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OPERATING

AND

INSTRUCTION MANUAL

Pyrotechwww.peplelectronics.com

Pyrotech Electronics Pvt. Ltd. F-16A,Road No. 3, M.I.A., Madri, Udaipur,313003, indiaPhone -0091-294-2492121,2492123 -125 Fax - 0091-294-2492126 Email - [email protected] , [email protected] - www.peplelectronics.com

µC BASED 8 CHANNEL

UNIVERSAL SCANNER

Operating Manual 8 Channel Universal Scanner Pyrotech 1/14

DOC. NO. - W/R&D/28/13/69 Rev:00/04/09

INSTRUCTION MANUAL OF TEMPERATURE SCANNER

Introduction: Pyrotech Scanner is designed to monitor, display, annunciate & trip upto 8 input points. Microcontroller based design offers keyboard programming, individual limit setting or group settings. The unit is designed to accept various inputs. Further, for linear inputs, scaling facility is provided.

Features: a) Micro controller based.

b) Upto 8 channel.

c) Universal RTD, T/C, DC mA & DC volt inputs.

d) Any channel any input.

e) Input range selectable.

f) Group selectable (Maximum 2 groups).

g) Alarm/ Trip set points programmable through keyboard.

h) Panel Mounting.

i) Common dead band setting.

j) Protected for sensor open condition.

k) Memory retention more than 5 years.

l) Soft touch switches.

m) Auto scanning.

n) Any particular channel can be held indefinitely in manual mode.

o) Bypass facility to skip channels.

p) Trip relay is configurable.

q) Any channel in any group.

Specifications: 1) Supply Voltage : SMPS Supply (90-270VAC)

2) Input : Universal RTD, T/C, DC mA & DC volt inputs.

3) Input range : Refer TABLE 1(Pg. 2)

4) Setting method : Digital setting with Up, Down, Mode & Ack key.

5) Display : 7 Segment LED display.

6) Indications : 3 digit for parameter name.

: 4 digits for parameter value.

7) Size of digit : 0.5” height.

8) Display colour : Red.

9) Control action : ON / OFF(relay energized for normal running) i.e. fail safe condition.

10) Output : a) LED Indication for all channels 1) At Alarm Set point : Refer table1a (Pg. 6).


b) At Trip Set point: Refer table1a (Pg. 6).

c) NO/NC relay contact with 5A / 230VAC common for all Alarm and all Trip relays.

11) Power fuse : FRV016-240F,PTCVAR.RES016A-240VR-FUSE

12) Accuracy : ± 0.25% of span, ± 1digit

13) Operating ambient : Temp :- 0-60oC

14) Mounting : Panel mounted.

15) Housing : Sheet Metal.

16) Terminals : Suitable for conductor upto 1.5 sq mm wire only.

17) Bezel size : 96 MM x 192 MM

18) Weight : Approx. 2.5Kg.

INPUT TYPE INPUT RANGE

RANGE MINIMUM MAXIMUM

RTD (PT-100) -200 ºC 840 ºC

MAMP (4-20mA) -1999 9999

VOLT (1-5Volt) -1999 9999

K TYPE T/C -180ºC 1350ºC

J TYPE T/C -120ºC 1000ºC

E TYPE T/C -120ºC 750ºC

N TYPE T/C 0ºC 1300ºC

R TYPE T/C 0ºC 1760ºC

S TYPE T/C 0ºC 1760ºC

T TYPE T/C 0ºC 400ºC

TABLE 1

Scanner Description:

Keys:

Mode : To take unit in program mode. To change from one set of parameters to next. (Move horizontally).

Acknowledge key : To take unit in run mode.

Up : To increment a parameter in configure mode and to increment channel number in manual mode. To enter into manual mode when the scanner is in RUN Mode. Increment is time specific that is depending on the amount of time the key is pressed, the value is incremented in steps of 1,10,100 &1000.

Down : To decrement a parameter in configure mode and to decrement channel number manual mode. Decrement is time specific that is depending on the amount of time the key is pressed ,the value is decremented in steps of 1,10,100 &1000 .

Left display : Displays channel number in run mode. In manual mode, only number is displayed. Displays parameter name in program mode.

Right display : Displays “ BURN “,” SRT “ or process value in run mode and value of parameter to be changed

in program mode.


LED’s : Refer table 1a (Pg. 6).

Main features: Channel Switching

In Auto mode, each channel is displayed in turn. The display switch time can be from 2sec to 180sec. After the last channel, the 1st channel will be displayed.

The display refreshing of channel number is totally independent of sampling time. The channel sampling continues at a very fast speed and is not affected by time set for display.

Eg. If the channel select is 12 seconds, its value in memory is updated every time a new sample is taken but channel is displayed in ascending order when its turn comes.

Channel Bypass Logic:

A channel can be bypassed in totality i.e. it shall not be displayed nor it will affect any control functions. Next channel will be displayed if the channel is bypassed. If last channel is bypassed, then after last but one channel, first channel is displayed.

After Alarm condition, if a channel is bypassed, the relay returns to normal state and LED becomes OFF. After Trip condition, if a channel is bypassed, then relay and LED indication shall get reset only after acknowledging.

Interesting point is that what would happen when all channels are bypassed? In such a case, a message is displayed on the display ‘ ALL BPAS ‘.

Hysterisis

Hysterisis will always be set in terms of process value. User has to take care that dead band is not more than the Alarm point itself. In case, it is more, then no action will be taken to make the relay 'On' for any process value between 0 and Alarm point i.e. it will always remain ' off '.

Eg. If this value is set as 10, with alarm point as 200, no action is taken for input process value between 190 to 210. After 210, relay will become OFF and below 190 only, it will become ON.

This feature is to reduce relay operation and hence life of the Control element / Annunciator connected to the relay contacts. One can select dead band between 0 to 254.

Trip LED Control Logic

Trip type can be set for each channel. Low type Trip means, Trip condition is assumed if measured variable is less than the Trip set point. High type Trip means, Trip condition is assumed if measured variable is more than Trip set point.

Depending on Trip type, if the Trip condition occurs, appropriate LED will blink. The Trip will reset after the parameter value will return to the normal value only after acknowledgement. At Alarm Set point, relay logic is different, it follows the input (no acknowledgement is required). Trip value is always greater than Alarm value.

Burnout Indication

Burn out indication is displayed when a sensor failure is detected. The interface circuit is designed such that on failure of sensor, input voltage is driven towards saturation (assumes high temperature).

Note that like relays, ' burnout ' indication will follow the input i.e. if the status becomes normal, in the next scan, automatically new value will be displayed and not the old ' burn ' message.

[Short Indication

If the Cable or Sensor is shorted by mistake, the short message ' Srt ' will be displayed.

[Reliability Issues

Checksums of EEPROM are maintained in this unit. EEPROM CS is checked at the power on and is updated each time you change any parameter. After changing the checksum, it will once again recheck it. In case of checksum not matching, it will try to write the default values in the EEPROM. User has to change this value to the


required values before he can continue. If the EEPROM itself is absent or is corrupted, then this will happen in continuous loop & you will not be able to proceed ahead. In no case, one will be allowed to resume with corrupted values.

Display Logic

Display is not configurable i.e. user can’t decide what is to be displayed. The left display is dedicated for displaying channel number whose process value is currently displayed. In program mode, it displays the descriptor string of the parameter under change.

The right display will normally show the process value in run mode. In program mode, it will show the value of the parameter like High / Low, Yes / No, 400, 180 etc.

At Power On

If the unit is not configured, or check sum of the EEPROM is not found ok, unit will display message ‘ CSE EROR ’ for a short duration and then unit start functioning with the default value.

Normally, if everything is ok, unit directly jumps to the scanning mode starting from channel number 1.

Configuration and Operation: Explanation of Modes

User interface is divided into 20 modes or groups. These modes are divided as per their function. One can change

the mode by pressing ‘MODE’ key. The modes are listed as under:-

Mode1: Key Mode parameters

The various parameters you can set here are: -

Name Symbol Lower Limit Higher Limit

Channel switch time (in seconds)

Dead band

Address (for Modbus Communication)

Mode2: Channel 1 parameters:

The various parameters you can set here are: - Example Input as RTD follows as below

Name Symbol Lower Limit Higher Limit

Input type

Decimal point

Zero Range

Span Range

Alarm value

Trip value

Trip relay

Channel Bypass

Group Selection


Mode 3 to 16 is similar, only the channel number changes.

For other inputs, Zero range, Span range, Alarm value, Trip value, follow TABLE 1(P.g.2)

Decimal point displayed in case of mA/Volt input.

Mode 17, 18: To Calibrate Zero & Span:-

Note: ZERO can’t be higher than SPAN. Mode 19: -To copy data from channel 1 to rest of all. Name Symbol Copy Data Mode 20: -To Exit from Program Mode: Name Symbol

Exit From Keyboard

Name And Function Of Respective Parts On Front Facia:

1 2 3 4 5 6 7 8

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Pyrotech µScan 8U

ACK

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Parameter: a) Displays channel number in normal run mode.

b) Displays channel select time ( Cst ).

c) Displays common dead band ( dbnd ).

d) In manual mode, displays only channel number.

e) Displays different input type, zero range, span range, Alarm value, trip value, Trip type, Bypass and Group

Name Symbol Lower Limit Higher Limit Zero

Span


selection.

f) Displays Zrd.

g) Displays Spd.

h) Displays error code when error occurs.

Process Value: a) Displays process value in normal run mode.

b) Displays channel select time period in seconds.

c) Displays common dead band value.

d) Displays different, Input Type, Zero Range, Span Range, Alarm Value, Trip Value, Trip type, Bypass and Group Selection.

e) Displays error code when error occurs.

LEDs: Refer table 1a.

ALARM LED’s: Refer table 1a.

TRIP LED’s : Refer table 1a.

Relays & LED’s status for Relays ‘Hi’ is shown below in table:

Condition Led’s Alarm Relay Trip Relay Normal OFF ON ON PV>Al+dbd ON OFF ON PV>trip value Blink OFF OFF PV> trip value (Ack) Blink OFF (no effect) OFF (no effect) Alarm<Pv<trip value Blink OFF OFF Alarm<Pv<trip value (Ack)

Steady On OFF OFF

Pv<alarm<trip value (before Ack)

Blink ON OFF

Pv< alarm<trip value (Ack)

OFF ON ON

Pv<alarm OFF ON ON

Table 1a NOTE: - Trip type “LO” means Trip value is always less than alarm value and both are

normally lower than span range. In the above table, read ‘>’ as ‘<’ & other conditions remain same.

Keyboard Operation:

M ACK (Program/Run mode key)

Press Mode key to go in program mode. If you are in program mode, then pressing Acknowledge key will take you back to the normal running mode.

While in programming mode, one can press Acknowledge key any time to come out of the programming mode. At this instance, changed parameter is not saved. In fact this is the only way to quit changing parameter and resuming with the old values. On the other hand, pressing MODE key, the parameter is saved and will come into effect.


Up and Dn Keys

Up arrow and down arrow keys increment or decrement particular parameter. Eg. Trip Set point or Alarm Set point

in mode 2. When an upper limit of a parameter is reached, the value will not increment further. Trying to decrement value lower then it's lower limit will restrict the value to the limit rendering the down arrow key ineffective.

In some of the modes, this key does not increment or decrement a value but gives various selections.

In manual mode, it increments or decrements channel number.

Increment or decrement is time specific. Depending on the amount of time, the key is pressed, and the value is incremented or decremented in steps of 1,10,100 &1000.

M Mode Key

Takes you to different parameters. Rollover will occur from last parameter to the first.

ACK Acknowledge Key

In Run Mode, it is used for Acknowledgement & in Program Mode, it is used to return to run mode.

Manual Mode: Up key switches the unit to manual mode when it is in run mode. In manual mode, the display indicates the process value of only selected channel but monitoring of all channels for Alarm set point & Trip Set point goes on continuously. The manually selected channel can be changed by the increment or decrement key. Pressing Ack key some amount of time again, the user can go back to auto run mode.

(Note: - For channel 1 - instead of “C01”, it will display “01” in manual mode and the same holds true for the remaining channels also.)

Calibration Procedure for all Inputs: Calibration is performed on channel 1 and holds true for all remaining channels.

‘RTD’ Input (pt-100) FIRST WAY OF DIP SWITCH 1(SW1) and second TO BE “ON”

Select “RTD” input for channel 1from keyboard.

1) Press Mode key.

2) Press Up or down key until “Zrd CALb” is displayed.

3) Press Mode key.

4) Press Up key to select “YES” for calibration.

5) Feed minimum input (18.50ohm). The counts according to minimum input fed are displayed.

6) Press Mode key, it means value for Zero is saved and “SPd CALb” for span calibration is displayed.

7) Press mode key.


9) Feed maximum input (387.34ohm).The counts according to maximum input fed are displayed.

10) Press Mode key, it means value for Span is saved.

11) Press Acknowledge key or select “Exit” & press Mode key to return to RUN Mode.


‘Thermocouple’ (J, K, E&N) Input. All Dipswitches to be “OFF”

Select input ‘JTC’ from keyboard for channel 1 (for this group, we calibrate with respect to ‘J’ type thermocouple & this calibration holds true for ‘K’, ‘E’ & ‘N’ type also).

1) Press Mode key.


3) Press Mode key.

4) Feed minimum input (-5.43 mv).The counts according to minimum input fed are displayed.


6) Press mode key.


8) Feed maximum input (57.96 mv).The counts according to maximum input fed are displayed.



‘Thermocouple’ (R, S & T) Input All Dipswitches to be “OFF”

Select input ‘RTC’ from keyboard for channel 1 (for this group, we calibrate with respect to ‘R’ type thermocouple & this calibration holds true for ‘S’ & ‘T’ type also).

11) Press Mode key.


13) Press Mode key.

14) Feed minimum input (0.00 mv).The counts according to minimum input fed are displayed.


16) Press mode key.


18) Feed maximum input (21.003 mv).The counts according to maximum input fed are displayed.



‘mA’ (4-20mA) Input SECOND WAY OF DIP SWITCH 1(SW1) TO BE “ON”

FIRST WAY OF DIP SWITCH 1(SW1) TO BE “OFF”

1) Press Mode key.


3) Press Mode key.

4) Feed minimum input (4.00 mA).The counts according to minimum input fed are displayed.


6) Press mode key.



8) Feed maximum input (20.00mA).The counts according to maximum input fed are displayed.



‘Volt’ (1-5 V) Input All Dipswitches (DSW 1, 2) to be OFF. Select “Volt” input for channel 1 from keyboard.

1) Press Mode key.


3) Press Mode key.

4) Feed minimum input (1.00 V).The counts according to minimum input fed are displayed.


6) Press mode key.


8) Feed maximum (5.00 V).The counts according to maximum input fed are displayed.



Preset value at the time of dispatch: This value will also be set automatically if the data in the EEPROM is found corrupted.

Mode 1: General configurations

Name VALUE

Channel Switch Time

Dead-Band

Address (For Modbus)

Mode 2 to 16: Channel parameters (Channel 1 to Channel 8)

Name VALUE

Input type

Decimal Point

Zero range

Span range

Alarm value

Trip value


Trip type

Channel bypass

Group of channel Decimal point displayed in case of mA/Volt input. Name And Function Of Respective Parts On Back Facia:

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DSW1: CH1 to CH4. First way dip switch should be “on” for “rtd” input Second way dip switch should be “on” for “mA” input. All should be “off” for other inputs. DSW2: CH5 to CH8. First way dip switch should be “on” for “rtd” input Second way dip switch should be “on” for “mA” input. All should be “off” for other inputs.. Wiring Connection Diagram and Terminal Details:

Terminals Description

P, N, E Phase, Neutral, Earth

1(+), 2(-), 3(b) Rtd, mA, Volt, T/C, input Ch1









25(NO), 26(C), 27(NC) Group1 Alarm relay (RL1)

28(NO),29(C),30(NC) Group1 Trip relay (RL2)

43(NO),44(C), 45(NC) Group2 Trip relay (RL3)

46(NO),47(C), 48(NC) Group2 Alarm relay (RL4)


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Our Works: Pyrotech Electronics Pvt. Ltd. (Electronics division) F-16A, Road No. 3, M.I.A., Madri, Udaipur, 313003, India Phone : 0091-294-2492121, 2492123, 2493124, 2492125 Fax : 0091-294-2492126 Email : [email protected], [email protected]

Our Marketing Office:

Pyrotech Marketing & Projects Pvt. Ltd. 917-920, International Trade Tower Nehru Palace, New Delhi – 110 029 Phone : 011-26444930 , 41608075 Fax : 011-26443694 Email : [email protected] [email protected]

Our Branch Office:

1. Banglore Email: [email protected] Mobile: 093425 30078

2. Durgapur Email: [email protected] Mobile: 093322 71711

3. Hyderabad Email: [email protected] Mobile: 093913 85939

4. Lucknow Email: [email protected] Mobile: 093352 32330

5. Raipur Email: [email protected] Mobile: 093291 29709

6. Rourkela Email: [email protected] Mobile: 093374 07452

7. Vadodara Email: [email protected] Mobile: 093272 26863

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