MANUAL LCD-3

SCALEOMATIC®

© ERDE-Elektronik AB | 2011 LCD-3men.pdf 904036/110927

1 Introduction ......................... 6

2 Function ............................... 8

3 Connection ......................... 13

4 Programming & Trimming 17

5 Technical data ................... 24

6 Indicator Functions ........... 26

7 Communication prot. ........ 71

Appendix A - Profibus DP ........ 75

Appendix B - GSD-fil ................. 76

Appendix C - Modem ................ 77

Appendix D - Pulses ................ 78

Appendix Y - News ................... 79

Appendix Z - Parameters ......... 80

MANUAL

LCD-3 Weight Indicator/Controller

Ver. 4.12

LCD-3 Weight Indicator/Controller – Ver. 4.00men

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EG-DECL.CDR

EMC Directive 2004/108/EC

Vellinge December 2, 2009


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Content

Part 1 contents a brief description of the different instrument functions. Part 2 describes how the instrument/controller works and part 3 how it is connected. In part 4 it is descibed how to program and trim the indicator/controller. Technical data is found in part 5. Part 6 contains the different instrument functions. Appendix A & B belongs to the description of the Profibus-DP interface and Appendix C describes the modem communication. In Appendix Y the news in the different program versions are described. Forms to note actual settings can be found in Appendix Z.

1 Introduction ......................... 6

2 Function ............................... 8 2.1 Panel ...................................................... 8 2.2 Panel functions .................................... 9

2.2.1 Zero setting weight ............................. 9 2.2.2 Alternate between GROSS & NET ..... 9 2.2.3 TARE weight ....................................... 9 2.2.4 Show TARE weight ............................. 9 2.2.5 Manual TARE weight .......................... 9 2.2.6 TARE register ..................................... 9 2.2.7 Setting values ..................................... 9 2.2.8 Show register ...................................... 9 2.2.9 Resetting sequence ............................ 9 2.2.10 Resetting alarm ............................... 9 2.2.11 Return to SETUP ............................ 9 2.2.12 Date and time .................................. 9

2.3 Display ................................................... 9 2.3.1 Weight ................................................. 9 2.3.2 Texts ................................................... 9

2.4 Setting parameters ............................... 9 2.5 Setting values ..................................... 10 2.6 Show register ..................................... 10 2.7 Operators Menu .................................. 10

2.7.1 Clock ('clock') .................................... 10 2.7.2 'SEtUP' .............................................. 10 2.7.3 'InPut' ................................................ 11 2.7.4 'LC-InS' ............................................. 11

2.8 Product register ................................. 11 2.9 Counting scale function .................... 12 2.10 Startup ................................................. 12

3 Connection ......................... 13 3.1 Power Supply...................................... 13 3.2 Shielded .............................................. 13 3.3 LOADCELL-connector ....................... 13 3.4 Cable placement ................................. 14 3.5 Mounting ............................................. 14 3.6 Sensitivity ........................................... 15 3.7 OPTO-isolated interface .................... 15 3.8 Loadcell simulator ............................. 15 3.9 Printer .................................................. 15 3.10 Computer ............................................ 16 3.11 Expansion board ................................ 16

3.11.1 Connection of I/O .......................... 16 3.11.2 Connection of analog utput ........... 16 3.11.3 Connection of Profibus DP ............ 16

3.12 Remote display RD650 ...................... 16

4 Programming & Trimming 17 4.1 Instrument func. ('ISEtUP') ................ 17 4.2 Programming ('SEtUP') ...................... 17

4.2.1 Displaying loadcell signal ................. 17 4.2.2 Scale parameters ('SCALE') ............. 17 4.2.3 Analog output ('AnALOG') ................ 18

4.2.4 Trimming ('trim') ............................... 18 4.2.5 Zero trimming ................................... 19 4.2.6 Sensitivity trimming .......................... 19 4.2.7 Clock ('clock') ................................... 20 4.2.8 Cmmunication ('CSEtUP') ................ 20 4.2.9 ANYBUS interface ('AnYbUS') ......... 22

4.3 Program setup ('PSEtUP') ................. 22 4.3.1 Test ('tESt') ...................................... 22 4.3.2 Testing inputs & outputs .................. 22 4.3.3 Test of COM1 ('Com 1') ................... 22 4.3.4 Test of COM2 ('Com 2') ................... 23 4.3.5 Test of COM3 ('Com 3') ................... 23 4.3.6 Fine trim analog output ('AnALOG') . 23

4.4 Test of EEPROM ('EEtESt') ............... 23 4.4.1 Save a copia of settings ................... 23 4.4.2 Demonstration ('dEmo') ................... 23 4.4.3 End ................................................... 23

4.5 Serial number ..................................... 23 4.6 Printout ............................................... 23

5 Technical data ................... 24 5.1 Signal conversion .............................. 24 5.2 OPTO-isol. inputs (2 st) .................... 24 5.3 OPTO-isol. trans.outp. (4 st) ............. 24 5.4 Communication ................................. 24 5.5 Power supply ..................................... 24 5.6 EMC ..................................................... 24 5.7 Case .................................................... 24 5.8 Environment ....................................... 24 5.9 OPTO-isol. inputs (2 st) .................... 24 5.10 OPTO-isol. trans.outp. (4 st) ............. 24 5.11 Analog output .................................... 24 5.12 Profibus interface .............................. 24

6 Indicator Functions ........... 26 6.1 Set Point Function (IF1) .................... 27

6.1.1 Connection ....................................... 27 6.1.2 Programmable outputs .................... 27 6.1.3 Programming of inputs ..................... 28 6.1.4 Setting of setpoints/outputs ............. 28 6.1.5 Peak value ....................................... 28 6.1.6 Counting scale ................................. 28

6.2 Filling outputs (IF2) ........................... 31 6.2.1 Connection ....................................... 31 6.2.2 Programming ................................... 31 6.2.3 Programming of inputs ..................... 32 6.2.4 Settings ............................................ 34

6.3 Automatic filling (IF3) ........................ 35 6.3.1 Connection ....................................... 35 6.3.2 Summation registers ........................ 35 6.3.3 Total registers .................................. 36 6.3.4 Program parameters ........................ 36 6.3.5 Setting of batch etc. & print .............. 39 6.3.6 Start ................................................. 40 6.3.7 Program sequence ........................... 40


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6.3.8 Displaying result registers ................ 40 6.3.9 Printing .............................................. 40 6.3.10 Preset number of batches ............. 41 6.3.11 Resetting program ........................ 41 6.3.12 Time out ........................................ 41 6.3.13 Condition ....................................... 41 6.3.14 Computer communication ............. 41 6.3.15 Continuous flow weighing ............. 42 6.3.16 Continuos mean value calculation 42 6.3.17 Fast selection product/batch ......... 42 6.3.18 Accumulating belt .......................... 42 6.3.19 Start signal length ......................... 42 6.3.20 Accumulated weighing .................. 43

6.4 Inverted filling (IF4) ............................ 44 6.4.1 Connection ........................................ 45 6.4.2 Summation registers ......................... 45 6.4.3 Total registers ................................... 45 6.4.4 Program parameters ......................... 45 6.4.5 Setting of batch etc. & print .............. 46 6.4.6 Start .................................................. 48 6.4.7 Program sequence ........................... 48 6.4.8 Displaying result registers ................ 48 6.4.9 Printing .............................................. 48 6.4.10 Preset number of batches ............. 49 6.4.11 Resetting program ........................ 49 6.4.12 Time out ........................................ 49 6.4.13 Condition ....................................... 49 6.4.14 Computer communication ............. 49 6.4.15 Continuous flow weighing ............. 50 6.4.16 Continuos mean value calculation 50 6.4.17 Fast selection product/batch ......... 50 6.4.18 Accumulating belt .......................... 50 6.4.19 Start signal length ......................... 50 6.4.20 Batch ready ................................... 51

6.5 Dosing 4 products (IF5) ..................... 52 6.5.1 Connection ........................................ 52 6.5.2 Summation registers ......................... 52 6.5.3 Total registers ................................... 52 6.5.4 Program parameters ......................... 52 6.5.5 Settings ............................................. 53 6.5.6 Start .................................................. 54 6.5.7 Program sequence ........................... 54 6.5.8 Displaying result registers ................ 54 6.5.9 Printing .............................................. 56 6.5.10 Preset number of batches ............. 56 6.5.11 Resetting program ........................ 56 6.5.12 Time out ........................................ 56 6.5.13 Condition ....................................... 56 6.5.14 Continuos mean value calculation 56

6.6 Dosing/Mixing 2 prod. (IF6) ............... 57 6.7 Dosing/Mixing 6 prod. (IF7) ............... 58 6.11 Automatic batching/sub batching (IF11) 59 6.41 Autom. hopper scale (IF41) ............... 61 6.42 Aut. Subbatch filling (IF42) ................ 62 6.51 Conveyor Scale (IF51) ........................ 63

6.51.1 Connection .................................... 64 6.51.2 Summation register ....................... 64 6.51.3 Settings in SETUP ........................ 64 6.51.4 Program parameters ..................... 64 6.51.5 Batch weighing/measuring ............ 65 6.51.6 Operators menu ............................ 65 6.51.7 Start/Tareing ................................. 66

6.51.8 Program sequence ....................... 66 6.51.9 Displaying result registers ............ 66 6.51.10 Printing ......................................... 66 6.51.11 Preset Sum weight ....................... 66 6.51.12 Reseting program ......................... 67 6.51.13 Data .............................................. 67 6.51.14 Communication ............................ 67 6.51.15 Dynamic trimming factor .............. 68 6.51.16 Panel functions ............................. 68 6.51.17 Extens. of service menu ............... 68 6.51.18 Sum pulse output ......................... 68

6.61 Axel weighing scale (IF61) ................ 69 6.62 Grain dryer program (IF62) ............... 70

7 Communication prot. ........ 71 7.1 General protocol ................................ 71

7.1.1 Connection control (ENQ) ................ 71 7.1.2 IN-signals (IN) .................................. 71 7.1.3 Panel Keys (PK) ............................... 71 7.1.4 Date and time ................................... 72 7.1.5 Product Register (PR) ...................... 72 7.1.6 Set Registers (SR) ........................... 72 7.1.7 Result Registers (RR) ...................... 72 7.1.8 Send. weight & status (SEND) ......... 72 7.1.9 Automatic send (AUTO) .................. 73 7.1.10 Register description ..................... 73 7.1.11 Other 'Registers' ........................... 73 7.1.12 Multidrop ....................................... 73 7.1.13 Application examples ................... 74

7.2 Ext. sel. product register .................. 74

Appendix A - Profibus DP ........ 75

Appendix B - GSD-fil ................ 76

Appendix C - Modem ................ 77

Appendix D - Pulses ................ 78

Appendix Y - News ................... 79 News in version 2.01 ...................................... 79

New instrument function IF7 .......................... 79 Printout in instrument function IF31 ............... 79 New instrument function IF51 ........................ 79 Selection of kg or lb ....................................... 79 Copy of settings ............................................. 79 Automatic answering modem ........................ 79 Longer return time in OP-menu ..................... 79 Faster 'no motion' when unstable signal ........ 79 ID-number ...................................................... 79 Function of the PRINT button ........................ 79 External push buttons for batch weight.......... 79 Select batch size by start signal length ......... 79 Preset no of batches or weight ...................... 79 External setting of clock ................................. 79 Program version and serial number ............... 79

News in version 2.04 ...................................... 79 Ny instrument function IF61 ........................... 79 Accumulating conveyor in IF3 & IF4 .............. 79

News in version 2.05 ...................................... 80 New instrument function IF62 ........................ 80

News in version 3.0X ..................................... 80 New A/D-converter ......................................... 80

News in version 3.2X ..................................... 80 Changed denominations ................................ 80 Zero trim ......................................................... 80


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New printer ..................................................... 80 Changed IF1................................................... 80

News in version 3.4X ...................................... 80 Accumulated weighing .................................... 80 News in version 3.44 ...................................... 80 Remote large display ...................................... 80 New batch weight function in IF51 ................. 80

News in version 4.0X ...................................... 80 Weight pulses ................................................. 80

Appendix Z - Parameters .......... 81


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1 Introduction LCD-3 is a weight indicator/controller with many

program functions. The indicator is used for connection to resistive bridge coupled transducers and contains transducer excitation, low drift amplifier, programmable A/D-converter, 2 programmable OPTO-isolated inputs and 4 programmable OPTO-isolated outputs. All programming and trimming is made from the frontpanel of the indicator.

LCD-3 stores all parameters, trimming values, settings, batch weights etc. in EEPROM and data will remain unchanged even when power is off. The indicator also has a batteri powered clock and a batteri powered memory for storing of sumregisters etc.

LCD-3 uses short form help texts which can be programmed to show the texts on the digit display in swedish or english. Those help texts are used to make settings and readings of sum registers easier for the operator.

LCD-3 is powered by 24 VDC and is attended to be mounted in a shielded cabinet and is very suitable for connection to modern PLC-systems, process computers etc. The indicator has a fast (50 Hz) updating. Since the internal conversion rate is very fast (Internally 4 kHz) the indicator is very useful for very fast weighing like dosing scales, packaging machines, weigh tfillers, check weighers etc.

LCD-3 has 3 communication channels, 2 RS-232 and 1 RS-485. They are intended for computer connection (Normally RS-232 or RS-485) and printer connection (Normaly RS-232). There is program for connection to an answering modem for remote calling and reading of for example the weight. With RS-485 interface up to 32 indicators can be connected on the same tvisted pair wires. An unic address is then set for each indicator. Printouts can be made on a serial page printer or a serial roll printer. LCD-3 do not use any control signals for the serial outputs. Only one channel can be active at the same time.

The following programs are available as standard:

IF 1 Indicator with 4 setpoints. Gross, net and peak value displaying. Counting scale.

IF 2 Indicator with 4 outputs for high speed feeding, low speedfeeding, tolerance error and empty indication. Setting is made by batch weight. High speed feeding cutoff, inflight material and tolerance 'follows' the batch weight.

IF 3 Automatic filling indicator with complete program sequence and 4 outputs for high speed feeding, low speed feeding, alarm and emptying. Settings can be made of

batch weight, high speed feeding cutoff, inflight material, tolerance limit, emptying limts etc.

IF 4 Automatic 'negative weighing type' filling indicator with complete program sequence and 4 outputs for high speedfeeding/ready, low speed feeding, alarmand refilling. Settings can be made of batch weight, high speed feeding cutoff, inflight material, tolerance limit, empty limits, refill limits etc. A container, tank, silo etc. is first filled with material. Then weighing is made by 'negative weighing' (Output of material from the container etc.) with high speed feeding and low speed feeding, tolerance control and automatic refilling of container etc.

IF 5 Dosing indicator for 4 products with one feeding speed. Automatic dosing of 1-4 products with tareing between each product.

IF 6 Dosing indicator for 2 products with one feeding speed. Automatic dosing of 1-2 products with tareing between each product. A mixing time can also be set.

IF 7 Dosing indicator for 6 products with two feeding speeds. Automatic dosing of 1-6 products with tareing between each product. A mixing time can also be set. Binary output for PLC etc.

IF11 For this indicator function one input is used for toggling between IF 3 och IF 42. Used when the same machine is used both for filling for example bags (1 batch/bag) and big bags (Several batches/bag).

IF 31 Check weighing program. Checks the weight and rejects products with incorrect weight. Sum registers for no of approved products, rejected products etc. Used for example together with a weighed belt conveyor or a weighed roll conveyor for dynamic weighing or for example a platform scale for static weighing.

IF 41 Program for automatic hopper scale.This function is used for a scale that divides a continuos material flow into small batches and adding up all batches for the total sum of material. For each batch both the gross and tare weight are registered.

IF 42 Program for automatic filling to a preset weight by dividing the weighing into several high speed filled smaller batches. The final batch is filled by two speed feeding.

IF 51 The indicator is used for a belt conveyor scale, with adding weight and indication of capacity. The complete conveyor can be weighed or only one or more conveyor belt rolls. The function requires a pulse trans-ducer for measuring of the conveyor belt speed.


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IF 61 Program for an automatic truck axle weighing scale. Automatic registration of axle weights and outputs for traffic lights.

IF 62 Program for controlof an grain dryer.

IF 81 Special program.

See part 6 for more descriptions of the indicator functions.


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2 Function Detta avsnitt behandlar: Panel Panelfunktioner Display Parameterinställning Inmatning av värden Visning av register Räknevågsfunktion Tararegister Uppstart

2.1 Panel LCD-3 has a sealed front panel with a 6-digit

display, 8 LED-s (Light Emitting Diodes) for indication and 6 switches. The figures refere to ill. 2.1.

1 LED indication for signal outputs 0-3. Illuminate when the output is ON (OUT0 - OUT3).

2 LED indication for stable weight. Off whenweight is not stable (Motion).

3 LED indication for zero set instrument.

Illuminates when the weight is within ±1/4

division (d).

4 Zero setting switch. Zero sets weight and set value at parameter and weight settings. Also used to zero set summary register. In text named '0'.

5 Gross-Net switch. Display alternates between gross weight and net weight. In text named 'GN'.

6 Tare. To tare weight. In text named 'TARE'.

7 Print switch. See instrument function in question. In text named 'PRINT'.

8 Function switch, enter and leave setting and to step left. Also used as a function switch in combination with other switch. In text named ‘F’ or ''.

9 Step forward switch or increase value by (up). Used to steparound among the settings and to increase the value by 1 when setting parameters or values. In text ’’ or ''.

10 LED indication of gross or net. Indicates weight displayed. Both LED-s are off when displaying tare weight.

11 Weight display. 6-digit display to show weight in kg or lb (-99999 to 999999), settings, summary register etc and texts. Left figure alsoused by the program for certain instrument programs.

12 SETUP has been activated when the decimal point illuminates onthe left digit of the display and return to SETUP can be achieved without restart. (SETUP = setting of instrument parameters)

NOTE! All LED-s illuminate in the SETUP function.

The switches may have a double function. In that case, switch 'F' must be depressed at the same time as the other switch. In the text this is shown as, for instance, 'F'+'0' which means that the 'F' switch is being depressed first and while still depressing 'F' also depressing the '0' switch.

Picture 2. 1


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When setting a register or showing a register on the display, the display automatically returns to normal weight display after 20 seconds respectively 5 seconds after the last switch is depressed.

2.2 Panel functions Certain program functions are common for all

instrument functions (IF), while certain are special. Therefore also check the instructions for the actual instrument function. The common panel functions are described below.

2.2.1 Zero setting weight Depress ‘0’ to zero set weight. Functions only if

the weight is within -1% to +3% of the measuring range refering to the calibrated zero setting weight (CAL0).

2.2.2 Alternate between GROSS & NET

Depress ‘GN’ to alternate between GROSS and NET weight display.

2.2.3 TARE weight Depress ‘TARE’. The GROSS weight must be

positive to obtain TARE. The display now show NET weight.

2.2.4 Show TARE weight Depress ‘F’+’GN’ to show stored TARE weight.

Both LED-s GN go off while showing TARE weight.

2.2.5 Manual TARE weight The TARE weight is shown by depressing

‘F’+’TARE’. It can be altered or set to zero according to “setting values”.

The display automatically returns to weight display after 20 seconds.

2.2.6 TARE register LCD-3 also has a tare register with 9 tare

weights (1-9) which can be selected from the panel. The tare weight is shown by depressing ’F’+’TARE’. Step between tare register by using ‘’. Zero set by ‘0’ and change by using function ”setting values”. By depressing ‘TARE’ when showing a tare register, it is copied to the tare weight and used to calculate the net weight.

The display automatically returns to weight 20 seconds after previous switch depression.

2.2.7 Setting values Depress ‘F’+‘’ to the operators menu where the

settings for the instrument function in question. Step by using ‘’. Use function “setting values” to change.


2.2.8 Show register Depress ‘’ to show register values depending

on instrument function selected. Use ‘’ to step between the values. Zero set by depressing ‘0’.


2.2.9 Resetting sequence Certain instrument functions (IF) has a program

sequence. It can be manually reset by depressing ‘F’+’0’.

2.2.10 Resetting alarm Alarm/Fault signal can be manually reset by

depressing ‘RESET’. (‘0’).

2.2.11 Return to SETUP The decimal point on the left digit display

illuminates if SETUP was selected in connection with start and then ended. It is then possible to return to SETUP bye the 'OPerators Selection menu' (See 2.7) without restarting the instrument.

2.2.12 Date and time Date and time can be set from the panel by

selecting “Clock” in operators menu.

2.3 Display

2.3.1 Weight The weight value is presented in kg or lb on a 6-

digit 7-segment display with optional location of the decimal point.

Negative weight is shown with a minus sign to the left on the display.

Overload (Weight>maximum weight+9d) is indicated by a flashing display.

Underload is indicated by a flashing display and a minus sign. If bipolar range is not selected, underload = Weight<-1% of the measuring range. If bipolar range is selected, underload = weight<maximum weight+9d.

2.3.2 Texts LCD-3 can show short form texts to facilitate the

operators job. The texts are generated using the 7-segment digits of the display. They can only show simple messages and require a certain degree of operator fantasy.

2.4 Setting parameters At parameter settings there is normally shown a

1-3 character text on the left side of the display. Select setting by depressing ''. Then use '' (Increase) until desired value is reached. '+' and '-' can also be used. Depressing '' for more than one second makes the display automatically


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increase rapidly as long as the '' is being depressed.

Depressing ‘0’ sets the display to zero or lowest value possible. After stepping to the highest value, the display starts over from the lowest value. End setting by depressing '' again.

2.5 Setting values Use this function to set a value. A text is

normally shown for a second to show what value will be displayed then the value is displayed. For small adjustments it is possible to decrease and increase the value by depressing G/N (-) or TARE (+). Depressing of 0 sets the display to zero or lowest value possible.

For larger adjustments start setting by depressing ''. The first digit is flashing. Then set the value digit by digit by stepping with ''. The digit flashing can be increased by using ''. The buttons marked ‘+’ and ‘-‘ can also be used to increase/decrease the flashing digit. Depressing ‘0’ sets the actual digit to zero. Step through all digits until all have been set and no digit is flashing.

When changing a value the display automatically returns to show the weight 20 seconds after last switch depression.

2.6 Show register Showing the registers are made by pressing on

''. First a text is shown for a seconds and then the value. Use'' to step between the registers. Some values can be reset by pressing on '0' when the value is show.


2.7 Operators Menu To set values needed for the normal function,

start printouts etc. there is a 'Operators Selections Menu' ('OP-SEL'). First press F+'' to step to the menu. Then step with '' to required group. Then select group with '' and then step to the value to be changed by pressing ''. See picture 2.3. Note that available groups and values in the menu depends on application (IF). Picture 2. 3 – Operators Selection Menu

The display automatically returns to weight display after 30 seconds or after '0' has been pressed when a menu selection is shown on the display.

To avoid unintensional change of certain values, it is possible in some instrument functions to make it more difficult to select thoose groups. By setting P25=1 the '' has to be pressed for 8 s to select thoose groups.

2.7.1 Clock ('clock') Ajusting the time and date of the battery

operated clock. Year, month and day plus hour and minute can be set. While setting, the right decimal point is flashing with 1 Hz (1 time/s) if the clock is 'running'.

Select by pressing '' when 'clock' is shown on the display.

'yy' Setting of year. (0 - 99)

'mo' Setting of month. (1 - 12)

'dd' Setting of day. (1 - 31)

'hh' Setting of hour. (0 - 23)

'mi' Setting of minutes. (0 - 59)

The clock can also be adjusted in SETUP.

2.7.2 'SEtUP' When the left decimal point is ON the selections

in the menu is extended (See picture 2.4)

Picture 2. 2 - Setting


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SETUP Go back to SETUP.

Service:

runtim Total run time for LCD-3 in hours.

Out0 t Total ON time for output in hours.




Ct ms:

Ct X Only for manufactures use. Picture 2. 4 – Extended selections

2.7.3 'InPut' The status of the external inputs can be

checked by selecting ‘InPut’. Then the status of IN0 - IN3 are shown as 'InXXXX' where X=1 if there is a signal and X=0 if there is no signal.

Go back to the menu with ''.

2.7.4 'LC-InS' The loadcell input signal can be monitored by

selecting 'LC-InS'.

Then the signal in mV/V i shown on the display. By pressing on '0' the display can be set to zero for monitoring changes in loadcell input signal.

From version 3.22 you can, by setting prmP[37]>0, trim the zero if the weight is within prmP[37]% of the range. Press ’F’+’0’ to trim.

Go back to the menu with ''.

2.8 Product register In the instrument there are for some IF:s (IF2,

IF2, IF4, IF11, IF31, and IF42) a possibility to use one of two types of product register.

In type 1 only one value/product is stored. For example a batch weight. För some IF:s also a second value can be stored. For example sub batch weight.

In type 2 all settings are stored including ‘high speed feeding’, ‘in flight material’, ‘tolerance’ etc.

The product registers are activated in ISETUP by setting parameter ‘EPr’ to 1 or 2 (Default 0). The number of products to be set can be selected by parameter ‘noP’ (Default 10). All product data can be set to zero by pressing on ‘0’ for 3 s when ‘noP’ is shown.

To save a product in product register you select 'Prodre' in Operators Selection Menu by pressing '' (If P25=1 it must be pressed for 8 s). Stepping forward in the product register is made by '' or ’+’ (G/N) and backward with ‘-‘ (TARE). First the product number is shown and then the precently stored value (F. ex. batch weight). You save the product data by pressing '' on decired product number. To return without saving press on ‘0’.

To fetch a product from product register you select 'bAtch' in Operators Selection Menu by pressing ''. You step thrue the product numbers until you reach the reqested number. You fetch the product data by pressing ''. To return without fetching a new batch weight press on ‘0’.

Manual change of batch weight from panel sets last selected product no to 0.

Decired product can also be selected by the ’Fast selection of product/batch’ function. See respectively instrument fuction.

The batch weight can also be fetched by external signal on COM1 from an computer or for example a barcode pen. The program is made for pen type HP HBSW-8X00.

The codes should be P01-P99 followed by CR+LF in the end. P is programmed as start character S1 and CR+LF as end characters E1 and E2. All other characters set to 0. COM1 i programmed fo 9600 baud, 8 bits and no parity.


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2.9 Counting scale function If the parameter ’ECS’=1 the counting scale

function can be enabled in IF1.

LCD-3 then shows no of pcs instead of weight. This is indicated with a decimal point to the right of the display. Counting is set ON and OFF is made by pressing ’F’ for 3 s. Counting scal funcion only works in IF1.

The function is:

At first the weight/pcs must be calculated or manually set. This is made by putting a number of products on the scale and pressing F+''. 'no Pcs' is shown on the display. Set the number of products put on the scale.

Press '' and 'w/pcs' (Weight/Pcs) is shown. To set he weight/pcs manually press ''.

Press '' and 'SAVE' is shown on the display. Press '' to get the weight from the scale and calculate a new weight/pcs. Otherwise press ''.

The scale now operates as an counting scale.

2.10 Startup When power is connected, a starting procedure

is begun with a test of all LED-s and digit segments. The instrument setting ISEtUP is initiated by depressing ‘0’+’F’+'' while the test is performed. The parameter setting and calibration (SEtUP) is initiated by depressing only F’’+'' while the test is performed.

After test, the serial number is shown on the display followed by the program version, for instance P 3.01 (for version 3.01). Then the parameter change counter (Pc=0-255) is shown, increased with 1 each time a change has been made in a parameter in SETUP. Can be used to check if someone has made a change. Finally the set instrument function is shown, for instance ‘IF 1’. Then the instrument is ready for use.

The instrument can not function correctly if there is a parameter error. Then it will start after resetting ISEtUP and SEtUP to default. If the instrument does not start at all, depress ‘TARE’+’F’+ '' while turning the power on. Then default parameter values are set for all parameters, calibration, settings etc.


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3 Connection This section describes: Connectors Power supply Shielding Cable placement Mounting Sensitivity OPTO-isolated interface Loadcell simulator Printer Computer Expansion board

All connections of the LCD-3 is made by connectors type D-SUB on the rear panel of the instrument:

LOADCELL Connection of loadcell. 9-p female

COMMUNICATION Connection of communica-15-p male tion RS-232/-RS-485 and eventually the power supply

I/O & POWER Connection af power supply 15-p female

Shielded connector houses must be used for all cables.

3.1 Power Supply The LCD-3 is powered by DC power 18-30 VDC

thrue one of the connecters I/O & POWER or COMMUNICATION. The maximum allowed power supply ripple is 3 Vp-p and the voltage may not, including the ripple, be lower than 18 VDC and not higher 30 VDC. When no loadcells are connected the instrument power consumtion will be max 9 W and by full load on the loadcell excitation, there will be an additional 3 W. If expansion card with bus interface is installed, there will also be an additional 3 W.

The power supply should be connected thrue a 1 AS (Slow) fuse (Pin 1 or 2).

NOTE! All connectors (LOADCELL, COM-MUNICATION and I/O & POWER) must be connected before power is turned on.

3.2 Shielded Shielded (Screened) cables must be used for

the loadcell (LOADCELL), communication (COM-MUNICATION) and also for the in- and outputs (I/O & POWER). All screens must be connected to the connector houses for good screening. Skarvning of loadcell cable or parallell connection of several loadcells must be done in shielded boxes (Ex. CB-4TB) with grounded cable metal

glands connecting the screen for 360°. Preferable special 'EMC glands' should be used.

The instrument chassie must be grounded thrue the flat pin connector on the rear panel (Min 1.5 mm2). To ground the cable screens they must be connected thrue screened connector houses.

3.3 LOADCELL-connector Here the loadcell/loadcells are connected.

Make sure that the power is off when the connection is made. Since the cable to the loadcells has a resistance there will be a voltage drop in the excitation wires depending of the wire resistance and the number of loadcells connected (U=I*R). This resistance will change on cable

Picture 3.1 - Connections Picture 3.2 – 6-wire connection


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(Cupper wires) temperature. This produces a incorrect and varying loadcell excitation for the loadcells, which will decrease the accuracy. Consequently '6-wire connection' should be used.

This connection (Picture 3.2) means that 6 wires are used and the excitation voltage is measured on the loadcells with 'sense' wires (+sense & -sense). The LCD-3 then measures the actual excitation on the loadcell and compensates for the voltage drop. Max voltage drop is 0.5 V for each excitation wire (+Excitation & -Excitation). The cable (Wire) area must me selected according to that. Eventually a parallell coupling of wires can be made to lower the voltage drop.

For example an installation with 4 loadcells with 350 ohm resistance each and 100 m cable length, the minimum required cable (Wire) area is 0.5 mm

² (If cupper wires are used). The voltage drop will

then be about 0.4 V on a 20 ºC cable

temperature.

Picture 3.3 – Connection box

If several loadcells are to be used the '6-wire connection' can only be used to the connection box (Picture 3.3). The '4-wire connection' must then be used for each loadcell even if they are supplied with 6 wires. Then both +excitation/+sense and -exitation/-sense should be connected in parallell, which also make the voltage drop only half the normal. Then those cables should be as short as possible to avoid voltage drop which will decrease the accuracy. Normal cable length of a few meter do not cause any problems. Problems will come with longer cables and large temperature changes for the cables. For example when mounted outdoors on a south side of a bouilding where temperatures can

be 100 ºC higher a warm summer day than the temperature a cold winter night.

Note that if only '4-wire connection' is used for loadcell connection to the LCD-3, the signals +excitation and +sense (Pin 1-2) must be connected together like -excitation and -sense (Pin 5-6), see picture 3.4.

3.4 Cable placement Since the signal from the loadcell is very low,

normally about 2 µV when a resolution 1/10000 if the 0-25 mV range is used, the loadcell cable must be placed with care. Avoid to put high power cables in parallell with the loadcell cable. If possible the loadcell cable should be placed 20 cm från high power cables. The longer cable the more important for a good placement of the cable.

In an industrial environment it can sometimes be difficult to place the cables separated from the cables that can produce disturbances. Then a cable with double screens or placing the cable in well grounded steel pipes be suitable for the loadcell cable.

Cables that can produce disturbances (For example motor cables) should be screened if possible.

3.5 Mounting The LCD-3 should not be placed together with

equipment producing a high level of disturbances like motor contactors, motor controllers etc. Those disturbance sources should, if possible, be mounted in separate cabinets or separeted with well grounded metal plates.

By planning the placement of cables and placing the cables correctly to avoid disturbances, the chance for a succesful installation is increased. The LCD-3 is a precision measuring device and must be threated like one to be able to operate correctly.

Bild 3.4 – 4-ledarkoppling

Mounting of the LCD-3 is made by first demoun-ting the fastening screws on both sides. Mount the rubber gasket if not already in place. Slide the instrument into a rectangular hole in the fron panel of for example a cabinet. Remount the fastening


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Picture 3.6 - Programming

screws and tighten them gently. Do not tighten the screws more than nessecary. If tightened to hard the plastic cover can crack. The instrument is demounted with an opposit operation.

When mounted where vibrations can be foreseen, for example on a mobile installation, the instrument must be stabilised by also using the rear fastening point (M4).

3.6 Sensitivity The LCD-3 has 3 sensitivity ranges, 0 - 1.25

mV/V, 0 - 2.5 mV/V and 0 - 5.0 mV/V. Most loadcells has an output of 2 mV/V with a certain tolerance. Therefore the LCD-3 is on delivery set for the 0 - 2.5 mV/V insignal range.

Picture 3.5 - Placing of jumpers

Some loadcell types do however have a higher output of for example 3 mV/V or even up to 4 mV/V and then a larger insignal range is needed (5.0 mV/V). If a loadcell with lower output as for example 1 mV/V is used or only a small part of the total loadcell capacity is used, a lower output will be obtained and then a lower insignal range is needed (0-1.25 mV/V). Do however note that if a lower range is used the amplifying is

increas-ed. Also the

amplifying of disturbances are then increased. Therefore make sure that you do not get a too low output by selecting a suitable loadcell capacity.

The sensitivity (Amplifying) is programmed by jumpers on the printed circuit board. The board is reached by removing the 4 screws on the rear panel and then gently sliding out the board. The jumpers JP1 and JP2 are located near by the connector LOADCELL according to picture 3.5. Change the jumpers accordingly to picture 3.6 for desired sensitivity.

3.7 OPTO-isolated interface Connection of the OPTO-isolated inputs (2) and

the OPTO-isolated transistor outputs (4) are made on the connector marked I/O & POWER.

The OPTOisolated outputs needs a 1 AF (Fast) fuse (Pin 15). Max load/output is 0.1 A continuos and max 0.5 A during 50 ms.

If an inductive load is used a transient protection device, for example a diod, must be used on the load.

3.8 Loadcell simulator For testing of the LCD-3 without a loadcell

connected, a simple loadcell simulator can be used (See picture 3.7). The simulatorn should be mounted in a shielded box and connected by a shielded/screened cable and connector. Use resistors with low temperature drift, preferable wire wound 0.1% with 5 ppm temperature drift.

See also part 4.2.8 'Demonstration'.

Picture 3.7 – Loadtcell simulator

3.9 Printer Connection of the

printer Star SP-212/2320/712 is made accordingly to picture 3.8. Select printer 1 in SETUP part 4.2.5.5 'Pr SEt'. Use shielded cable and cable houses.

Picture 3.8 – Conn. of SP-XXXX


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3.10 Computer Connection of computer with a 9-pin connector on

the serial port. Pin numbers within () are used for a computer with a 25-pin connector. picture 3.9.

Picture 3.9 – Connection of computer

3.11 Expansion board On the expansion board there are 2 OPTO-

isolated inputs and 4 OPTO-isolated transistor outputs, expanding the LCD-3 I/O to 4 inputs and 8 outputs plus an analog output. The analog output can be programmed for 0-20 mA, 4-20 mA or 0-10 V. Output responses to 0 - n (Max no of counts). On the expansion board there is also a Profibus Dp intrface. There are 3 models of the expansion board. One with I/O plus the analog output, one with only Profibus DP interface and one with I/O, analog output and Profibus DP interface.

Bild 3.10 – Inkoppling expansionskort

The analoga output (0-20 mA alt. 4-20 mA) is always available on pin 2 and 9. Conversion to 0-10 V is best made by connecting a accurate 500 ohm resistor on the receiver signal input. The signal will then be a more interference resisting current signal to the receiver. A jumper between pins 13 & 14 also converts the signal to 0-10 V but is interference sensitive.

3.11.1 Connection of I/O Connection of the OPTO-isolated inputs (2) and

the OPTO-isolated transistor outputs (4) expanding LCD-3 output to 8 and inputs to 4. Connection are made on the connector marked I/O. All signals are avilable on the same pin number as for the main board. The OPTO-isolated outputs needs a 1 AF (Fast) fuse (Pin 15). Max load/output is 0.1 A continuos and max 0.5 A during 50 ms.

If an inductive load is used a transient protection diod must be connected.

3.11.2 Connection of analog utput The analog output (Current 0-20 mA & 4-20 mA)

is obtained on pins 2 and 9. The load must be 0 - 500 ohm.

By connecting pins 13 & 14 the signal is changed to a voltage signal 0-10 V. The output must not have a lower impedance than 1 Mohm.

3.11.3 Connection of Profibus DP The connection of Profibus DP is made on the 9

pin D-SUB connector marked 'EXP BUS'. The cable screen must be connected to the shielded house of the D-SUB connector.

Picture 3.11 – Connecting Profibus-DP

The first and last nod in the net must be terminated with a resistor. This is made by setting the swith 'T' in position 'ON'.

3.12 Remote display RD650

Picture 3.12 – Connection remote display RD650

Use a twisted pair shielded cable. Connect on COM3. Use default parameters except for ”COC” which is set to 3 (COM3) and ”Prc” which are set to 5 or 6 (See 4.2.8.4).


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4 Programming & Trimming This section describes: Selecting instrument function (ISETUP):

Instrument function Customer adapting

Language version Product register Programming the instrument (SETUP): Scale parameters Analog output Trimming (calibration) Setting clock Programming series channels/printer Hardware tests EEPROM test Demonstration functions Serial number Printing settings

Two steps are needed for the instrument program-ming. First step is to select instrument function, language version and possibly customer adaptation (ISETUP) and then the normal instrument programming (SETUP) and kg/lb.

Finally certain program functions must be pro-grammed, depending on selected instrument function (PSETUP). Default in setup is indicated with 'Def'.

Note the settings (Appendix Z) or make a print out.

Save the settings, trimming etc. by ending SETUP and by depressing 4 for 3 seconds.

Otherwise the new values will not be saved.

4.1 Instrument func. ('ISEtUP') Depress’0’+’F’+' before turning the power on

to go the instrument function settings. Release the switches when the display test (888888) is finished. The display shows ISEtUP when the power up sequence is ended. ISEtUP has following selections:

’IF’ Setting of instrument functions (See section 1). Def.=1.

’CF’ Customer special. ’CF’ is normally set to 0 except for customers with special programs .

’LA’ Language version. The short foms texts is shown on the display with englsh text.

0 = Swedish text. Def. 1 = English text.

‘EPr* Product register:

0 = Not connected. Def. 1 = Type 1 connected. 2 = Type 2 connected.

’noP’ Number of products in prodreg. Def.=10.

'ECS' Enable Counting Scale selection: 0 = Not selectable. Def. 1 = Selectable

'lb' Weight in kg or lb (Pound). 1 lb=0.4545 kg:

0 = Weight/Printout in kg (Def.) 1 = Weight/Printout in lb

Depress '‘ for 3 seconds to end the instrument function setup. Then SETUP begins (See 4.2). If the instrument functions have been changed, default values are set for certain function choices, depending on instrument function. This is indicated by showing dEF.

4.2 Programming ('SEtUP')

If not coming from ISETUP, then activate SETUP by depressing ‘F’+'' when turning on the power. Release the switches when the display test (888888) is finished. The display shows SEtUP followed by a value when the power up sequence is ended.

If in normal operation mode and the left dp on the display is on, SETUP can be selected by selecting SEtUP in OPerator Selection menu.

SETUP is divided in several section. Step bet-ween the sections by using '' and select desired section by ’’.

Following SETUP sections are available:

4.2.1 Displaying loadcell signal Displaying the input signal from the loadcells in

mV/V. Can be used to check the stability of the received signal and to trim 'corners', as the value has a high resolution. When 'GN' is depressed the display shows the output from the loadcells in mV.

By depressing F for 3 seconds, default values are set for certain function choices, depending on instrument function selected. This is indicated by showing dEF.

4.2.2 Scale parameters ('SCALE') Press ’’ when SCALE is shown on the display.

‘n’ Maximum number of divisions: 100-30000 d in steps of 100. The max capacity will be n * d. D=1000.

‘dp’ Programming decimal point. 0, 0.0, 0.00 or 0.000. D=0.

'd' Division. Count by 1, 2, 5, 10, 20 or 50. The instrument range (Max weight) is 'n' * 'd'. Def.=1.

'bi' Unipolar/Bipolar input range: 0 = Unipolar range 0 - +n. Def. 1 = Bipolärt mätområde -n - +n.

’It’ Integration time. Programming the A/D converters integration time. Integration time can be set from 20 ms to 1000 ms in 20 ms steps. Higher integration time provides a


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more stable but slower signal response. Def.=320.

’Eit’ Expanding of integration time. For applications with extrem unsteady weight like outdoor silos. The integr-ation time (‘it’) is multiplied with this factor (1-60). Weight comparison will be consequently slower. Def.=1.

’F’ Filter (0-15). Acts as an analog RC filter. 0 provides none and 15 maximum filter funtion. Def.=4

’Sd’ Tolerance for stable weight (0-9). 0 provides no tolerance and 9 means that the weight is considered stable if the change is maximum 9 d in ‘St’ time. Def.=0.

‘St’ The weight must be within ‘Sd’ during ‘St’ to be considered stable (0.0-9.9 seconds). Def.=0.5.

’Otr’ Automatic zero supressing (0-99). The display is set to zero if the weight is within ‘Otr’ units (d) and the weight is stable. The instrument then retains the zero setting and compen-sates for slow changes. 0 provides no zero supression. Functions only when the weight is within the zero setting range (-1% to +3%). Def.=1.

’Fct’ Flow calculating time. Def.=5.0.

‘PF’ Panel function (0-63). Selecting switches that the operator can use. The switches have value 1-32 as shown in picture. 4.1. Set the summary of the switches. Value 63 makes all switches activated. Def.=63.

4.2.3 Analog output ('AnALOG') If LCD-3 is equiped with expansion card with I/O

the analog signal can be enabled. 0-20 mA (4-20 mA) alt. 0-10 V) corresponds to 0-’Anlg’ number of counts (Max).

'Out' 0 = No analog output. Def. 1 = GROSS-weight. 2 = NET-weight. 3 = GROSS-weight inverted. 4 = NET-weight inverted.

5 = Capacity. 6 = Belt speed (IF31).

'OFF' 0 = No offset (0-20 mA/0-10 V). Def. 1 = Offset 4 mA (4-20 mA).

'Anlg' No of counts (´d´) corresponding to full output signal (100-32000). Def.=1000.

For fine trimming of output see part 4.2.8.5.

4.2.4 Trimming ('trim') First a short description of what ‘trimming’

means. To trim a measuring device means a procedure that makes the measuring device reading to be the same as the “correct” value.

Another name, which is sometimes wrongly used, for this procedure is calibration. Calibration is however something completely different. Calibration is measurements, made under given sircumstances, that decides the correlation between the measuring device “reading” and the corresponding “thrue” value.

A calibration does not mean that a measuring device fullfills its specification, but the ”calibration reposrt’ (Protocol) contains important information to correct your measurements.

Earlier versions of LCD-3 has used the name calibration instead of trimming. AD0-AD2 has now been replaced by Ins0-InS2 (InS=InSignal) and CAL0-CAL2 with trP0-trP2 (trP=trimPoint).

Verification is an investigation, showing if specified demands are fullfilled.

Legal verification means that the measuring device is investigated and approved by the proper government authority. Whithin “legal metrology” the term verification is used for official approval for certain use. LCD-3 is not approved for ’legal weighing’.

For a scale, trimming means that you ”tare” (Deduct) the empty weight signal so the result is 0 when there is no load on the scale and sets the sensitivity so when there is a load on the scale, the measuring result corresponds to the load. LCD-3 has 2 sensitivity trimpoints enabling the possibility to to linearise the loadcell input signal. A trimpoint contains of a trim weight (trw) and a insignal value (InS) from the loadcells.

The trimming itself is made electronically and the user only has to make sure the scale is empty when zerotrimming and that the scale is loaded with required load when sensitivity trimming.

The trimming values can also be set manually if they are known. For example when replacing an instrument, the old values can be set.

For LCD-3 trimming is selected by pressing on ’’ when ’trim’ is shown on the display.

When the scale is trimmed the values must ne stored by ending SETUP with pressing on '' for 3 s. The display returns to normal.

Picture 4.1 . Front panel


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4.2.5 Zero trimming See also 2.7.4.

Trimming of ”empty scale” = zero setting can be made in two ways. Automatically by reading the loadcell signal when the scale is empty and store it as ‘InS0’ in trimpoint 0 (‘trP0’) or by entering the zero signal value ‘InS0’ manually. The later can for example be used when replacing an instrument and the values are already known.


4.2.5.1 Automatic zero trim Automatic trim of zero (’trP0’) is selected by

pressing '' when 'trP0' is shown on the display. An zero trim weight do not need to be set since it is always 0.

First the old saved loadcell signal in mV/V is displayed for 1 s and then the present loadcell signal.

Make sure the scale is empty.

When the loadcell signal is steady, press ’’. Now 100 measurings are made and the mean value is calculated and used as the new insignal value ’InS0’. '-InS0-' is shown on the display when the measurings are in progress. Trimming ends with the new insignal value ’InS0’ is shown on the display for 1 s.

Note the value in Appendix Z.

4.2.5.2 Manuell zero trim The zero insignal value ’InS0’ can also be

entered manually. Manual entering is selected by pressing '' when 'trP0' is shown on the displayen.

First the old saved loadcell signal in mV/V is displayed for 1 s and then the present loadcell signal.

To enter the zero trim insignal ’InS0’, press ‘TARE’ and enter the new value digit by digit with ’’ or ’+’ and ’-’. When the new insignal value has been entered and no digit is flashing, trimming is ended by pressing on ’’.


If you do not wish to continue with sensitivity trimming, press on ’’ to step further.

4.2.6 Sensitivity trimming Trimming of sensitivity can be made in two

ways. Automatically by reading the loadcell signal (‘InS1’ and ‘InS2’) when the scale is loaded with a known load or by entering the insignal values ‘InS1’ and ‘InS2’ manually. The later can for example be used when replacing an instrument and the values are already known.


The sensitivity trim weight should be near the maximum load or near the weight that are normally used.

Picture 4.2 – Linearising

LCD-3 has 2 sensitivity trimpoints enabling the possibility to to linearise the loadcell input signal. A trimpoint contains of a trim weight (trw) and a insignal value (InS) from the loadcells. See picture 4.2. There is normally no need to use more than 1 trimpoint.

If 2 sensitivity trimpoints are used you then position the lowest trimpoint (‘trP1’) in the middle of the range and the highest (‘trP2’) near the maximum load.

The second trimpoint ’trP2’ must be greater than the first ’trP1’ and the trim weight ’trW2’ must be set to 0, if not used.


4.2.6.1 Automatic sensitivity trim Automatic trim of sensitivity (’trP1’) is selected

by pressing '' when 'trP1' is shown on the display.

To enter the trim weight 1 (’trW1’), press '' and enter the new value digit by digit with ’’ or ’+’ and ’-’. When the trim weight has been entered and no digit is flashing, setting is ended by pressing on ’’.


First the old saved loadcell signal in mV/V is displayed for 1 s and then the present loadcell signal. The value is the loadcell insignal–‘InS0’.

Load the scale with the entered weight.

When the loadcell signal is steady, press ’’. (Press ’’ to end without trimming). Now 100 measurings are made and the mean value is calculated and used as the new insignal value ’InS1’. '-InS1-' is shown on the display when the measurings are in progress. Trimming ends with the new insignal value ’InS1’ is shown on the display for 1 s.



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If you do not wish to continue with sensitivity trimpoint 2, press on ’’ to step further. Make sure ‘trW2’ is 0.

Automatic trim of sensitivity (’trP2’) is selected by pressing '' when 'trP2' is shown on the display.

To enter the trim weight 2 (’trW2’), press '' and enter the new value digit by digit with ’’ or ’+’ and ’-’. When the trim weight has been entered and no digit is flashing, setting is ended by pressing on ’’.



Load the scale with the entered weight.

When the loadcell signal is steady, press ’’. (Press ’’ to end without trimming). Now 100 measurings are made and the mean value is calculated and used as the new insignal value ’InS2’. '-InS2-' is shown on the display when the measurings are in progress. Trimming ends with the new insignal value ’InS2’ is shown on the display for 1 s.


4.2.6.2 Manual sensitivity trim Manual trim (Theoretical trim) can be used if it

is not possible to load the scale with a known load. The loadcell capacity and output must be known. Normally a calibration sheet is delivered together with the loadcell.

‘trW1’ = Total capacity of all loadcells

‘InS1’ = Mean value of the loadcell output signal

Only 1 trimpoint can be used. Set trim weight ’trW2’ to 0.

Example:

The scale has 3 loadcells with a capacity of 1000 kg each.

trW1 = 3 * 1000 kg => 3000 kg.

According to the attached calibration sheet the loadcell output is 2.0045 mV/V, 2.0032 mV/V and 1.9961 mV/V.

Mean value is (2.0045+2.0032+1.9961)/3 => 2.001267 mV/V.

trW1 : 3000 kg

InS1 : 2.001267 mV/V

Note the values in Appendix Z.

Manual trim of sensitivity (’trP1’) is selected by pressing '' when 'trP1' is shown on the display.

To enter the trim weight 1 (’trW1’), press '' and enter the new value 3000 digit by digit with ’’ or ’+’ and ’-’. When the trim weight has been entered and no digit is flashing, setting is ended by pressing on ’’.


To manually enter the calculated insignal value 1 (’InS1’), press on ‘TARE’ (Text ‘MAN’ below button) and enter the new value digit by digit with ’’ or ’+’ and ’-’. When the calculated insignal value has been entered and no digit is flashing, setting is ended by pressing on ’’.

When the scale is manually trimmed the values must be stored by ending SETUP with pressing on '' for 3 s. The display returns to normal.

Note that this theoretical trimming only works if the installation is made 100% correct and shall be avoided. Trimming with known weight is prefered.

4.2.6.3 Changing 'n', 'dp', 'd' och 'bi' Changing programmed 'n', 'dp', 'd' and 'bi'

parameters can be made without new trimming. If 'dp' is changed all weight settings must however be corrected, including trimweights ’trW1’ and ’trW2’.

4.2.7 Clock ('clock') Ajusting the time and date of the battery

operated clock. Year, month and day plus hour and minute can be set. While setting, the right decimal point is flashing with 1 Hz (1 time/s) if the clock is 'running'.

Select by pressing '' when 'clock' is shown on the display.

'yy' Setting of year. (0 - 99)

'mo' Setting of month. (1 - 12)

'dd' Setting of day. (1 - 31)

'hh' Setting of hour. (0 - 23)

'mi' Setting of minutes. (0 - 59)

The clock can also be adjusted in Operators Menu.

4.2.8 Cmmunication ('CSEtUP') Select by pressing '' when ‘CSETUP’ is shown

on the display. Select each channel/port separately (COM1 - COM 3). Select baud rate i kbaud, for instance 1.2 kbaud = 1200 baud.

Only 7 data bits with parity or 8 data bits without parity can be used.

4.2.8.1 Computer ('ComP.') COM1 (RS-232) or COM 3 (RS-485) is normally

used for communication with a computer. LCD-3 normally 'listen' to this port except when printing.

Select by pressing on '' when 'ComP.' is shown on the display.

'COC' Computer on port COM 1 - COM 3. Set the port where the computer is


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connected. Normally COM 1 or COM 3. Def.=1.

'Prc' Protocol: 0 = No selected protocol (Def). 1 = General communication protocol. See part 7.1. 2 = HBSW-8X00 (HP barcode) 3 = PLC-communication 4 = Display copy. 5 = Remote display RD 650. Gross weight. 6 = Remote display RD650. Net weight.

'Ctl' Control: 0 = not used (Def) 1 = XON/XOFF (Not COM 3)

'ASn' Automatic sending 0-63 (See 7.1.8). Def=0. (No of bytes for PLC-communication)

'ASn' = 64 Special. Sends a display copy of 7-segment format. One plus E1/E2.

'Si' Send interval 0.05 - 60.00 s. U = 0.10 ms => 10 times/s).

Control character

'S1' Message start character 1 (0-255). Def=2 (STX).

'S2' Message start character 2 (0-255). Def=0.

'd1' Data field end character 1 (0-255). Def=0.

'd2' Data field end character 2 (0-255). Def=0.

'E1' Message end character 1 (0-255). Def=13 (CR).

'E2' Message end character 2 (0-255). Def=10 (LF).

Modem

'mc' Computer communication via modem TD-22. See also Appendix C.: 0 = No modem (Def) 1 = Modem connected.

'to' Line aktiv 'timeout'. 0-255 s. Def=60s.

'Id' 6-digit id-number sent when com-

munication is established. Def=0.

An appropriate control character can be selected, depending on receiver. No character is sent to the computer if the control character S1 - E2 is set to 0. If 7 data bits are used, only control signs 0-127 can be selected.

A message sent to the computer is normally composed by a number of blocks with 10-14 characters, of which 2-6 are used to designate and 8 are data characters. The block ends with 2 Data End characters (d1 and d2). The 8 data characters normally consist of a value with -sign

as character 1, followed by 6-7 right margin justified figures including decimal point, if applicable.

STX + 'W R P R 0 1 _ _ _ 3 5 2 . 5' + CR + LF

The example shows writing of the weight 352.5 to the product register position 1. The message starts with STX and ends with CR and LF.

A complete message consists of start characters S1 and S2 followed by one or sometimes several data blocks end ends with end characters E1 and E2.

Example: STX Data block 1 Data block 2 Data block n CR LF

STX (ASCII 02) is normally used as start character S1. S2 is set to 0 and not sent. CR (ASCII 13) and LF (ASCII 10) are normally used as end characters.

Messages sent to LCD-3 must have the same control characters as programmed.

4.2.8.2 COM1 ('Com 1') COM1 (RS-232) is normally used for computer

communication.

Select by pressing on '' when 'Com 1' is shown on the displayen.

'br' Baudrate (1200 - 38400). Def 9600.

'db' No of data bits (7 or 8). Def=7

'PA' Parity: 0 = No 1 = Odd 2 = Even (Def)

4.2.8.3 COM2 ('Com 2') COM2 (RS-232) is normally used for printer

connection.


'br' Baudrate (1200 - 38400). Def 9600.

'db' No of data bits (7 or 8). Def=8.

'PA' Parity: 0 = No (Def.) 1 = Odd 2 = Even

4.2.8.4 COM3 ('Com 3') COM3 (RS-485) is normally used for computer

communication.


'br' Baudrate (1200 - 38400). Def 9600.

'db' No of data bits (7 or 8). Def=7.

'PA' Parity: 0 = No 1 = Odd 2 = Even (Def)

'UA' 'Unit Address'. Adress when multidrop is used. Def=00.


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4.2.8.5 Printer ('Pr SEt') Selection of printer port, printer type, number of

lines, page etc for printer.

Select by pressing on '' när 'Pr SEt' is shown on the displayen.

'POC' Printer On COM. Printer connected on port COM1 - COM 3. Set the port where the printer is connected. Normally COM 2. Def=2.

'Prt' Printer type: 0 = No preselected printer. 1 = Star SP-212 (Roll). Def. Sw: 1-1-0-1-0-0-1-0-0-0. 0=OFF/1=ON. Star SP-2320 (Roll). Sw1: 1-1-1-1-1-1-1-1. Sw2: 1-0-0-0-0-1. 0=OFF/1=ON.

3 = Star SP712MD (Roll). D from ver. 3.24, (9600, 8, no).

4 = DP8340,

5 = DP8340 Wide text (20 col.)

If a preselcted printer is used the COM-port parameters & 'Pr SEt' is preset automatically for selected printer.

'dtr' Check that the printer is ready (DTR). 0 = No control signal. 1 = Control by DTR=1. Def.

'PL' Page Length. No of usable pages/-side. 0 for roll printer. Def=0.

'tOF' Top Of Form. No of blank lines on top of page. Def=0.

'LL' Line Length. Def=40.

'Lm' Left Margin. Def=0.

4.2.9 ANYBUS interface ('AnYbUS') LCD-3 can be equiped with expansion card

containing ANYBUS standard bus interface. Via the interface it is possible to control inputs, outputs and panel switches and set value plus optaining the weight, control signals and status of the outputs.

The weight is available in 0-30000 divisions (Counts) and is always a positive integer (2 byte). Negative weight is indicated by a separate polarity bit. The real weight depends on programmed division (Count by) and decimal point placement.

The weight is available in both 'Intel' and 'Motorola' format. For example if the weight is 1000, division is 5 and the decimal point 0.0, then the real weight is 100.0*5=500.0 kg. Profibus DP (12 Mbit/s)

Setting of the address (0-99) is made on the switches Address (x10 and x1) on the rear panel. On the panel there is also LED:s with the following functions:

RED (ERR) ON = Profibus not in operation (Error)

GREEN ON = Spänning OK Ej busskommunikation

GREEN ON = Busskommunikation OK.

A termination resistor is connected by setting the switch T in position ON. A layout must also be selected in SETUP.

Setting of layout (In/Out word):

'LAY' 0 = Profibus DP not used. Def. 1 = Layout 1 (6 in/6 out)

For layout see appendix A.

4.3 Program setup ('PSEtUP') The program settings are different depending on

selected instrument function. See part 6 for ‘PSETUP’.

Use '' to select when ‘PSEtUP’ is shown on the display.

4.3.1 Test ('tESt') Hardware test of interface (OPTO inputs and

outputs and communication). Use '' to select when ‘TESt’ is shown on the display.

4.3.2 Testing inputs & outputs Test of the main board input IN0-IN1 and the

outputs OUT0-OUT3. The display shows 'I-O L' and then two digits which can be 1 or 0. The left digit indicates IN0 and the right digit IN1. The digits are 0 when there is no input signal and 1 when there is an input signal.

The outputs can be tested by depressing 0, BN, TARA or PRINT. The outputs OUT0-OUT3 are on when the switch in question is depressed.

Use '' to proceed.

If an expansion card with I/O is installed test of the expansion board input IN20-IN3 and the outputs OUT4-OUT7. The display shows 'I-O H' and then two digits which can be 1 or 0. The left digit indicates IN2 and the right digit IN3. The digits are 0 when there is no input signal and 1 when there is an input signal.

The outputs can be tested by depressing 0, BN, TARA or PRINT. The outputs OUT4-OUT7 are on when the switch in question is depressed.

Use '' to proceed.

Input test can also be made in Operators Menu.

4.3.3 Test of COM1 ('Com 1') Connect pin 3 and 2 of COM1. The display

normally shows 0. Depress PRINT. The display should show 1 as long as the switch is depressed if the test is in order.

Use '' to proceed.


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Use '' to proceed.



Use '' to proceed.

4.3.6 Fine trim analog output ('AnALOG')

By pressing '' when ‘AnALOG’ is shown on the display a 20.00 mA signal is available on the output corresponding to maximum no of divisions. The output can be fine trimmed ±2% by pressing on '+' and '-'.

Use '' to proceed.

4.4 Test of EEPROM ('EEtESt') All parameters and settings are stored in a

EEPROM memory, which retains the information also in case of power failure. To test the memory, depress ç when the display shows EEtESt. All values are restored to the memory after test.

During the test the display shows what part in kByte ('Chk 0' - Chk 31') is tested and if not OK 'EE-Err' is shown on the display. If OK next kByte will be tested. When the test is finished and there has been no error 'no Err' is shown on the display. The test takes about 5 minutes and should only be made if ab error in the EEPROM is suspected..

Use '' to proceed.

4.4.1 Save a copia of settings After all settings of parameters, trimming and all

other settings are made it is possible to save a copy of this initial settings. This copy can then later be used to restore the settings for LCD-3 if the operator make som wrong changes.

To prevent saving a copy by mistake the function to save is only available in 'SETUP' if no changes of parameters is done. Make first all settings and test the function. Then go back to 'SETUP', step to 'EECOPY' and press for ç 10 s and a copy is made.

Restoring is made from the operators menu by pressing '' for 10 s when 'Init S' is shown. The settings are restored and the instrument restarts.

4.4.2 Demonstration ('dEmo') LCD-3 can be programmed to simulate material

for demonstration or test. Weighing can be simulated by increasing or decreasing the weight at various

speeds. Various material speeds can be simulated by using different parameter values.

Use '' to select when ‘dEmo’ is shown on the display

'0/1' Demo ON/OFF: 0 = OFF. Def. 1 = ON.

'CoArSE' Coarse feed 0-9999. Def=60.

'FinE' Fine feed 0-9999. Def=15.

'EmPtY' Emptying 0-9999. Def=600.

'Fill' Filling 0-9999. Def=1000.

'ZEro' Zero offset 0-9999. Def=0.

4.4.3 End Note the parameters in Appendix Z if they have

been changed or make a printout from the operators menu.

Save the parameters and end SETUP by depressing '' for 3 seconds.

If no printer is connected note the PC value during startup and write it into Appendix A.

4.5 Serial number The serial number is shown during startup and

when printing SETUP.

4.6 Printout Page printer or roll printer can be used to print

settings and trimming values. The printer should be connected to the port selected in POC (4.2.4.5). Start printing by depressing PRINT for 3 seconds when in SETUP. The display shows 'Print' while printing.

When not in SETUP printing can be made in the Operators Menu. Select PRINT and SETUP.

When not in SETUP 'F'+'PRINT' will print time and gross weight.


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5 Technical data

5.1 Signal conversion Loadcell excitation ±5 VDC with sense

Loadcell current Max 200 mA

Insignal range 0 - 1.25, 0 - 2.5 & 0 - 5.0 mV/V Programmed using jumpers (0 - 2.5 mV/V on delivery)

Internal counts -200000 - +200000

Sensityvity 0.06 µV - 0.25 µV/A/D-count

Noice Max 0.3 µVp-p during 60 s

Nonlinearity Max 15 ppm

Temperature drift: Offset amplifier Max 0.05 µV/ºC Offset A/D-conv. Max 3 ppm/ºC Sensitivity Max 5 ppm/ºC

A/D-conversion Internally 4 kHz (250 µs)

Uppdate 50 conv./s (20 ms interval)

Integration time 20 ms - 1000 ms programmable

Expanded int. time 1 - 60 times

Reaction time Max 150 ms for 100% change of insignal (On 20 ms int. time)

No of divisions (n) -30000 - +30000 d

Division (d) 1, 2, 5, 10, 20 & 50

Decimal point 0 - 0.0 - 0.00 - 0.000

Zero indication Within ±1/4 d

Motion indicator Programmable change and time

5.2 OPTO-isol. inputs (2 st) Voltage/Current 10 - 30 VDC/10 mA (For 24 V)

Filter time 10 ms

5.3 OPTO-isol. trans.outp. (4 st) Voltage/Current Max 30 VDC/0.1 A (0.5 A - 50 ms)

Uppdating 50 times/s (20 ms interval)

5.4 Communication Chanels 1 chanel

Interface: COM 1 RS-232 COM 2 RS-232 COM 3 RS-485

Multidrop COM 3 Max 32 module/line

Baud 1200 - 38400 programmable

Data format:Start bit 1 bit Data bits 7 - 8 bits Parity No - Even – Odd Stopp bit 1 bit

5.5 Power supply Voltage 24 VDC (18 - 30 VDC including ripple)

Ripple Max 3 Vp-p

Power 9 W (Max 15 W)

5.6 EMC Immunity EN 61000-6-1, EN 61000-6-2

Emission EN 61000-6-3, EN 61000-6-4

5.7 Case General Shielded 'NORYL' DIN-case

Sealing Front panel IP 65

With-Height-Deep 144 - 72 - 155 mm

Monting hole 138 x 68 mm

Monting Designed for external cabinet

Weight 0.6 kg

5.8 Environment Temperature range: Operating -10 - +50 ºC Storing -25 - +85 ºC

Humidity 20 - 80% non condensating

Expansion board

5.9 OPTO-isol. inputs (2 st) Voltage/Current 10 - 30 VDC/10 mA (For 24 V)

Filter time 10 ms

5.10 OPTO-isol. trans.outp. (4 st) Voltage/Current Max 30 VDC/0.1 A (0.5 A - 50 ms)

Uppdating 50 times/s (20 ms interval)

5.11 Analog output Type Prog. 0-20 mA, 4-20 mA & 0-10 V

Resolution 12 bitar

5.12 Profibus interface Protocol Profibus DP

Layout 6 IN/& UT alt. 12 IN/12 UT

Word format 'Motorola' alt. 'Intel'

Communicat. speed Automatic detection (Max 12 Mbit/s)

Connection Shielded 9-pol D-SUB (Female)


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Picture 5.1 – Size LCD-3

Mounting hole


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6 Indicator Functions The indicator functions below is included in the

LCD-3 from program version 2.05. In the table i shows the number of products and if 2 feeding speeds is available and if also other outputs are available.

All functions except IF 1 and IF 2 has a complete automatic program. Some functions needs further expansion of the outputs with a standard relay or a small PLC with 4 inputs and 15 outputs for decoding of the binary output.

For closer description see the IF descriptions in part 6 where each function is more closely described including the connection diagram.

IF Indicator Function.

1 - 6 Product output:

= Output for 1 feeding speed

= Output for 2 feeding speed (Coarse-Fine)

B Output for mixer.

T Output for emptying.

L Output for alarm.

Ö Other outputs (No.) for refilling, rest weighing, batch ready etc.

Exp. Indicates that an axpansion of the outputs is needed.

Relay 2alt = 2 pole alternating relay

Binary = 4 bit binarr output (1-15)


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6.1 Set Point Function (IF1) Instrument with 4 programmable

setpoints and counting scale function.

Picture 6.1.1 – Connections of in- and outputs

The instrument has 4 programmable setpoints/ outputs. The outputs can be programmed for different functions and for comparing against gross weight or net weight. The inputs can be programmed for external control of the instrument.

The output hystereses (Difference between output ON and OFF weight) is in the functions 2 and 3 programmable by both upper and lower values are set for each setpoint. The functions 4-7 has a fixed hysteresis of 8 counts.

6.1.1 Connection The connection of power supply, inputs and

outputs are made on the 15-pin connector marked 'I/O & POWER' as shown in picture 6.1.1.

6.1.2 Programmable outputs The output parameters is in SETUP and can be

reached by pressing '' when 'PSEtUP' is shown on the display. 'P0' must be set to '1'.

Programming of function. Default = 3.

C0 Programming of output 0:

0 => Relay OFF 1 => Relay ON 2 => Relay ON if weight HIGHER than programmed setpoint value (NO) 3 => Relay ON if weight LOWER than programmed setpoint value (NC)

4 => Relay ON if weight INSIDE programmed setpoint values (NO)

5 => Relay ON if weight OUTSIDE programmed setpoint values (NC)

6 => Relay ON if weight HIGHER than programmed setpoint value (NO)

7 => Relay ON if weight LOWER than programmed setpoint value (NC)

NOTE! The functions 4 - 7 has a fixed hysteresis set at 8 counts.

C1 Programming of output 1: (See C0)



Programming of gross/net weight or peak value for comparing. Default = 0.

F0 Programming output 0: 0 => Gross weight 1 => Net weight 2 => Peak value gross weight 3 => Peak value net weight 4 => -Net weight (Negative weighing)

F1 Programming of output 1: (See F0)



Other program parameters:

P0 Set point function ON/OFF: 0 = OFF. 1 = ON (Default).

P1 Peak value function: 0 = OFF (Default). 1 = ON. 2 = ON. Stable weight required.

P2 Manual/Automatic weight printout: 0 = OFF (Default). 1 = By PRINT on the panel. 2 = Stable weight + weight >'empty'. 3 = By PRINT on the panel + stable weight + weight> empty

P3 Printout of: 0 = Gross/Netweight/pcs (Default) 1 = Date/Time + G/N weight/pcs. 2 = Date/Time + GROSS weight/ pcs.

3 = Date/Time + NET weight/pcs.

P4 Counting scale function: 0 = OFF (Deafult). 1 = ON.

P25 Delayed selection of 'Settings', 'Preset no of batches', 'Product reg.' and 'Clock': 0 = ''. D.


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1 = '' + 8 s. Keep switch depressed for 8 s to select function.

P37 Trim zero from operat. menu (0-25): 0 = Disabled (D).

1-25 = Enabled if the weight is within set % of the range.

Note the parameters (Appendix Z) or make a printout.

6.1.3 Programming of inputs The inputs can be programmeed for the same

function as one or more switches on the panel. The switches has a value accordig to picture 6.1. By setting a value for 'In0' and 'In1' it is possible to for example program the inputs for tareing the instrument (TARE) and toggling between gross and net weight (GN). The values 4 and 2 is then used for 'In0' and 'In1'.

Picture 6.1.2 - Programming of In0 and In1

Programming of inputs:

In0 Programming input 0 (Default = 4 => TARE)

In1 Programming input 1 (Default = 2 => GN)


All parameters are set to default position when the instrument function (IF) is changed. This can also be done manually, in SETUP step to position showing loadcell insignal value and depress ‘F’ for 3 seconds.

6.1.4 Setting of setpoints/outputs During normal use, settings can be made from

the panel. Depress ‘F’+'‘ to obtain the OPerators SELection menu (OP-SEL). See also picture. 6.1.3.

r-inst Counting scale settings. See 6.1.6.

SEtt

The following can be set when C0-C3 = 2-5: SP 0 L Setpoint 0 LOW (Lower).

SP 0 H Setpoint 0 HIGH (Upper).

SP 1 L Setpoint 1 LOW (Lower).





SP 3 H Setpoint 3 HIGH (Upper). The following can be set when C0-C3 = 6-7:

SP 0 Setpoint 0.

SP 1 Setpoint 1.

SP 2 Setpoint 2.

SP 3 Setpoint 3.

Print

P SEtU Printout of SETUP. Clock:

Clock Set date and time.

r-scale Conting scale function ON/OFF.

If left dp is on (see (2.8):

SETUP Go to SETUP.

SErvic Run time in hours.

Ct ms Only for service personal

InSiGn:

In0000 Test of inputs IN0, IN1, IN2 & IN3.

LCSiGn:

X.xxxxx Shows input signal from the loadcells in mV/V.

Select with ''. If P25=1 press '' for 8 s to select SEtt and Clock.

When changing a value the display automatically returns to show the weight 20 seconds after last switch is depressed.

6.1.5 Peak value The LCD-3 can also show peak value if 'P1'=1

or 'P1'=2. By pressing '‘ the display toggles between peak value and normal weight. GROSS or NET light diod is flashing when peak value is shown and the peak value can be reset by pressing '0'. The setpoints can be prgrammed to use peakvalue for comparison.

6.1.6 Counting scale When 'P4' = 1 the instrument can be set to

operate as a counting scale. The countig scale program is toggled ON/OFF by 'COUNt' in the OPerators SELection menu (OP-SEL). The most right decimal point on the display indicates that the counting scale program is now ON. The display now shows ‘no of pcs’.

By selecting 'C-SEtt' in the OPerators SELection menu (OP-SEL) it is now possible to set:

no PcS No of details put on the scale to calculate the weight/detail.

w/PCS Weight/detail. Calculated weight ('SAVE'/'no PcS'). Can be set manually if the weight is known.

SAVE The display shows the weight on the scale. By pressing on '‘ the weight/-


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Picture 6.1.3 – OPerators SELection menu


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detail will be saved and the display returns to normal.

If a value is shown the display automatically returns to weight/’no of pcs’ display approx 10 seconds after previous switch depression

Press '’ to select. If P25=1 press '’ or 8 s to elect Settings and Clock.

The display automatically returns to show the weight 20 seconds after last switch is depressed.


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6.2 Filling outputs (IF2) Instrument for filling/dosing with settings of

BATCH WEIGHT, HIGH SPEED FEEDING, INFLIGHT MATERIAL, TOLERANCE CHECK and EMPTY WEIGHT.

The instrumentet has 4 outputs which are used for high speed feeding, low speed feeding, tolerance check and empty indication (See picture 6.2.1). Setting is made (See picture 6.2.2) by setting the 'batch weight' and the 'high speed feeding' output is on until the weight reaches

'batch weight'-'high speed feed' (High speed feeding stop) and 'low speed feeding' output is on until the weight reaches 'batch weig-ht'-'inflight material' (Low speed feeding stop).

To make a tole-rance control tolerance limits can be set in weight or % of 'batch weight' depending of '%' in SETUP. Both an upper and lower limit can be set and the limit 'follows' the 'batch weight'. The output is on if the weight is within the limits. Comparison can be made to gross or net weight.

For empty indication an upper and lower limit can be set and the output is on if the weight is within the limits. Comparison can be made on gross or net weight.

All comparison is made with a fixed hysteresis of 8 counts.

The inputs can be programmed for external control of the instrument.

6.2.1 Connection The connection of power supply, inputs and

outputs are made on the 15-pin connector marked 'I/O & POWER' as shown in picture 6.2.1.

6.2.2 Programming The output parameters is in SETUP and can be

reached by pressing '' when 'PSEtUP' is shown on the display.

CF Use for high/low speed feeding & tolerance: 0 => Gross weight 1 => Net weight (Default)

E Use for empty indication: 0 => Gross weight 1 => Net weight (Default)

% Use weight or % of batch weight for tolerance: 0 => Weight (Default) 1 => %

P25 Delayed selection of 'Settings', 'Preset no of batches', Product reg.' and 'Clock': 0 = ''. D. 1 = '' + 8 s. Keep switch depresssed for 8 s to select function.






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6.2.3 Programming of inputs The inputs can be programmeed for the same

function as one or more switches on the panel. The switches has a value accordig to picture 6.2.3.

By setting a value for 'In0' and 'In1' it is possible to for example program the inputs for tareing the instrument (TARE) and toggling between gross and net weight (GN). The values 4 and 2 is then used for 'In0' and 'In1'.


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Picture 6.2.2 - Operators SELection menu

Pic 6.2.4 - OPerators Selection Menu


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Programming of inputs:

In0 Programming input 0 (Default = 4 => TARE)

In1 Programming input 1 (Default = 2 => GN)


Pic 6.2.3 – Programming of In0 and In1

6.2.4 Settings During normal use, settings can be made from

the panel. Depress F+'‘ to obtain the OPerators SELection menu (OP-SEL). See also ill. 6.2.4.

Following selections can be made:

Batch: bAtch Desired batch weight.

Settings: -HISP High speed feeding.

-InFl Inflight material (Low speed feeding).

-tol Lower tolerance limit.

tol Upper tolerance limit.

-EL Lower empty level.

EL Upper empty level.

Print: P B-S Print batch weight and settings.

P SETU Print SETUP.

Clock: Clock Set date and time.

When left dp is ON: SETUP Go to SETUP.


Ct ms For service personal only.

DEF.:

Press '' for minimum 8 s to go back to initial settings.

InSiGn:


LCSiGn:


Press '' to select. If P25=1 press '' for 8 s to select Settings and Clock.



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6.3 Automatic filling (IF3) Instrument for automatic filling/dozing with setting of BATCH WEIGHT, HIGH SPEED FEEDING, INFLIGHT MATERIAL, TOLERANCE and EMPTY LIMITS.

Picture 6.3. 1 – Can, bag filler etc.

This instrument function has an automatic program for filling with high speed and low speed feeding, tolerance control and, if programmed, emptying/batch ready. The program is started on an external START signal. The signal CONDITION can be programmed to be used as an condotion for start or emptying and for 'reset program' (Stop). Filling statistics can be obtained

from the instrument by the result registers.

The instrument can with this program be used for bag fillers, can fillers and similar applications where weighing is made directly in the bag/can or by a separate net weighing 'hopper scale' (See ill 6.3.1).

The instrument has four outputs, used for high speed feeder, low speed feeder, alarm and emptying (see picture 6.3.3). Setting (see picture 6.3.1) of batch weight and output feeding is made until the weight reaches batch weight-high

speed feeding weight and batch weight-inflight material weight. If only one feeding speed is used the FEED output is used.

Picture 6.3. 3 – Connection of inputs and outputs

For tolerance control, tolerance can be set as weight or % of batch weight, depending on SETUP (P11) setting. Lower and upper tolerance limits, following batch weight, can be set. There will be an ALARM signal if the weight is outside limits. The program will stop and there will be a lower or upper line flashing on the left display to indicate that the weight is below or above the tolerance limits. Use RESET (0) to reset the alarm.

For empty indication there is a upper and a lower empty limit. Emptying is made until the weight is lower than upper empty limit + a time.

All detections use a fixed hysteresis of 8 divisions.

The instrument can be programmed to automatically adjust high speed feeder and inflight material depending on filling result (P4). Adjustment is made in % of the dosing error and can be adjusted.

The instrument can be programmed (P5=2) to adjust the weight until it is approved by restarting filling until it is above lower tolerance limit. With the parameters P28 and P29 the ouput can be 'pulsed' until the weight is approved.

6.3.1 Connection Use the 15-terminal connector, marked I/O &

Power, to connect power, magnetic valves/relays, alarm signal and start signal, see picture 6.3.3.

6.3.2 Summation registers The instrument has two summation registers,

Sum and GSum. The registers must reset from the panel. Sum is used for actual run while GSum

Picture 6.3. 2 - Settings


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can be used to sum up the production during a day. To reset the registers, depress 0 while the register is shown on the display. See also 6.3.3 Total register.

For LCD-3 the registers are provided with a battery backup so they can retain the information in case of a power failure.

6.3.3 Total registers There are two registers for number of batches,

'tOtAL' and 'GtOtAL'.

The total register are used in parallel with the summation register, which means that they are automatically reset together. Resetting 'Sum' also resets 'tOtAL' and resetting 'tOtAL' also resets 'Sum', etc.

6.3.4 Program parameters The parameters are stored in SETUP and are

accessed by pressing '' while 'PSEtUP' is Picture 6.3. 4

shown on the display. D = Default (dEF).

P0 Time delay 0-25.5 seconds) after IN0=1. D = 0.5 seconds. P1 Tare function: 0 = Do not tare. 1 = Tare when weight is stable (D). 2 = Tare directly after time P0. 3 = As 1 with continuos mean value calculation. See 6.3.16.

P2 Time delay (0-25.5 seconds) after filling stop. D = 0.5 seconds.

P3 Weight recording: 0 = No recording 1 = Record when weight is stable. D. 2 = Record directly after time P2. 3 = As 1 with continuos mean value calculation. See 6.3.16.

P4 Automatic adjustment of high speed feeding and inflight material. Weight recording must be selected to obtain setting:

0 = No adjusting 1 = Adj. high speed feeding only. 2 = Adj. inflight material only. 3 = Adj. both high speed feeding and inflight material. D.

P5 Tolerance control. Weight recording must be selected to obtain tolerance control: 0 = No tolerance control. 1 = Tolerance control. D. 2 = Tolerance control + Automatic restart if tolerance LOW.

P6 Programming input signal IN1 (CONDIT.): 0 = No function

1= Wait for IN 1 prior to filling. 2 = Wait for IN 1 prior to emptying. 3 = Wait for IN 1 prior to filling and emptying. 4 = Start condition (IN1=0 resets internal program sequence). D.

P7 Emptying by time or weight: 0 = Manual emptying/Batch ready. 1 = Emptying until empty limit. D. 2 = Emptying by time (P8). 3 = Accumulated filling. See 6.3.20.

P8 Time delay (0-25.5 seconds) after weight below empty limit or emptying time if P7=2. D=0.5 seconds.

P9 Summary register division (1, 10, 100 and 1000). Divides the sum to provide a larger sum than otherwise can be shown using 6 digits. Depending on setting of P9 and dp the display shows the sum in ton instead. If kg is used 1 ton=1000 kg and if lb is used 1 ton=2000 lb. D = 1.

P10 Continuous printing. (Not LCD-3S): 0 = No continuous printing. D. 1 = Only start and end printing. 2 = Also printing each batch. Weight recording must be selected to permit printing. 3 = Only batch print (Time, no & weight) 4 = Receipt print (Time, net & weight) 5 = Only batch print (Batch no & weight).

P11 Used weight or % of batch weight for tolerance: 0 = Weight. D. 1 = % of batch weight.

P12 Start condition weight <empty? 0 = Not used. 1 = Weight must be <empty to start. D.

P14 Filling/output weighing time out 0.1-25.5 minutes. D = 1.0 minute.

P17 Blocking break or start filling for 0.0-25.5 seconds. Prevents too early break because of vibrations etc. D = 0 s.

P18 Breaking of high speed feeding delay 0.0-25.5 seconds. Prevents too early breaking. D = 0 s.

P19 Breaking of feeding delay 0.0-25.5 seconds. Prevents too early break-ing. D = 0 s.

P20 Computer monitoring: 0 = No message. D.


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1 = Send to computer with 1 second intervals.


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P21 Automatisk Batch weight for conti-

nuous flow weighing. See part Picture 6.3. 5 – Operators SELEction menu


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3.3.15: 0 = Not used. D. 1 = Used.

P22 Automatic reset of 'total' & 'Sum' on start: 0 = No clear. D. 1 = Automatic reset.

P24 Reset automatic adjust of high speed feeding and inflight material levels: 0 = Reset on new batch weight. 1 = No reset. D.

P25 Delayed selection of 'Settings', 'Preset no of batches', 'Product reg.' and 'Clock': 0 = ''. D. 1= '' + 8 s. Keep switch depresssed for 8 s to select function.

P26 Do not tare (0-255 batches). Number of batches between tareing. If >0 1 or more no tareing will take place during set no of batches. D=0 (Always tare).

P27 Show on display when batch ready: 0 = Net weight. D. 1 = Net weight. Go to gross when weight below EL. 2 = Gross weight. 3 = Registered batch weight.

P28 Pulse time (0-9.9 s) ON in automatic restart. 0 = No output. D=0.

P29 Pulse time (0-9.9 s) OFF in automatic restart. 0 = No output. D=0.

P30 Input of ID-no. on start: 0 = No ID-no. D. X = No of digits in ID-no. (1-6).

P31 PRINT button function: 0 = No function. 1 = Print of sum registers. D. 2 = Print of date, time & net weight. 3 = Receipt. As 2 + 7 line feeds.

P32 External batch adjust (See 6.3.17): 0 = Not used. D. 1 = Increase/decrease batch weight by P33 no of counts (e) or select batch size from product register. 2 = Select batch size from product reister by the length of the start signal (P33 s).

P33 Depending of P32.

P34 Enable preset no of batches/weight: 0 = Disabled. D. 1 = Enabled.

P35 Step up/down with X on batch setting.

P36 Puls output for akkumulating con-veyor belt etc.: 0 = Not used. D. 1 = 1000 pulses/batch (100.0%). 2 = 10000 pulses/batch. (100.00%)



Note all settings on appendix Z or make a printout. Printing must be selected.

Note that there is no recording of weight when P3 is set to 0. Tolerance control and automatic adjustment of high speed and low speed feeding can not be done. Set batch weight will then be used for the sum registers (Sum and GSum).


6.3.5 Setting of batch etc. & print During normal use, settings can be made from

the panel. Depress F+'‘ to obtain the OPerators SELection menu (OP-SEL). See also picture 6.3.5.


Batch: Prodno Last selected product from product (If EPr=1) register. See 2.7.

bAtch Desired batch weight.

Settings: -HISP High speed feeding (Coarse).

-InFl Inflight material (Fine).



Auto Automatic adjustment of high speed feeding and inflight material with x % of difference from recorded weight if P4>0.



L-bAtc Low batch size (Min) on automatic batch weight. Only if P21=1.

H-bAtc High batch size (Max) on automatic batch weight. Only if P21=1.

Preset: PSbatc Preset no. of batches (See 6.4.10).

PSSum Preset sum weight (See 6.4.10). Will be converted to no. of batches.

During filling: rESt Continue batch without reaching preset batch weight. For last batch with remaining material. No tolerance control is made.


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Product register: Pno 1-99 See 2.7.

Print: P B-S Print batch weight and settings.

P RESU Print result registers. Same as print key.

P PROD Print product register.

P SETU Print SETUP.


When left dp is ON (See 2.8): SETUP Go to SETUP.



DEF.:


InSiGn:


LCSiGn:


Press '' to select. If P25=1 press '' for 8 s to select Settings, Preset, Product register and Clock.


6.3.6 Start The weighing starts with START. The weight

must be within the empty limits if P12=1 and the batch weight must be larger than the set inflight material and smaller than the max load. The display shows 'PSbAtc' if preset number of batches is reached and start signal is repeated.

The instrument continues to weigh new batches if the START signal is steady. Also see 6.3.10 Preset number of batches.

6.3.7 Program sequence The output weighing program sequence can be

reset to base position using F+0. Se also P6. The sequence has the following steps:

1 Wait for start signal. Start condition: batch weight>inflight material and batch weight<max load.

2 Time delay time P0.

3 Tare depending on P1.

4 Fill, using high speed feeding and feeding.

5 Increase batch weight (totAL and GtotAL) with 1.


8 Record weight P3. There is no recording if P3=0 and the program goes to step 10.

8 Automatic adjustment P4.

9 Tolerance control P5. Weight outside tolerance can be reset using RESET or by a new start signal. (0). Record the weight.

10 Add recorded weight to sum indexes (Sum and GSum).

11 Empty until the weight is below upper empty level+ P8 time delay if P7=0 or empty on time P8 if P7=1. Timeout is indicated by flashing '='.

12 Ready. Continue from 2 if start signal is present.

6.3.8 Displaying result registers Depress '‘ to step through the result registers.

Following is shown:

totAl Number of batches.

Sum Sum register weight.

GtotAl Total number of batches.

GSum Total sum register weight.

mEAn Mean weight (Sum/totAl).

bAtch Latest batch weight.

A-HISP Adjusted high speed feeding.

A-InFl Adjusted inflight material.

Summation weight registers (Sum and GSum) texts can contain a t, which means that the sum is in tonnes instead of kg. Example: Sumt.

The display automatically returns to weight display 8 seconds after previous switch depression.

6.3.9 Printing Continuous printing is achieved on the printer if

selected by 'P10'. 'P10'>0 provides a start printing, starting with date/time, batch number and if product register is selected the selected product no. Thereafter, if selected, weighed net batches are printed one by one and finally a printout showing date/time and grand total for the entire batch. If 'P10'=2 only start and end printing occurs.

Example:

25/03/2003 08.36 Batch no: 1

Prod no. 8 Batch w : 50.00 kg

1 50.02 kg Sum: 50.02 kg

2 50.00 kg Sum: 100.02 kg

47 50.01 kg Sum: 2351.47 kg

48 50.03 kg Sum: 2401.50 kg

25/03/2003 09.45 Batches: 48

Sum: 2401.50 kg

Product no is only printed when product register is selected. When weighing is not going on, all Sum registers can be printed by depressing PRINT.


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6.3.10 Preset number of batches If P34=1 the number of batches to be weighed

can be preset either by directly setting the number of batches (PSbAtc = preset number of batches or by setting desired quantity (P-Sum = preset total weight). The number of batches will then be calculated.

To set, select PrESEt in Operator Selection menu. Set to 0 if preset is not required. Start can be done when preset number of batches is 0 or larger than weighed number of batches totAl. If preset number of batches is reached and a new start signal is given, PSbAtc will be displayed. The weighing is stopped after the set number of batches is reached. Set PSbAtc to 0 if preset batches is not desired.

The display automatically returns to weight display approx 20 seconds after previous depression of a switch.

6.3.11 Resetting program The program sequence can easily be reset

using F+RESET (0) or if P6='‘ by removing signal on IN1. If the instrument appears to be 'locked', it might be that the program sequence is started. Reset the program.

6.3.12 Time out If P14>0 a filling/output weighing time out is

obtained. It controls the filling/output weighing and if the set weight is not obtained within the set time (P14), the output is closed and the fault indicated by a flashing F to the left on the display.

Use RESET, (0) or a new START signal to reset time out.

6.3.13 Condition The input signal CONDITION can be used to

interlock. By setting P6 to 1-3, the input signal can be programmed to check that all valves are closed prior to filling and emptying. If CONDITION is

used as an extra condition for filling, P6=1 or P6=3, START must be on all the time. If P6=4 the program sequence is reset if IN1=0 (STOP).

The condition only means that a check is obtained prior to filling/emptying and NOT a continuous check during filling/emptying.

6.3.14 Computer communication The general communication protocol should

be prefered. Select the protocol by setting 'Prc'=1 (Part 3.2.5.1). See part 7.1 for general communication protocol. A simple computer communication for monitoring occurs if P(20)=1, 'Prc=0' and 'ASn'=0. LCD-3 then sends a message to the computer once every second. The message consists of 5 data fields containing batch weight (BW), gross weight (GW), net weight (NW), total number of batches (TB) and sum (SW). The data fields contain a right margin justified numerical value including decimal point if applicable. Each sentence includes set control character and the message starts and ends with control characters. See 4.2.5.1 for control characters and picture 6.3.5 for a data string example. Connect the computer according to picture 6.3.6.

Picture 6.3.6

The batch weight can be changed from the computer by sending a new string with a new batch weight, followed by a control characters, see picture 6.3.5. The decimal point can be omitted. Start and end characters as above.

Picture 6.3. 5


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Note that the LCD-3 cannot accept data while printing. A repeat sending might be necessary if the batch weight is not changed in the message from the LCD-3 to the computer (BW).

6.3.15 Continuous flow weighing When the instrument is used for a batch scale in

a continuos flow system, the batch weight can be automaticly adjusted for a higher accuracy during a longer time. In this type of weighing the accuracy of each batch is not so important. The mean value during a longer time is more important. This is done by with continuous calculation of the batch weight. The principle is that if a batch contains to much/less the following batch is reduced or increased with the difference and the new calculated batch weight will be used for the next batch. This function is selected by setting P21=1. Normally the function is disabled by P21=0.

This function should not be mistaken to be the same as the automatic adjustment of high speed feeding and inflight material levels to ensure that the actual batch weight will be the same as the preset batch weight.

IN1 is in this function used as an extra start condition (P6=1) to start each batch. The lowest batch weight ('L-bAtch') and the highest batch weight ('H-bAtch') allowed can be entered. If the calculated batch weight is smaller than the lowest ('L-BAtch') the preset batch weight is added to the calculated until the calculated batch weight is larger than lowest allowed batch weight.

6.3.16 Continuos mean value calculation

By setting P1=3 and/or P3=3 a continuos mean value calculation is started after P2 time. It means that after 1 second the mean value for the latest second i s used, after 2 seconds the mean value for the latest 2 seconds is used etc.

This function gives a faster stable weight (No motion) after the the filling is completed if the weight takes a long time to be stable. It can however give a false value if the variations is very high. Therefore the P2 time should be used to delay the start of the function.

6.3.17 Fast selection product/batch Fast selection of product or batch size kan be

made directly if you press on ”F” (If P32=1 or 3) or via external switches. By setting P32 to 2 or 3 it is possible by using 2 external switches, without entering the Operators Selection Menu, to select select product (If product register is selected) and batch size.

Changing the batch size is made by increasing/decreasing the batch weight with a programmable (P35) no of counts (e). The expansion card with IO is needed for this function.

Input IN2 is used for - (Decrease) and IN3 for + (Increase).

The function is:

When you press on ’F’ or any of the switches is pressed the batch weight is shown. Then it is possible to increase/decrease batch size by either pressing ’+’ or ’-’ on the panel or by pressing the external switches. Increasing/decreasing is made by a programmed (P35) no of counts. By pressing the switches more than 2 s the display start to count up and down automatically.

By pressing on both external switches for 8 s the operator can change how much the batch weight shall increase/decrease without going to SETUP (P35).

Changing the product no is made by increasing/decreasing the product no. The expansion card with IO is needed for this function. Input IN2 is used for - (Decrease) and IN3 for + (Increase).

The function is:

When you press on ’F’ or any of the switches is pressed the selected product no is shown. Then it is possible to increase/decrease product no by either pressing ’+’ or ’-’ on the panel or by pressing the external switches. By pressing the switches more than 2 s the display start to count up and down automatically. To abort press ‘0’. Then previous product no will be used.

If a value is shown the display automatically returns to weight display approx 20 seconds after previous switch depression.

6.3.18 Accumulating belt To accumulate a batch after output it is possible

to place a accumulating belt etc. after the outlet. With a suitable control it is possible to spread the material evan along the belt. The function requires that expansion card with IO is installed.

When P36=1 1000 pulses are output on OUT4 for each batch and when P36=2 10000 pulses are output OUT4. The pulses corresponds tp 100% of set batch size. Max pulse frequency is 50 Hz.

The control system for the belt must move the belt 0.1% (P36=1) or 0.01% (P36=2) of the belt length for each pulse.

6.3.19 Start signal length By setting P32=2 it is possible to select the

batch size from the product register by the length of the start signal. The length is programmed by P33 in seconds.

Example:

Set P32=2 and P33=5 (5 s).

A short start signal (<2.5 s) sets the batch size entered from the front panel.

A start signal with 5 s (>2.5 and <7.5) lenght sets the batch size to the size of product 1.


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Etc.

6.3.20 Accumulated weighing By setting P6=4, P7=3 and P12=0 the program

kan be used for accumulated filling without emptying between the fillings. Only one feeding speed is used and output OUT0 is used for “empty scale” indication. Set by “EMPTY”. OUT3 is used to indicate ”Manual Filling”/”Batch Ready”.

This function can for example be used for mixing a filled amount of fluid with a manuall filled sack of powder. The sack is then filled into the container/tank after each time. Then it is possible to mix several batches (Fluid+powder) after each other without emptying the container/tank.

The start signal is on IN0. When the filling of the preset batch is finished OUT3 will flash indicating the filling is finished and it is time to fill in the sack manually (”Manual Filling”). When the sack filling is done then you acknoledge by pressing on ”STOP” (IN1=0). The output OUT3 stops flashing and became steady, indicating ”Batch Ready”. “Batch Ready” is reset by a new start signal. Preferable should a separate acknoledge button (“ACKNOLEDGE”), connected in serial with ”STOP”, be used as an acknowledge button.

If a new start signal is given when OUT3 is flashing, the error message ”FILL” is displayed (Fill manually).


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6.4 Inverted filling (IF4) Instrument for automatic filling/dosing by inverted/negative weighing (output weighing). Setting of BATCH WEIGHT, HIGH SPEED FEEDING, INFLIGHT MATERIAL, TOLERANCE and REFILL LEVELS.

This instrument-function is used when tapping material from a weighed container, tank etc.as shown in ill. 6.4.1. The scale is first filled with material for one or se veral batches depen ding on setting. The 'filling' is then achieved by weight reduction (inver ted/negative weighing). When the material in the scale drops to the lower

level -FILL (Start refilling) (see ill. 6.4.2) or there is not sufficient quantity of material left for a batch, the scale is automatically refilled, if selected, until the weight reaches the up per level FILL (Stop reI filling). The instrument has in this function an automatic program (the same as IF3) for filling/output

Picture 6.4.3 - Connections

weighing with tolerance control. All settings, batch weight, high speed and inflight material and tolerance are set as for IF3. The program is started by an external signal START. The output weighing/filling starts when the instrument receives interlocking signal CONDITION (See P6). The instrument can provide filling statistics via an result register.

The instrument has four outputs, used for high speed feeding, low speed feeding, alarm and refilling (see ill. 6.4.4). Setting (see ill. 6.4.3) of batch weight and output feeding is made until the weight reaches batch weight-high speed feeding weight and batch weight-inflight material weight.

Using this function, the instrument can be used for bag filling, can filling and similar applications using negative weighing directly into the bag/can, and for example, for output bins. If only one feeding speed is used the FEED output is used. Depending on P7 a 'Batch ready' signal can obtained on OUT0 in combination with HISP.

For tolerance control, tolerance can be set as weight or % of batch weight, depending on SETUP (P11) setting. Lower and upper tolerance limits, following batch weight, can be set. There will be an ALARM signal if the weight is outside limits. The program will stop and there will be a lower or upper line flashing on the left display to indicate that the weight is below or above the tolerance limits. Use RESET (0) to reset the alarm.

The instrument can be programmed to automati-cally adjust high speed and inflight material depending on filling result (P4). Adjustment is made in % of the filling error and can be adjusted.

The instrument can be programmed (P5=2) to adjust the weight until it is approved by restarting filling until above lower tolerance limit. With the

Picture 6.4.1 – Inverted weighing


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parameters P28 and P29 the ouput can be 'pulsed' until the weight is approved.

6.4.1 Connection Use the 15-terminal connector, marked I/O &

Power, to connect power, magnetic valves, relays, fault signal and start signal, see ill. 6.4.4.

6.4.2 Summation registers The instrument has two summation registers,

Sum and GSum. The registers must be reset from the panel. Sum is used for actual run while GSum can be used to sum up the production during a day. To reset the registers, depress 0 while the register is shown on the display. See also 6.4.3 Total register.


6.4.3 Total registers There are two registers for number of batches,

'tOtAL' and 'GtOtAL'. The total register are used in parallel with the summation register, which means that they are automatically reset together. Resetting 'Sum' also resets 'tOtAL' and resetting 'tOtAL' also resets 'Sum', etc.


accessed by pressing '' while 'PSEtUP' is shown on the display. D = Default (dEF).

P0 Time delay 0-25.5 seconds) after IN0=1. D = 0.5 seconds.

P1 Tare function:

1 = Tare when weight is stable (D). 2 = Tare directly after time P0. 3 = As 1 with continuos mean value calculation. See 6.4.16.


P3 Weight recording: 0 = No recording 1 = Record when weight is stable. D. 2 = Record directly after time P2. 3 = As 1 with continuos mean value calculation. See 6.4.16.

P4 Automatic adjustment of high speed feeding and inflight material. Weight recording must be selected to obtain setting: 0 = No adjusting 1 = Adj. high speed feeding only. 2 = Adj. inflight material only. 3 = Adj. both high speed feeding and inflight material. D.

P5 Tolerance control. Weight recording must be selected to obtain tolerance control: 0 = No tolerance control. 1 = Tolerance control. D. 2 = Tolerance control + Automatic restart if tolerance LOW.

P6 Programming input signal IN 1 (CONDIT.): 0 = No function. 1 = Wait for IN 1 prior to filling. 2 = Wait for IN 1 prior to refilling. 3 = Wait for IN 1 prior to filling and refilling. 4 = Start condition (IN1=0 resets internal program sequence).D.

P7 Combined output OUT0 (HISP/'Batch ready'): 0 = Only HISP. D. 1 = Only 'Batch ready'. 2 = Combined HISP/'Batch ready'. See 6.4.16.

P9 Summary register division (1, 10, 100 and 1000). Divides the sum to provide a larger sum than otherwise can be shown using 6 digits. Depending on setting of P9 and dp the display shows the sum in ton instead. If kg is used 1 ton=1000 kg and if lb is used 1 ton=2000 lb. D = 1.

P10 Continuous printing: 0 = No continuous printing. D. 1 = Only start and end printing. 2 = Also printing each batch. Weight recording must be selected to permit printing. 3 = Only batch print (Time, no & weight). 4 = Receipt print (Time, net & weight). 5 = Only batch print (Batch no & weight).

P11 Used weight or % of batch weight for tolerance: 0 = Weight. D. 1 = % of batch weight.



P18 Breaking of high speed feeding delay 0.0-25.5 seconds. Prevents too early breaking. D = 0s.

P19 Breaking of feeding delay 0.0-25.5seconds. Prevents too early breaking.D = 0 s.

P20 Computer monitoring: 0 = No message. D.


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1 = Send to computer with 1 second intervals.

P21 Automatisk Batch weight for conti-nuous flow weighing. See part6.4.15: 0 = Not used. D. 1 = Used.

P22 Automatic clear of 'total' & 'Sum' on start: 0 = No clear. D. 1 = Automatic clear.

P23 Refilling: 0 = Automatic. D. 1 = Manual.


P25 Delayed selection of 'Settings', 'Preset no of batches', 'Product reg.' and 'Clock': 0 = ''. D. 1 = '' + 8 s. Keep switch depressed for 8 s to select function.


P28 Pulse time (0-9.9 s) ON in automatic restart. 0 = continuos output. D=0.

P29 Pulse time (0-9.9 s) OFF in automatic restart. 0 = continuos output. D=0.

P30 Input of ID-no. on start: 0 = No ID-no. D. X = No of digits in ID-no. (1-6).

P31 PRINT button function: 0 = No function. 1 = Print of sum registers. D. 2 = Print of date, time & net weight. 3 = Receipt. As 2 + 7 line feeds. P32 External batch adjust (See 6.4.17): 0 = Not used. D. 1 = Increase/decrease batch size by 'P33' no of counts (e) or select batch size from product register. 2 = Select batch size from product register by the length of the start signal (P33 s).

P33 Depending of P32.







6.4.5 Setting of batch etc. & print During normal use, settings can be made from

the panel. Depress F+to obtain the OPerators SELection menu (OP-SEL). See also ill. 6.4.5. Following selections can be made:

Batch:

Prodno Last selected product from (If EPr=1) Product register. See 2.7.

bAtch Desired batch size.

Settings:

-HISP High speed feeding (Coarse).

-InFl Inflight material (Fine).



Auto Automatic adjustment of high speed feeding and inflight material with x % of difference from recorded weight if P4>1.

-Fill Lower refilling level (Start refill).

Fill Upper refilling level (Stop refill).

L-bAtc Low batch size (Min) on automatic batch weight. Only if P21=1.

H-bAtc High batch size (Max) on auto -matic batch weight. Only if P21=1.

Preset:

PSbatc Preset no. of batches (See 6.4.10).

PSSUm Preset sum weight (See 6.4.10). Will be converted to no. of batches.

Product register:

Pno 1-99 See 2.7.

Print:

P B-S Print batch weight and settings.


P PROD Print product register.


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Picture 6.4.4 - Operator selection menu (OP-SEL)


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P SETU Print SETUP.

Clock:


When left dp is ON (See 2.8):

SETUP Go to SETUP.



DEF.:


InSiGn:


LCSiGn:




6.4.6 Start The weighing starts with START. Enough

material must be present in the scale to permit start and the batch weight must be larger than the set high speed feeding. The display shows 'PSbAtc' if preselected number of batches is reached and start signal is repeated. The instrument continues to weigh new batches if the START signal is steady. Also see 6.4.10 Preselecting number of batches.

6.4.7 Program sequence Scale refilling starts automatically after start if

selected. The refilling starts when/if the weight is below -FiLL or if the material quantity is not sufficient for a complete batch and is stopped when the weight reaches FiLL. If manual refill is selected the output FILL will be set to 1 when the weight is below FiLL and ALARM will be set to 1, disabling start, if the weight is below -FiLL.

The output weighing program sequence can be reset to base position using F+0. Se also P6. The sequence has the following steps:

1 Wait for start signal. Start conditions: Batch weight > inflight material. Batch weight < maxload. Gross weight > -'Fill' + batch weight. Preset no of batches = 0 or > 'tOtAL'.

2 Refilling if gross weight is below FILL.


4 Tare depending on P1.

5 Fill, using high speed and low speed feeding.

6 Increase batch weight (totAL and GtotAL) with 1.


8 Record weight P3. There is no recording if P3=0 and the program goes to step 10.

9 Automatic adjustment P4.

10 Automatik fine adjust of weight if P20 & P29 >0.

11 Tolerance control P5. Weight outside tolerance can be reset using RESET. (0). Record the weight.

12 Add recorded weight to sum indexes (Sum and GSum).

13 Ready. Continue from 1 if start signal is present.

6.4.8 Displaying result registers Press ‘’ to step through the result registers.

Following is shown:

totAl Total number of batches.


GtotAl Grand Total number of batches.

GSum Grand Total sum register weight.

mEAn Mean weight (Sum/totAl).

bAtch Latest batch weight.

A-HISP Adjusted high speed feeding.

A-InFl Adjusted inflight material.

Summation weight (Sum and GSum) register texts can contain a t, which means that the sum is in tonnes instead of kg. Example: Sumt.



selected by 'P10'. 'P10'>0 provides a start printing, starting with date/time, batch number and if product register is selected the selected product no. Thereafter, if selected, weighed net batches are printed one by one and finally a printout showing date/time and grand total for the entire batch. If 'P10'=2 only start and end printing occurs.

Example:

25/03/1994 08.36 Batch no: 1

Prod no. 8 Batch w : 50.00 kg

1 50.02 kg Sum: 50.02 kg

2 50.00 kg Sum: 100.02 kg

47 50.01 kg Sum: 2351.47 kg

48 50.03 kg Sum: 2401.50 kg

25/03/1994 09.45 Batches: 48

Sum: 2401.50 kg


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Product no is only printed when product register is selected. When weighing is not going on, all Sum registers can be printed by depressing PRINT.



To set, select PrESEt in Operator Selection menu. Set to 0 if preset is not required. Start can be done when preset number of batches is 0 or larger than weighed number of batches tOtAl. If preset number of batches is reached and a new start signal is given, PSbAtc will be displayed. The weighing is stopped after the set number of batches is reached. Set PSbAtc to 0 if preset batches is not desired.

The display automatically returns to weight display approx 20 seconds after previous depres-sion of a switch.


using F+RESET (0) or if P6=4 by removing signal on IN1. If the instrument appears to be 'locked', it might be that the program sequence is started. Reset the program.

6.4.12 Time out If P14>0 a filling/output weighing timeout is

obtained. It controls the filling/output weighing and if the set weight is not obtained within the set time (P14), the output is closed and the fault indicated by a flashing F to the left on the display.



interlock. By setting P6 to 1-3, the input signal can be programmed to check that all valves are closed prior to filling and refilling. If P6=4 the program sequence is reset if IN1=0 (STOP).


6.4.14 Computer communication The general communication protocol should

be prefered. Select the protocol by setting 'Prc'=1 (Part 3.2.5.1). See part 7.1 for general communication protocol.

A simple computer communication for monitoring occurs if P(20)=1, 'Prc=0' and 'ASn'=0. LCD-3 then sends a message to the computer once every second. The message consists of 5 data fields containing batch weight (BW), gross weight (GW), net weight (NW), total number of batches (TB) and sum (SW). The data fields contain a right margin justified numerical value including decimal point if applicable. Each sentence includes set control character and the message starts and ends with control characters. See 4.2.5.1 for control characters and picture 6.4.5 for a data string example. Connect the computer according to picture 6.4.6.

Picture 6.4.6

Picture 6.4. 5 – Example of data string


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The batch weight can be changed from the computer by sending a new string with a new batch weight, followed by a control characters, se ill. 6.4.5. The decimal point can be omitted. Start and end characters as above.

Note that the LCD-3 cannot accept data while printing. A repeat sending might be necessary if the batch weight is not changed in the message from the LCD-3 to the computer (BW).

6.4.15 Continuous flow weighing When the instrument is used for a batch scale in

a continuos flow system, the batch weight can be automaticly adjusted for a higher accuracy during a longer time. In this type of weighing the accuracy of each batch is not so important. The mean value during a longer time is more important. This is done by with continuous calculation of the batch weight. The principle is that if a batch contains to much/less the following batch is reduced or increased with the differens and the new calculated batch weight will be used for the next batch. This function is selected by setting P21=1. Normally the function is disabled by P21=0.

This function should not be mistaken to be the same as the automatic adjustment of high speed feeding and inflight material levels to ensure that the actual batch weight will be the same as the preset batch weight.

IN1 is in this function used as an extra start condition (P6=1) to start each batch. The lowest batch weight ('L-bAtch') and the highest batch weight ('H-bAtch') allowed can be entered. If the calculated batch weight is smaller than the lowest ('L-BAtch') the preset batch weight is added to the calculated until the calculated batch weight is larger than lowest allowed batch weight.




6.4.17 Fast selection product/batch Fast selection of product or batch size kan be

made directly if you press on ”F” (If P32=1 or 3) or via external switches. By setting P32 to 2 or 3 it is possible by using 2 external switches, without entering the Operators Selection Menu, to select

select product (If product register is selected) and batch size.

Changing the batch size is made by increasing/decreasing the batch weight with a programmable (P35) no of counts (e). The expansion card with IO is needed for this function. Input IN2 is used for - (Decrease) and IN3 for + (Increase).

The function is:

When you press on ’F’ or any of the switches is pressed the batch weight is shown. Then it is possible to increase/decrease batch size by either pressing ’+’ or ’-’ on the panel or by pressing the external switches. Increasing/decreasing is made by a programmed (P35) no of counts. By pressing the switches more than 2 s the display start to count up and down automatically.

By pressing on both external switches for 8 s the operator can change how much the batch weight shall increase/decrease without going to SETUP (P35).

Changing the product no is made by increasing/decreasing the product no. The expansion card with IO is needed for this function. Input IN2 is used for - (Decrease) and IN3 for + (Increase).

The function is:

When you press on ’F’ or any of the switches is pressed the selected product no is shown. Then it is possible to increase/decrease product no by either pressing ’+’ or ’-’ on the panel or by pressing the external switches. By pressing the switches more than 2 s the display start to count up and down automatically. To abort press ‘0’. Then previous product no will be used.


6.4.18 Accumulating belt To accumulate a batch after output it is possible

to place a accumulating belt etc. after the outlet. With a suitable control it is possible to spread the material evan along the belt. The function requires that expansion card with IO is installed.

When P36=1 1000 pulses are output on OUT4 for each batch and when P36=2 10000 pulses are output OUT4. The pulses corresponds tp 100% of set batch size. Max pulse frequency is 50 Hz.

The control system for the belt must move the belt 0.1% (P36=1) or 0.01% (P36=2) of the belt length for each pulse.

6.4.19 Start signal length By setting P32=2 it is possible to select the

batch size from the product register by the length of the start signal. The length is programmed by P33 in seconds.


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Example:

Set P32=2 and P33=5 (5 s).

A short start signal (<2.5 s) sets the batch size entered from the front panel.



Etc.

6.4.20 Batch ready If only one feeding speed is used it is possible

with a relay and by setting P7 to 1 have the signal ‘BATCH READY’ on output OUT0 instead of 'HISP'. If P7 is sett to 2 the signals share the output OUT0. The function is determined by the signal 'LOSP'. Om 'LOSP'=1 then 'HISP' is output and if 'LOSP'=0 then 'BATCH READY' is output. See pic 6.4.7.

Picture 6.4.7

The external relay for sharing of OUT0 must have maximum on/off-time by 50 ms. The output OUT0 is delayed for 50 ms (See pic 6.4.8) to allow the relay time to switch before the output is activated.


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6.5 Dosing 4 products (IF5) Instrument for automatic dosing of 4

products with setting of 4 PRODUCT WEIGHTS, INFLIGHT MATERIAL and EMPTY LIMIT

The instrumentet has in this function an auto-matic program for dosing of 4 products with one feeding speed. The program is started on external signal START. If a condition has been selected in SETUP (P6), the program waits for the signal CONDITION before starting (Reset program) or before the program starts to fill

each product. Filling statistics can also be

obtained from the instrument by result registers.

There will be a signal on outputs 0-3 for each product. For tolerance control, tolerance can be set as weight or % of batch weight, depending on SETUP (P11) setting. Lower and upper tolerance limits, following batch weight, can be set. The program will stop and there will be a lower or upper line flashes on the left display to indicate weights below or above the tolerance limits. use RESET (0) to reset.

For empty indication there is a upper and a lower empty limit. Emptying is made until the weight is lower than upper empty limit + a time. All detections use a fixed hysteresis of 8 divisions.

The instrument can be programmed to automatically adjust inflight material depending on dosing result (P4). Adjustment is made in % of the dosing error and can be adjusted.

6.5.1 Connection

Use the 15-pin connector, marked I/O & Power, to connect power, magnetic valves or relays, start and

condition signal, see ill. 6.5.3.

6.5.2 Summation registers The instrument has 4 summation registers 'Sum

1' - 'Sum 4' for the sum of each product 1-4 and also 'Sum' and 'GSum' for the sums of weighed batches. The registers must be reset (Set to zero) from the panel, but by setting P22=1, 'Sum' is reset automatically for each program start. 'Sum' is used for actual run while 'GSum' can be used to sum up the production during a day. To reset the registers, depress '0' while the register is shown on the display. Resetting 'Sum' also resets 'Sum 1' - 'Sum 4' and resetting 'GSum' resets all registers. See also 6.5.3 'Total registers'.

The instrumentet also has 4 registers 'Prod 1' - 'Prod 4' where the amount of material for each product in the last batch is saved.


6.5.3 Total registers There are two registers for number of batchs,

'tOtAL' and 'GtOtAL'. The total register are used in parallel with the summation register, which means that they are automatically reset together. Resetting 'Sum' also resets 'tOtAL' and resetting 'tOtAL' also resets 'Sum', etc.


accessed by pressing '�' while 'PSEtUP' is shown on the display. D = Default (dEF).

P0 Time delay 0-25.5 seconds) after IN0=1. D = 0.5 seconds. P1 Tare function: 1 = Tare when weight is stable

Picture 6.5.2 - Settings

Picture 6.5.1 – Dosing 4 prod.

Picture 6.5.3 - Connections


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(D). 2 = Tare directly after time P0


P3 Weight recording: 0 = No recording 1 = Record when weight is stable. D. 2 = Record directly after time P2.

P4 Automatic adjustment of inflight mat-erial. Weight recording must be selected to obtain setting: 0 = No adjusting 1 = Adj. inflight material.

P5 Tolerance control. Weight recording must be selected to obtain tolerance control: 0 = No tolerance control. 1 = Tolerance control. D. 2 = Tolerance control + Automatic restart if tolerance LOW.

P6 Programming input signal IN1 (CONDIT.): 0 = No function 1= Wait for IN 1 prior to filling.

4 = Start condition (IN1=0 resets internal program sequence). D.

P9 Summary register division (1, 10, 100 and 1000). Divides the sum to provide a larger sum than otherwise can be shown using 6 digits. Depending on setting of P9 and dp the display shows the sum in ton instead. If kg is used 1 ton=1000 kg and if lb is used 1 ton=2000 lb. D = 1.

P10 Continuous printing: 0 = No continuous printing. D. 1 = Only start and end printing. 2 = Also printing each batch. Weight recording must be selected to permit printing. 3 = Only batch print (Time, no & weight)

P11 Use weight or % of batch weight for tolerance: 0 = Weight. D. 1 = % of batch weight.

P12 Start condition weight <empty? 0 = Not used. 1 = Weight must be <empty to start. D.



P18 Breaking of high speed feeding delay 0.0-25.5 seconds. Prevents too early breaking. D = 0 s.

P22 Automatic clear of 'total' & 'Sum' on start: 0 = No clear. D. 1 = Automatic clear.


P25 Delayed selection of 'Settings', 'Preset no of batches', 'Product reg.' and 'Clock': 0 = ''. D. 1 = '' + 8 s. Keep switch depressed for 8 s to select function.


P28 Pulse time (0-9.9 s) ON in automatic restart. 0 = continuos output. D=0.

P29 Pulse time (0-9.9 s) OFF in automatic restart. 0 = continuos output. D=0.







6.5.5 Settings During normal use, settings can be made from

the panel. Depress F+to obtain the OPerators SELection menu (OP-SEL). See also ill. 6.4.5. Following selections can be made:

Batch:

Prod 1 Batch weight product no 1.



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Settings:



Auto Automatic adjustment of high speed feeding and inflight material with x % of difference from recorded weight if P4>1.



-inFL1 ‘InFligt material’ product 1.




Preset:

PSbatc Preset no. of batches (See 6.4.10).

PSSUm Preset sum weight (See 6.4.10). Will be converted to no. of batches.

When dosing

rEStw Continue without reaching set batch weight for the product. Restweighing. No tolerance contr-ol is made.

Print:

P B-S Print batch weight and settings.


P SETU Print SETUP.

Clock:


When left dp is ON (See 2.8):

SETUP Go to SETUP.



DEF.:


InSiGn:


LCSiGn:




6.5.6 Start The weighing starts with START. The display

shows 'PSbAtc' if preset number of batches is reached and start signal is repeated. The instrument continues to weigh new batches if the START signal is steady. Also see 6.5.10 Preset number of batches.

6.5.7 Program sequence The output weighing program sequence can be

reset to base position using 'F'+'0'. Se also 'P6'. The sequence has the following steps: 1 Wait for start signal. Start conditions: Gross weight > '-EL'. If P12=1 check for gross weight > 'EL'. Total batch weight prod 1-4 < max load At least 1 product batch weight > inflight material. If 'P6'=2 check for CONDITION=1.

2 Delay 'P0'.

3 If ´P6´=1 check for CONDITION=1.

4 Increase batch counters 'tOtAL' and 'GtOtAL' with 1. Reset 'Sum' if selected. Printout of batch no if selected.

5 Tareing depending of 'P1'. If product batch weight=0 goto 10.

6 Fill until weight > (set batch weight for the product - 'inflight' for the product).

7 Delay 'P2'.

8 Register the net weight if 'P3'>0.

9 Put/add the net weight to 'Prod 1-4' and 'Sum 1-4' and add the net weight to 'Sum' and 'GSum'.

10 Select next product and go to step 5.

11 Total printout.

12 Ready. If start signal is on continue from 1.

6.5.8 Displaying result registers Depress 4 to step through the result registers.

Following is shown: Sum 1 Sum material of product 1.

Sum 2 Sum material of product 2.



totAl Number of batches.


GtotAl Total number of batches.


Prod 1 Material in last batch of product 1.



Prod 4 Material in last batch of product 4

bAtch Last batch weight (Prod 1-4).

InFl1 Adjusted inflight material product 1.


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-InFl2 Adjusted inflight material product 2.



Summation weight (Sum and GSum) register texts can contain a t, which means that the sum is in tonnes instead of kg. Example: Sumt.

The display automatically returns to weight display 5 seconds after previous switch depres-sion.


selected by 'P10'. 'P10'>0 provides a start printing, starting with date/time and batch number. Thereafter, if selected, the net weight of each product are printed one by one and finally a printout showing date/time and grand total for the entire batch. If 'P10'=2 only start and end printing occurs.

Ex:

2003-11-11 08.36 Batch no : 8 Batch : 1000 kg Prod 1 : 235 kg Prod 2 : 431 kg Prod 3 : 101 kg Prod 4 : 230 kg 2003-11-11 09.45 Sum : 997 kg

When weighing is not going on, all Sum registers can be printed by depressing PRINT.



To set, select PrESEt in Operator Selection menu. Set to 0 if preset is not required. Start can be done when preset number of batches is 0 or larger than weighed number of batches tOtAl. If preset number of batches is reached and a new start signal is given, PSbAtc will be displayed. The weighing is stopped after the set number of batches is reached. Set

PSbAtc to 0 if preset batches is not desired.

The display automatically returns to weight display approx 20 seconds after previous depression of a switch.


using F+RESET (0) or if P6=4 by removing signal on IN1. If the instrument appears to be 'locked', it might be that the program sequence is started. Reset the program.

6.5.12 Time out If P14>0 a filling/output weighing time out is

obtained. It controls the filling/output weighing and

if the set weight is not obtained within the set time (P14), the output is off and the fault indicated by a flashing digit (1-4), depending of product, to the left on the display.



interlock. By setting 'P6' to 1, the input signal can be programmed to check that all valves are closed prior to filling each product. If CONDITION is used as an extra condition for filling (P6=1), START must be on all the time. If 'P6'=4 the program sequence is reset if IN1=0 (STOP).






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6.6 Dosing/Mixing 2 prod. (IF6)


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6.7 Dosing/Mixing 6 prod. (IF7)


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6.11 Automatic batching/sub batching (IF11)

Instrument alternates between IF3 and

IF42.

Ill 6.11.1 - Connections of inputs, outputs and SELECT relay

This instrument function has both an automatic

filling program (IF3) and a program (IF42) for filling by dividing the batch weight in to smaller batches, filled and emtied automatically.

The input IN1 is, when weighing not is started, used to select program and after start as programmable CONDITION. BATCH READY indicates that weighing is finished. On IF3 it means that a batch is in the hopper and on IF42 it means that preset batch weight is filled. The registered final batch weight is

then showed on the display.

A dubbel function is used on

the outputs OUT0 and OUT1. An external relay must be used (See ill 6.11.1). The relay is controlled by signal SELECT on OUT2. For relay timing see 6.42.14.

When the program is not started input IN1 select program. IN1=0 > IF3 and IN1=1 > IF42.

All parameters are set according to settings for IF3 except for P13 which is found in the settings for

IF42. Note that the program register can be used for IF11.

For program functions see IF3 and IF42.

Illl 6.11.2 – Function IF3/IF42


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6.31 Check weighing (IF31)


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6.41 Autom. hopper scale (IF41)


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6.42 Aut. Subbatch filling (IF42)


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6.51 Conveyor Scale (IF51) Indicator for conveyor scale. Weighing of a complete conveyor or only a roll.

Ill 6.51. 1

The indicator is used for a conveyor scale with summing of the weight and indication of the capacity. The complete conveyor can be weighed or only one or more conveyor belt rolls. The function requires a pulse transducer for measuring of the conveyor belt speed (50-100 pulses/meter) and feeding of material to the conveyor must be controlled by output OUT1.

The weighing program start on a signal on input IN0 or when the conveyor belt starts (A program-mable no of pulses/s is received) or when both conditions are met. Connection of the pulse transducer is made accordingly to ill 6.51.3.

Ill 6.51.1

The indicator can be ordered with a special panel for the conveyor scale function where the OUT2 and OUT3 texts are replaced by 'Sum' (Sum weight) and 'Cap' (Capacity). Graduation is replaced by 't' and 't/h'. When 'Sum' is displayed the 't' graduation should be used and when 'Cap is displayed the 't/h' should be used. Normal display mode ('Sum'/'Cap') is toggled by ‘F’.

The decimal point etc. are programmable for both the capacity while the sum is always 1/1000 of the roll load. The roll load is always shown in kg

Ill 6.51.2 and the sum weight in tonne. If the sum weight value is larger than what can be dispayed on the 6-digit display, the value is divided and the decimal point adjusted. The maximum value shown will then be 999999 tonne. Same thing for printouts.

The program normally starts with an automatic tareing (Dynamic zeroing) of the belt, if used for continuos weighing, and then a run signal (OUT1) is given to start feeding of the material. Otherwise the tareing must be started manually by pressing the “TARE” switch when the roll load is shown.

This tareing requires that the conveyor belt is empty and therefore there is an programmable lower and higher empty limits (See ill 6.51.4). If the weight is below or above the limits no tareing will take place. At first the belt is run one half belt length with no material feed to ensure that the belt is empty. Then the belt is run one whole belt length to measure the belt tare weight (Meanvalue of the roll load during one belt length).

Ill 6.51.3

SUM PULSEOUTPUT


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The calculation is basicly 'weight' x 'conveyor belt speed'. The measuring is made by calculating the mean value during 1 s then this weight is multiplyed with the belt moving distance during 1 s. The capacity is calculated by calculating the amount of material added during a programmable time ('Fct') converted to 't/h'. If the roll load (Scale) is below the programmable '0-tol' limit (See ill 6.51.4) the belt is assumed to be empty and the adding of weight is halted.

An automatic tareing can be made during run if ‘P1’ is set to 2 or 3. Tareing is then made in ‘P2’ intervals. If ‘P1’=3 the programs also waits for IN0=1 + ‘P8’ programmed time before tareing is made. If the mean value of the weight during a whole belt length is within ‘-tol’ and ‘tol’ (See ill 6.51.4) the interval timer is set to zero.

An automatic tareing can be made if ‘P1’ is set to 2 or 3. Tareing is then made in ‘P2’ intervals. If ‘P1’=3 the program also waits for IN0=1 + ‘P8’ programmed delay before tareing is made. If the meanvalue during a whole belt length during running is within ‘-tol’ and ‘tol’ (See Ill. 6.51.4) the interval timer is reset.

If a printer is connected printouts can be made from the panel or automatic on start and stop and when the ‘Sum’ register is cleared. When ‘Sum’ is cleared during run there will be a printout of the old sum and then a printout of the new cleared sum. On tareing the dynamic tare is printed.

The output OUT0 is used for indication that tareing is in progress (Steady, flashing or fast flashing) and the output OUT1 to control the feeding of material to the conveyor (Run). OUT2 och OUT3 are not used.

6.51.1 Connection Connections of power supply, pulse transducer,

lamp, relay and start signal/autotare signal, is made on the 15-terminal connector marked ‘I/O & POWER’ accordingly to ill 6.51.3.

6.51.2 Summation register The indicator has two summation registers, Sum

and GSum. By pressing on ‘’ the registers are shown. The registers must be zero set from the panel. Sum is used for actual run while GSum can be used to sum up the production during for example a day or a week. To zero set the registers, depress '0' while the register is shown on the display. If the 'Sum' register is already selected as normal display it can be set to zero by pressing '0' for 3 s.

If ‘Sum’ is shown on the display and batch weighing is selected you can alternate between ‘GROSS’=Sum register ‘Sum’ and a subbatch register/batch register. The bath register can be reset with ‘0’.

For LCD-3 the registers are provided with a battery backup so they can retain the information in case of a power failure. If a power failure occurs during a proceeding weighing, the weighing can continue after power return.

6.51.3 Settings in SETUP The parameters are extended with the following

settings for capacity measuring:

SCALE

‘Cn’ Max no of capacity counts. 100 – 10000 d in steps of 100. The indicator capacity range (Max capacity) will be ‘Cn’ * ‘Cd’.

‘Cp’ Programming of the capacity indication decimal point. 0, 0.0, 0.00 or 0.000.

‘Cd’ Capacity division 1, 2, 5, 10, 20 or 50. The indicator measuring range (Max capacity) will be ‘Cn’ * ‘Cd’.

’kg/pls' Sum pulse output. No of kgs for each pulse. D=1.

The parametern ‘Fct’ is used to set the time interval for capacity calculation for the capacity indication. The capacity during this interval is calculated each s. A short interval gives an ‘unsteady’ value with a 'fast response’ while an long time gives a more 'steady' value with a 'slow response'.

‘Fct’ Measuring interval for capacity 1-60s. D=10.

The parameters has been extended with the following:

CONVEY

‘bElt l’ Total length of the conveyor belt in m (X.xxx). See ill 6.51.1.

‘no PLS’ No of pulses/revolution (Pulse transducer).

‘r.diA’ Roll diameter (Roll with pulse trancducer)+Belt thicknes in m (X.xxx).

‘roll di’ Roll distance (Weighed part of the belt/2) in m (X.xxx). See ill 6.51.1.

‘m PLS’ Min no of pulses/s to indicate that the belt is running.

CALibr

'dynCAL' Dynamic trimming factor 90.0 - 110.0%. Multiplyed with measuring value. D=100.0.


accessed by pressing ç while PSETUP is shown on the display. D = Default (dEF).

P0 Time delay 0-25.5 seconds) after IN0=1. D = 0.5 seconds.

P1 Tare function:


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0 = Do not tare before start.

1 = Tare the scale before weighing. D.

2 = Tare also during run in ‘P2’ intervals.

3 = Tare also during run in ‘P2’ intervals and using IN0 as

a tare condition. ‘P3’ must be set to 1.

P2 Time delay (0-10.0 h) between auto matic tareing during run. D=1.0 tim.

P3 Start signal for weighing:

0 = Start on signal IN0.

1 = Start when conveyor belt speed is above set speed

'm PLS' (Pulses/s). D.

2 = Both conditions.

P7 Batch weighing:

0 = No batch weighing. D.

1 = Batchweighing enabled. P3 must be set to 1. IN0=1 start weighing.

2 = Batch measuring enabled. P3 must be set to 1. IN0=1 start measuring.

P8 Time delay (0-255 seconds) after IN0=1 when IN0 is used as an automatic tare condition. D = 0 s.

P10 Continuous printing:

0 = No continuous printing. D.

1 = Start, end and zero set printing.

P25 Delayed selection of 'Settings', 'Preset no of batches' and 'Clock': 0 = ''. D. 1 = '' + 8 s. Keep switch depressed for 8 s to select function.

P34 Enable preset no weight: 0 = Disabled. D. 1 = Enabled.


All parameters are set to default position when the indicator function (IF) is changed. This can also be done manually, in SETUP step to position showing loadcell insignal value and depress ‘F’ for 3 seconds.

6.51.5 Batch weighing/measuring By setting 'P7' to 1 a batch weight can be set.

When the indicator gets an start signal on input IN0 the barch reguster is reset and a printout is made (Start print) if selected. (See 6.51.10). If the display shows ‘Sum’ it changes to 'N' and shows the batch register. When the sum in the batch register is larger than set batch weight ’Batch’'-

inflight material 'Infl.’ the output RUN/MATERIAL (OUT1) goes OFF and the feeding of material is stopped. When the signal on IN0 goes OFF a new printout is made, if selected (End print).

If 'P7' is set to 2 an batch measuring function is selected. A corresponding function but without any batch setting and material stopping is made from an external system, for example an level sensor, so the total weight is divided into smaller batches.

When the sum weight is shown on the display it is possible to alternate between ('Sum' = GROPSS) and batch register (NET) using switch 'B/N'.

When the batch register is shown it can be reset with ’0’ and a printout can be made by pressing 'PRINT'.

When batch weighing/measuring is used ‘P1’ should med set to 0 (Manual tareing).

6.51.6 Operators menu During normal use, settings can be made from

the panel. Depress F+‘’ to obtain the OPerators SELection menu (OP-SEL). See also ill. 6.51.5.


Batch:

bAtch Desired batch size.

Settings:See ill 6.51.4 -InFl Inflight material (If P7=1).

0-tol Roll/Conveyor zero load limit.

If the load/weight is below this limit it is assumed to be 0 and the adding is stopped.

-tol Lower run tolerance limit.

tol Upper run tolerance limit.



Roll l:

’Roll l’ Roll load=Weight indicating. Shows the load on the weighed rolls/scale. Gross or net.

PrESEt: (If P34=1) PSSum Preset sum weight (See 6.51.10).

Print: P SEtt Print settings.

P RESU Print result registers. Same as Print key.

P SETU Print SETUP.


When left dp is ON (See 2.8): SETUP Go to SETUP.

SErvic Run time in hours and checking of pulse from from pulse transducer in ms (See 6.51.17) and belt speed in m/min..


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Val Ch For service personal only.

DEF.:


InSiGn:


LCSiGn:


Press '' to select. If P25=1 press '' for 8 s to select Settings, Preset and Clock.


6.51.7 Start/Tareing If 'P1' is set to >0 the weighing is started when

’P3' programmed condition is reached. The program is normally started with an automatic tareing (Set to zero) of the belt (If 'P3'>0'). Then a run signal is given which opens for the material. If 'FvSum' is shown on the display preset no. of batches has been reached.

If 'P1'=0 tareing must be started manually when the belt is running.

6.51.8 Program sequence Program sequence:

1 Wait for start condition (P3). OUT0=0, UT1=0.

2 Time delay for P0 time.

3 Tare depending of P1. The belt load/weight must be within the empty limits. OUT0 flashes fast if outside limits. Wait for belt to run for 1/2 belt ength. OUT0 flashes slowly.

5 Calculate the tare weight during 1 belt length. OUT0=1.

6 Open for material. Weighing is started. OUT0=0, OUT1=1.

7 Wait for time delay P2 if automatic tareing is selected otherwise go to 10. If the belt is empty and the weight during the whole belt length is within tol, the interval timer is reset.

If batchweighing is selected and a signal is received on IN0 the batch net weight is reset. Summation is then made and the output RUN/FEED (OUT1) goes OFF when batch net weight>(Set batchweight-Inflight material). Resets by IN0=0.

If batchweighing is selected and a signal is received on IN0 the batch net weight is reset. Summation is then made

8 Wait for IN0=1 for automatic tarering if elected.

9 Automatic tareing if selected. Return to 3.

10 Manual tareing is selected. Return to 3.

11 Wait for start condition to disappear or an over/underload.

Go to 7 if automatic tareing is selected.

12 Weighing is ended. OUT0=0, OUT1=0.

Adding of weight is done during 6-10 as long as the load/weight not is lower than 0-tol limit.

6.51.9 Displaying result registers Depress '‘ to step through the result registers.

Following is shown:



Summation weight registers (Sum and GSum) texts can contain a t, which means that the sum is in tonnes instead of kg. Example: Sumt. Reset by ‘0’.



P10>0 is selected. If ‘P10’ = 1 there will be a start and end printout with date/time. Thereafter there will also be a printout if Sum is set to 0.

Ex:

25/6/2000 08.40 Sum : 0.00 t 25/6/2000 08.55 Sum : 10.55 t 25/6/2000 09.43 Sum : 33.75 t 25/6/2000 08.43 Sum : 0.00 t 25/6/2000 08.48 Sum : 2.21 t

Line 1 is a start printout. Line 2 is an manual printout from panel. Line 3 & 4 is a set Sum to zero printout. Line 5 is a normal end printout.

When weighing is not in progress all Sum regsters can be printed by pressing PRINT on the front panel.

If 'P7' is set to 1 or 2 for batch weighing a start print and a end print of the net register is made if 'P10'>0. If 'P10'=2 line feed are made so it is possible to tear of a receipt.

Ex:

2000-06-25 08.40 Net : 0.00 t

2000-06-25 08.55 Net : 10.55 t

6.51.11 Preset Sum weight A preset amount of material can be set if P34=1.

The function is reached thrue PrESET in Operators Menu. Set required amount (PSSum=Preset Sum weight).

When preset amount is reached PSSum is shown flashing on the display and OUT1=0. Set PSSum to 0 if preset weight is not desired.


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Ill 6.51.4

The display automatically returns to normal display approx 20 seconds after previous depression of a switch.

6.51.12 Reseting program The program sequence can easily be reset

using F+RESET (0). If the indicator appears to be 'locked', it might be that the program sequence is started. Reset the program.

6.51.13 Data The following is required by the pulse

transducer:

Type: 24 VDC PNP-output

Pulse frequency: 50 - 100 Hz

Min pulse with (1): 3 ms (L PLS i service menu)

Min pulse dist. (0): 3 ms (H PLS i service menu)

Pulses/m: Minimum 5 pulses/meter belt

6.51.14 Communication The general communication program (See part

7) can be used with the following registers:

SR Set Registers

SR00 0-tol.Roll/Conveyor zero load limit. SR01 Lower tolerance limit SR02 Upper tolerance limit


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SR04 Lower empty limit SR05 Upper empty limit

SR09 Preset sum weight

SR21 Batch weight

SR61 Inflight material

RR Result Registers

RR00 Batch register (Subbbatch)

RR02 Sum weight

RR04 Grand sum weight

RR80 Capacity

Resetting (Write 0 to the register) of RR04 also resets RR02.

6.51.15 Dynamic trimming factor With this factor the weighing result can be

fineadjusted to compensate for eventual dynamic errors. The measuring value from the scale is multiplied with this factor which means that if the factor is increased the presented result will increase. The roll load is not affected. Before this compensation is used it is necessary to check that the scale weight correct, the belt tension is correct, rollfriction and belt condition etc. is ok.

If the scale conveyor during dynamic testing for example shows 1.5% to little the factor shall be increased with 1.5%. If the factorn is 100.0% is shall then be increased to 101.5%. The factor can be 90.0% - 110.0% and is set to 100.0% as default.

6.51.16 Panel functions In the conveyor program some indicators has a

different function than normally:

'Mot.' Only used when 'roll l.' is shown.

'0' When 'Sum' or 'Cap' is shown '0' indicats that the roll load is below set '0-tol' and summing is stopped.

'G/N' GROSS indicates that the 'Sum'-register is shown. NET indicates that the batch register is shown. When the roll load is shown GROSS=Load on the roll/scale and NET=GROSS Dynamic tare.

'8/ ' A flashing display indicates that the capacity or roll load is outside the programmed measuring range. Normally tor high roll load or to high capacity.

'OUT0' Tareing. Fast flash=Tareing in progress but roll load outside programmed empty tolerance ('EL' & '-EL'). Slow flash=Running the belt 1/2 belt length. Steady=Tare-ing in progress.

'OUT1' Belt running/Feeding material.

'Sum' Sum register alt. Batch register is shown.

'Cap' Capacity is shown.

In the scale conveyor program some switches has a different function than normally:

'0' Resets shown 'Sum' or batch register. Sum' has a 8 s delay.

'G/N' Alternates between 'Sum' and batch register when batch weighing is selected. When roll load is shown it alternates between GROSS and NET.

'T' Start manual tareing when selected. Roll load must be within set empty tolerances ('EL' & '-EL').

'F' Alternates between 'Sum'/Batch register and capacity.

6.51.17 Extens. of service menu In the scale conveyor program the service menu

has been extended with a possibility to measure pulse times from the pulse transducer, belt speed and belt lenght.

'L PLS' Low (Pulse=0) pulse lenght. Min 3 ms.

'H PLS' High (Pulse=1) pulse length. Min 3 ms.

'm/min' Measuring of belt speed in m/min.

'bEltl' Measuring of belt length. When pressing 'F' the display shows how long distance it has travelled since the last pressing of 'F'. Result shown in m (XXXX.xx).

When a measuring of the belt length is made it is advisable to make a mark on the belt. When the mark is over, for example the weighed roll, ‘F’ is pressed.

The belt is then run for for example 5 belt lengths and when the mark then is over the weighed roll 'F' is pressed again. The display now shows the toltal length the belt has travelled for 5 turns. The value is then divided by 5 for a meanvalue of the belt length ('bEltl').

Note that the mark should not be placed so the belt joint is near the weighed part of the belt when pressing 'F'.

6.51.18 Sum pulse output OUT3 can be used as a sum pulse output for

external registration of the weight passed the scale. The desired number of kg/pulse is set in parameter 'kg/PLS' under SCALE. Max 25 pulses/s can be output. Min pulse llength/-distance=10 ms.

The output is updated 1 time/s which means that each second a number of pulses are sent depending of how many kg that has passed the scale during the last second.


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6.61 Axel weighing scale (IF61)


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6.62 Grain dryer program (IF62)


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7 Communication prot. This section describes: General communication protocol Ext. selection of product from product regiser

Desired communication protocol is selected by parameter 'Prc' in setup, see 3.2.5.1. Communication can not established when the instrument is in ISETUP and SETUP mode. Desired port is selected by 'ComP'. 'ComP' = 1 is normal RS-232 and 'ComP' = 3 is RS-485. Note that only one way communication is established when LCD-3 sends automatically on COM 3.

LCD-3 uses the same internal communication channel for COM 1 – COM 3 and can consequently not communicate with computer when printing. This will create cummunication errors. On RS-232 and XON/XOFF LCD-3 sends XOFF to stop communication when printing and XON when printing is finished. If printer not is connected or not ON LINE, LCD-3 tries to send again every second.

For safe communication should automatic printingt not be used. Disable printing in SETUP and the PRINT-key on the front panl ('PFu'=47).

7.1 General protocol By using the general protocol it is possible to

read weight, status e.t.c and read/write all registers il LCD-3. The protocol i selected by setting 'Prc' = 1 (Se 4.2.5.1) in SETUP. Note that the simple communication, enabled by 'P20' in som instrument functions, must not be selected.

'P20' must be 0. The protocol can operate in two ways. By setting 'ASn' (Automatic Send no) = 0 it is possible to fully control LCD-3 externally. By setting 'ASn' = 1-63 automatic sending of desired message is selected.

LCD-3 sending interval is selected by 'Si', (Send interval) in steps of 50 ms. The sending interval must increase when more 'data blocks' are sent. Message is selected by using a binary code (1-63) showing which 'data blocks' to send. Each 'block' normally concists of 8 characters. While sending several 'blocks' the 'blocks' can be separated with block division characters 'd1' and 'd2'.

LCD-3 can also be remote controlled by simulating input signals on the inputs, IN[0] respectively IN[1] and by simulating operating of front panel switches/keys. It operates like an 'or' function so that the instrument reads a signal if for example IN[0]=1 or bit 0 in the external binary code =1. Remote control of the panel keys work the same way. A binary code is sent that responds to the internal binary code generated when a panel key is pressed. See ill 7.1.

The message to LCD-3 concists of 2 characters for read (RD) respectively write (WR) followed by 2 characters for data or address. When writing to

LCD-3 the instrument responds with the code for ACK (ASCII 6) if the message is OK otherwise with the code for NAK (ASCII 21).

A send message to/from LCD-3 always begins with start characters 'S1' followed by 'S2' and ends with end characters 'E1' och 'E2'. 'S2' and 'E2' is ignored if set to 0. There must be at least one start and one end character while 'S1' och 'E1' may not be set to 0. Block division characters 'd1' and 'd2' is not used when sending to LCD-3, only when LCD-3 send several blocks. Default in setup is 'S1'= STX (ASCII 2), 'E1'=CR and 'E2'=LF. All other=0. In the following description of messages to/from LCD-3 the start and end characters are omitted and shall be added to the messages.

The respond codes ACK and NAK is sent separately without start and end characters.

7.1.1 Connection control (ENQ) To check the connection only a simpler and

faster method can be used. This can particularly useful when multidrop (RS-485) is used and you want to check which units are connected. By sending the control character 'enquire' ENQ (ASCII 5) to LCD-3 you can check the the connection. LCD-3 always responds after 5 ms if there is a connection (If not printing). ENQ and ACK is always sent separately except on multidrop.

On multidrop (COM 3 - RS-485) you also have to state to which receiver the request is designated. The address is set under 'COM 3' (See 4.2.5.4). The address 0 do not set multidrop. On address >0 you first send the address (2 digits 01-99) before ENQ. For to example to check if an instrument with the address 5 is connected '05'+ENQ (3 charactrs) is sent without start and end characters. If there is a instrument with address 5 it will respond after 5 ms with ACK.

7.1.2 IN-signals (IN) By sending a binary code 00-03 to LCD-3 the

input signals are simulated.

The inputs has binary value as follows: IN[0] = 1 IN[1] = 2

The sum of the inputs binary value i sent as an 2 digit code 00-03.

To read the inputs to LCD-3 'RDIN' or 'RDIN00' issent. LCD-3 responds with the binary code '00-03' if the message is OK otherwise with NAK.

To write to LCD-3 inputs 'WRIN' followed by 'XX' is sent.

For example: 'WRIN03' sets both inputs to 1.

7.1.3 Panel Keys (PK) By sending a binary code 00-63 to LCD-3

pressing of panel switches/keys are simulated. The keyes has a binary value as shown in ill 7.1.


72/84

The sum of the keys binary value is sent as an 2 digit code 00-63.

Ill 7.1 – Front panel codes

To read panel keys from LCD-3 'RDPK' or 'RDPK00' is sent. LCD-3 responds with the binary code '00-63' if the message is OK otherwise with NAK.

To write to LCD-3 panel keys 'WRPK' followed by 'XX' is sent.

For example: To simulate pressing of TARE keyfirst 'WRPK04' is sent, then wait for ACK, send 'WRPK00' to 'release' the key and then wait for ACK again.

7.1.4 Date and time The internal clock of the LCD-3 can be read and

set by the serial port. To read the the time from LCD-3 the command 'RDTIME' is sent and to read the date the command 'RDDATE' is sent. Time and date are always 8 characters when reading or writing. The LCD-3 answers with 'HH:MM:SS' (Hour, minute & second) for time and 'YY.MM.DD' (Year, month & day) for date if the message is OK otherwise with NAK.

To set the time 'WRTIME' is sent direct followed by 'HH:MM:SS' and to set date, 'WRDATE' is sent direct followed by 'YY.MM.DD'.

7.1.5 Product Register (PR) Writing and reading of the product registers is

made by sending 'WR' or 'RD' followed by register type 'PR' and register no '00-99'. When writing to product register a 8 character data block with the value to be written to the register is added. Decimal point can be omitted when writing. Block division characters 'd1' are 'd2' not used when writing to LCD-3.

When a product is selected from LCD-3 the last used product no is saved in in 'PR00'. It is not possible to write to 'PR00'

To for example read the value in the product register no 36 'RDPR36' is sent. LCD-3 responds with the value in the register including decimal point if the message is OK otherwise with NAK. The answer always concists of totally 8 characters with 'leading zero blanking' (For example

'____45.2') where character no 1 is '-' when the value is negative. '_' = Space.

To write the value 33.6 to product register no 12 'WRPR12____33.6' is sent or 'WRPR12_____336' and LCD-3 responds with ACK.

7.1.6 Set Registers (SR) The set registers are used for setvalues. The

used registers is the same as the operator can set from the front panel of LCD-3, for example batch weight, coarse and fine, tolerance e.t.c. Writing and reading of the registers are made by sending 'WR' or 'RD' followed by type 'SR' and register no '00-99' as with the product register. Depending of selected instrumentfunction (IF) the registers may have different functions. Changes from the 'standard' register functions are described in part 6.

7.1.7 Result Registers (RR) The result registers are used for weighing

results. The used registers is the same as the operator can see from the front panel of LCD-3, for example no of batches, sum weight e.t.c. Writing and reading of the registers are made by sending 'WR' or 'RD' followed by type 'SR' and register no '00-99' as with the product register. Depending of selected instrumentfunction (IF) the registers may have different functions. Changes from the 'standard' register functions are described in part 6.

7.1.8 Send. weight & status (SEND) Weight and status can be 'polled' (Requested)

from the LCD-3 witha binary code 1-63 built up in the same way as for 'IN' and 'PK'. An answering message from the LCD-3 can contain up to 6 blocks. All blocks contain 8 characters. If block division characters are set, they will be sent between theblocks. The status block has 8 characters which can be '1' or '0' and in the weight block, the first character is the polarity.

The block has the following values:

1 Weight status = 1 Char 1 & Char 2 is a 2 digit consequent no. increased with 1 for each sending. Char 3: 1 = Nett/0 = Gross Char 4: 1 = '0' (Weight = 0) Char 5: 1 = Over/Under range Char 6: 1 = No motion Char 7: 1 = Tare weight>0 Char 8 1 = Program started

2 Gross weight = 2 Gross weight

3 Display weight = 4 Net or Gross weight

4 Flow = 8 Flow in kg/min

5 Sum weight = 16 (Result register RR02)


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6 Prog.status = 32 Char 1: Status OUT[0] Char 2: Status OUT[1] Char 3: Status OUT[2] Char 4: Status OUT[3] Char 5: Status IN[0] Char 6: Status IN[1] Char 7: 1 = Alarm Char 8: 1= Batch ready

The sum of the blocks binary value for the requested blocks, is sent to the LCD-3 with the command 'SEND' followed by the 2 digit sum. If the message is OK the LCD-3 will answer with the requested message otherwise it will answer with NACK.

For exaxample: 'SEND05' will start sending of 'Weight status'+'Display weight' (Gross or Net depending of block 1 character 3).

The highest communication rate when 'polling' is for 'IF'=1, 9600 baud and when 2 blocks are sent about 16-20 times/s and for 6 blocks about 8-10 times/s.

7.1.9 Automatic send (AUTO) Automatic sending of desired weight and status

blocks according to part 7.1.7 can be selected. By in SETUP set the parameter 'ASn'=1-63 (Hardware selected) or, if 'ASn'=0, by sending the message 'AUTO' followed by the binary code (See 7.1.8) for desired weight and status blocks (Software selected). For example the message 'AUTO35' will start automatic sending of weight status, gross weight and program status. Sending is made by 'Si' interval and is stopped by the message 'AUTO00'. Automatic sending is faster than 'polled'.

If software selected AUTO sending is used it is appropiate to stop sending while writing/reading 'IN', 'PK', 'SR' och 'RR'. When hardware selected AUTO sending is used, writing/reading can create problems.

Note that when RS-485 (COM 3) is used, LCD-3 can not receive data when automatic sending is started (Hardware or software selected).

7.1.10 Register description The registers are numbered 00-99. Note that all

numbers are not used and that the use can differ depending on selected instrument function (IF). For some instrument functions additional registers can occur. See respectively instrument function in part 6.

PR Produkt Registers:

PR00 Last manually selected product no

PR01 Batch weight product 1 ¦ PR99 Batch weight product 99

SR Set Registers:

SR00 0-tol.Roll/Conveyor zero load IF51 SR01 Lower tolerance

SR02 Upper tolerance SR03 Automatic adjust (%) SR04 Lower empty level or refill level SR05 Upper empty level or refill level SR06 Lower batch w. on autom. batchw. SR07 Upper batch w. on autom. batchw SR08 Preset number of batches SR09 Preset sum weight

SR20 Batch weight on sub batching SR21 Batch weight product no 1 ¦ ¦ SR28 Batch weight product no 8 SR29 Mixing time

SR41 High speed feed product no 1 ¦ ¦ SR48 High speed feed product no 8

SR61 Inflight material product no 1 ¦ ¦ SR68 Inflight material product no 8

RR Resultat Registers:

RR00 Output weight last batch RR01 Total number of batches RR02 Sum weight RR03 Grand total number of batches RR04 Grand sum weight RR05 Sum ordered weight (Cont. flow) RR06 Sum output weight (Cont. flow)

RR08 For internal use only ¦ ¦ RR12 For internal used only

RR21 Output weight product 1 last batch ¦ ¦ RR28 Output weight product 8 last batch

RR41 Sum weight product 1 ¦ ¦ RR48 Sum weight product 8

RR80 Capacity IF51

RR99 Internal A/D-value

7.1.11 Other 'Registers' All other registers are polled in the same way as

the registers above:

PV Instrument Program Version SN Instrument Serial Number

For. ex. will command 'RDPV' give the answer '____2.01' for program version 2.01.

7.1.12 Multidrop When COM 3 is used (RS-485) several LCD-3

can be connected to the same twisted pairs. You set the address on LCD-3 'UA'=1-99). Normally the address is set to 0 and when it is set to 1-99 a 2 digit extra address block is needed after the start characters 'S1' or 'S2' to send the message to the correct reciever. If block division charcters are used they are also sent between the address


74/84

and the next blocks. When LCD-3 responds with a message the respond message also concist of the address. The control characters ACK and NAK are sent by LCD-3 without address.

7.1.13 Application examples

7.1.13.1 Send only weight indicator When LCD-3 is used only to send the weight to

a computer or PLC-system, instrument function 1 is used (IF = 1). To send only 1 block containing the gross weight 10 times/s on the RS-232-output, the following setup may be used:

'ISEtUP' 'IF' 1

'SCALE' 'PFu' 1 (Only '0')

'ComP' 'COC' 1 (COM 1) 'Prc' 1 (Gen. protocol) 'Ctl' 0 (None) 'ASn' 2 (Gross weight) 'Si' 2 (100 ms => 10/s) 'S1' 2 (STX) 'S2' 0 'd1' 0 'd2' 0 'E1' 13 (CR) 'E2' 10 (LF)

'PFu'=1 disables all front panel keys except ZERO (0).

By setting 'ASn'=3 then 2 blocks are sent, weight status and gross weight. By setting 'ASn'=5 then 2 blocks with weight status and display weight is sent. Display weight is gross or net weight depending on block 1 char 3 (G/N). See 7.1.7.

7.1.13.2 Remote contr. ind. with prog. When LCD-3 is used as an weight indicator

together with one of the automatic programs and a complete remote control is desired, the following settings may be used. The RS-232-output is used and when automatic sendig is ordered it will take place 10 times/s:

'ISEtUP' 'IF' X

'SCALE' 'PFu' 63

'ComP' 'COC' 1 (COM 1) 'Prc' 1 (Gen. protocol) 'Ctl' 1 (XON/XOFF) 'ASn' 0 'Si' 1 (100 ms => 10/s) 'S1' 2 (STX) 'S2' 0 'd1' 0 'd2' 0 'E1' 13 (CR) 'E2' 10 (LF)

7.1.13.3 'Polled' weight indicator To use RS-485 (COM 3) and address 1 the

followng setup may be used:

'ISEtUP' 'IF' 1

'SCALE' 'PFu' 1 (Only '0')

'ComP' 'COC' 3 (COM 3) 'Prc' 1 (Gen. protocol) 'Ctl' 0 (None) 'ASn' 0 (Gross weight) 'Si' 1 'S1' 2 (STX) 'S2' 0 'd1' 0 'd2' 0 'E1' 13 (CR) 'E2' 10 (LF)

'COM 3' 'br' 9600 'db' 7 'PA' 2 (Even parity) 'UA' 1 (Address 1)

7.2 Ext. sel. product register By setting 'Prc'=2 the batch weight can be

fetched from the product register by an external message on COM1 from a computer or barcode pen. The program is made for barcode pen type HP HBSW-8X00. The code to be sent to LCD-3 is 'P01' - 'P99' with 'CR'+'LF' at the end. 'P' is programmed as start character 'S1'. 'S2', 'd1' och 'd2' is set to 0. 'E1' is set to 13 and 'E2' is set to 10. 'COC'=1 (Computer On Channel) which means RS-232 and 'Ctl'=1. 'ASn' is set to 0 and 'Si' are not used. COM1 is programmed for 9600 baud and 8 data bits with no parity.


75/84

Appendix A - Profibus DP


76/84

Appendix B - GSD-fil

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77/84

Appendix C - Modem

Modem for communication This section describes: Conn. of modem TD-22 as answering modem. Setting of parameters for LCD-3. To get started.

LCD-3 can be used together with an automatic answering modem for the possibility to call and read the weight. This can be particularly useful in silo and tank weighing where, for example, a supplier would like to know when it is time to refill a silo or tank.

LCD-3 program is intended for TD-22 modem but can be used for compatible modems. To simplify the installation TD-22 is delivered with the settings for the application and are ready to use.

Make sure the modem is started before power is connected to. On startup LCD-3 sets the modem automatically and test it every 10 s (TD & RD flash shortly). After the modem has answered LCD-3 first send ' LCD-3' and then 'ID' followed by a 6-digit id number. For example 'ID000011'. The id number is sent so the caller can check that the correct instrument has answered.

Then the communication can take place according to LCD-3 general protocol (See part 7). If the line is not active during a programmable time ('to' = 60 s) the connection is disconnected. Before disconnecting the LCD-3' send TIMEOUT'.

Pic C. 1

Connection

Connection of the communication cable between TD-22 and LCD-3 is made on COM1 according to pic C.1. Use a shielded cable. Connection of TD-22 telephone line and power supply is made according to TD-22 manual. Setting of parameters for LCD-3

Only the following 4 parameters must be changed from LCD-3 default. Parameter 'mc' is set to 1 and baud, data bits and parity for COM1 is changed to 9600, 8 & 0. See Part 4.2.6. Communication parameters shall be:

Kommunikation 'CSEtUP')

Dator ('ComP.') 'COC' 1____ 'd1’ 0____

'Prc' 1____ 'd2' 0____

'Ctl' 0____ 'E1' 13___

'ASn' 0____ 'E2' 10___

'Si' 100__ 'mc' 1____

'S1' 2____ 'to' 60___

'S2' 0____ 'Id' 0____ /1

/1 A 6 digit ID number.

COM1 ('Com 1')

'br' 9600_

'db' 8____

'PA' 0____ (Even)

Getting started

An easy way to test the function is via a PC with modem and the teminal program in Windows™, Hyperterminal. It can be found via Start, Program, Accessories, Communication.

Select Archive-Settings. Go thrue the parameters. Enter the telephone number and set baudrate 9600, 8 data bits, no parity and 1 stop bit. Select 'Send carriage return with line feed' in ASCII-settings. Save the settings.

Select Call-Dial up. After a while LCD-3 will answer with ' LCD-3' and programmed id no. 'IDXXXXXX' according to the general protocol format. The string start with STX (ASCII 2) followed by 8 characters and ends with CR+LF (ASCII 13 & 10). The modem is now 'transparent' and communication can be made according to the general protocol.

Ex: Press Ctrl+B (STX) followed by 'SEND02' and 'Enter'. LCD-3 answers with the weight.

If nothing is sent to LCD-3 during 60 s LCD-3 will send 'TIMEOUT' and LCD-3 will discnonnect the line. Otherwise end communication with Call-Disconnect.


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Appendix D - Pulses

Weight pulses This section describes: Connection to LCD_3 EXP4. Function of weight output pulses. Setting of parameters for LCD-3.

Besides that the weight value can be sent to an external control system via the analog output and the serial ports the weight can also be sent via digital counting pulses. For this function the expansion card EXP4 and external pulse counter or pulse counter input in control system is needed.

The external pulse counter can be a 2 channel up/down counter, eventually with a reset input, or a 1 channel counter.

EXP4 Signal Direction Ext. system

OUT4 Up Count up

OUT5 Down Count down

OUT6 Reset Counter zero

IN5 Sync Synchronize

The pulse frequency is max 1 kHz. 0,5 ms pulses with minimum 0,5 ms distance. 24 VDC. Min 25 mA load current on outputs.

Parameter P36 is used: P36 0 = No pulse function. D.

1 = Pulses for accumulating conv. 2 = Pulses for accumulating conv. 3 = Gross - 1 pulse/division (d) 4 = Gross - 1 pulse/kg 5 = Gross - 10 pulses/kg 6 = Gross - 100 pulses/kg 7 = Net - 1 pulse/kg 8 = Net - 10 pulses/kg 9 = Net - 100 pulses/kg Gross pulses (2 channels)

On P36>2 and P35<7 the gross weight is used and both up and down counting with reset. After power on LCD-3 will send first a Reset pulse to set the external counter to zero and then the required no of pulses to the external counter until it has been ”synchronized” with LCD-3 gross weight. When the weight is changed up or down pulses are send so the external counter will follow the weight.

On input Sync (IN5=1) LCD-3 will send first a Reset pulse to set the external counter to zero and then required no of pulses to the external counter until it has been ”synchronized” with LCD-3 gross weight. Net pulses (1 channel)

On P36>6 the net weight is used and only up counting (IF4 down counting) with or without zeroing. Pulses are only sent after a dosing sequence has been started plus P17 time. On start a Reset pulse is being sent to zero the external counter and then LCD-3 will wait P17 time and then the required no of pulses are sent until the external counter has been ”synchronized” with LCD-3 net weight. When the weight is increased up pulses (IF4 down pulses) are send so the external counter will follow the net weight.

If only a start impulse is given to LCD-3 a normal dosing will be made up to the in LCD-3 set batch weight. However, if the start signal is kept on until after P17 time, the dosing will stop when the start signal is removed. Then a tolerance control and “In flight” compensation is not made.

After dosing stop the pulse output is blocked until the weight is stable and has been registered. Then the remaining no of pulses are sent to the external counter until it has been ”synchronized” with LCD-3 registered net weight.

The advantage with this function is that it works almost like a dosing with a volume meter with pulse output. Existing program in the control system can then be used with minor adjustments.

The disadvantage with this function is that if the weight will decrease after dosing is stopped the external counter can not count down (IF4 up) since only one channel is us


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Appendix Y - News

News in version 2.01

New instrument function IF7 There is a new instrument function for

automatic dosing and mixing of 6 products with setting of batch weights, tolerances and mixing time. The function has a coded 4 bit binary output and is intended for connection to a PLC for decoding.

Printout in instrument function IF31 The instrument function has been updated with

a printout.

New instrument function IF51 There is a new instrument function intended for

a conveyor scale.

Selection of kg or lb The panel can now be ordered graded lb

instead of kg. In ISETUP there is now also a new selection to select lb or kg for printouts. See 4.1.

Copy of settings It is now possible, when all settings is made

and tested, to make a 'copy' of this initial setting which can be restored by the operator.

All parameters and settings are restored. See. 4.10.

Automatic answering modem LCD-3 can now be used together with an

automatic answering modem for the possibility to call the instrument and read the weight. This can be very useful in in silo and tank weighing where for example a supplier would like to know if it is time to refill a customer silo. See Appendix C.

Longer return time in OP-menu The time before the display returns to normal is

increased to 20 s when a menu selection is shown. It is now also possible to go back faster by pressing '0' when a menu selection text is shown.

If a value is shown the return time is 10 s. Note that if '0' is pressed when a value is shown the value will be set to zero. Always go back to the menu selection before pressing '0'. See 2.7.

Faster 'no motion' when unstable signal

There is now a possibility to get 'no motion' faster by starting a new mean value calculation when the waiting time for 'no motion' is to long for tareing or weight registration. New choise for parameter 'P1'. See. X.4.16.

ID-number It is now possible to select that an ID number

must be entered when starting weighing. New parameter 'P30'.

Function of the PRINT button It is now possible to select the function of the

PRINT button on the panel. New parameter 'P31'.

External push buttons for batch weight

If the IO-option is installed it is possible to change the batch weight or select product from the product register faster by 2 external push buttons. New parameters 'P32' and 'P33'. See. X.4.17.

Select batch size by start signal length

By changing the lenght of the start signal it is possible to select different batch sizes from the product register. This function should only be used when the batch size not can be set by the serial communication and only a few batch sizes are used. New parameters 'P32' and 'P33'. See X.4.17.

Preset no of batches or weight With the parameter 'P34' it is now possible to

disable the possibility to make a preset. If 'P34' is set to 0 no preset can be made. See X.6.10.

External setting of clock It is now possibel to read and set the internal

clock by the general communication program. See 7.1.4.

Program version and serial number It is now possibel to read both the program

version and serial number by the general communication program. See 7.1.4.

Note that some changes and new function are not valid for all instrument functions.


Ny instrument function IF61 There is a new instrument function for

automatic axle weighing scale..

Accumulating conveyor in IF3 & IF4 There is now a possibility to add a accumulating

conveyor for collection of a batch.



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New instrument function IF62 There is a new instrument function for a

automatic grain dryer.

News in version 3.0X

New A/D-converter In version 3 LCD-3 has a new high resolution

A/D-converter with 20-bits resolution. The old A/D-converter value has now been replaced by showing the loadcell output signal (LCD-3 insignal) in mV/V. It is now also possible to select a unipolar or bipolar measuring range ('bi'). It is now also possible to see the loadcell output (LCD-3 insignal) in mV/V by a new selection in the operators menu, 'LC-Sign'.

Max no of division has now been increased from 10000 d to 30000 d.

The integration time can also be expanded with a new parameter ’Eit’ (Default 1).



Changed denominations In version 3.2X ”calibration” has been changed

to more correct ”trimming”. See part 4.2.4. Then ”CAL0”, ”CAL1” and ”CAL2” is changed to trimpoint ”trP0”, ”trP1” and ”trP2”. Consequently ”AD0”, ”AD1” and ”AD2” are changed to insignal ”InS0”, ”InS1” and ”InS2” in mV/V.

Zero trim From version 3.22 it is possible to trim zero from

Operators Menu by setting prmP[37]>0. See 2.7.4.

New printer From version 3.24 a new printer, Star

SP712MD, is added and selected as standard printer. COM2 parameters is then changed to:

'br' Baudrate = 9600.

'db' No of data bits = 8.

'PA' Parity 0 = No parity

Changed IF1 From version 3.24 is P2 default in instrument

function 1 changed to 1 = “By PRINT on the panel”.



Accumulated weighing In version 3.40 for IF3 a new possibility to do

accumulated filling, without emptying between the batches, is added. See 6.3.20.



Remote large display In version 3.44 there is now a communication

program for a remote large display type RD 650. See 3.11. Can show gross weight or net weight.

For IF51 conveyor scale the capacity or sum weight can be shown.

New batch weight function in IF51 In version 3.44 a new batch weighing function

is added. It gives only a signal on reached set batch weight and do not stop the feeding.


Weight pulses Se Appendix D. A faster microprocessor has been introduced.


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Appendix Z - Parameters

Actual setting LCD-3

Ser.no:__________ Parameter change counter ’Pc’ ______

Note! Settings depends on selected instrument function (IF).

Instrument function (’ISEtUP’) ’IF’ _____ ’nop’ _____

’CF’ _____ ’ECS’ _____

’LA’ _____ ’lb’ _____

’EPr’ _____

Programming (’SEtUP’)

’n’ _____ ’St’ _____

’dp’ _____ ’Otr’ _____

’d’ _____ ’Fct’ _____

’bi’ _____ ’Cn’ _____

’It’ _____ ’Cdp’ _____

’Eit’ _____ ’Cd’ _____

’F’ _____ ’kg/pls’ _____

’Sd’ _____ ‘PFu’ _____

Conv. scale par (IF51) (’ConvEY’) ’bElt’ _____ ’rolldi’ _____

’no PLS’ _____ ’m PLS’ _____

‘r. diA’ _____

Analog output (‘AnALOG’) ‘Out’ _____ ‘Anlg’ _______

‘OFF’ _____

Trimming (‘trim’)

Zero trimming (‘trP0’)

‘InS0’ _______

Sensitivity trimming (‘trP1’ & ‘trP2’)

’trW1’ _______ ‘trW2’ _______

‘InS1’ _______ ‘InS2’ _______

Dynamic trimming of conv. scale

’dyntr’ _____

Communication (’CSEtUP’)

Computer (’ComP.’)

’COC’ _____ ’d1’ _____

’Prc’ _____ ’d2’ _____

’Ctl’ _____ ’E1’ _____

’ASn’ _____ ’E2’ _____

’Si’ _____ ’mc’ _____

’S1’ _____ ’to’ _____

’S2’ _____ ‘ld’ _____

COM (’Com1’) COM (’Com2’)

’br’ _____ ‘br’ _____

‘db’ _____ ‘db’ _____

‘PA’ _____ ‘PA’ _____

COM (‘COM3’) Printer (‘Pr Set’)

’br’ _____ ‘POC’ _____

‘db’ _____ ‘Prt’ _____

‘PA’ _____ ‘PL’ _____

‘tOF’ _____

‘LL’ _____

‘Lm’ _____

ANYBUS interface (‘AnYbUS’)

‘LAY’ _____

Program setup (‘PSEtUP‘)

Programming the outputs

‘C0’ _____ ‘F0’ _____

‘C1’ _____ ‘F10’ _____

‘C2’ _____ ‘F2’ _____

‘C3’ _____ ‘F3’ _____

Programming the inputs

‘In0’ _____ ‘In1’ _____

Program parameters

‘CF’ _____ ‘%’ _____

‘E’ _____

‘P0’ _____ ‘P9’ _____

‘P1’ _____ ‘P10’ _____

‘P2’ _____ ‘P11’ _____

‘P3’ _____ ‘P12’ _____

‘P4’ _____ ‘P12’ _____

‘P5’ _____ ‘P14’ _____

‘P6’ _____ ‘P15’ _____

‘P7’ _____ ‘P16’ _____

‘P8’ _____ ‘P18’ _____


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‘P18’ _____ ‘P28’ _____

‘P19’ _____ ‘P29’ _____

‘P20’ _____ ‘P30’ _____

‘P21’ _____ ‘P31’ _____

‘P22’ _____ ‘P32’ _____

‘P23’ _____ ‘P33’ _____

‘P24’ _____ ‘P34’ _____

‘P25’ _____ ‘P35’ _____

‘P26’ _____ ‘P36’ _____

‘P27’ _____ ‘P37’ _____

SCALEOMATIC®

© ERDE-Elektronik AB | 2011 LCD-3men.pdf 904036/110927

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Documents

MANUAL LCD-3