Thc Sh-hc30 Manual

8/18/2019 Thc Sh-hc30 Manual

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北京欣斯达特控制技术有限公司

Beijing Flourishing Start Control Technology Co., Ltd

Torch Height Controller for Plasma/Flame CNC Cutting Machine

SH-HC30

Manual

北京欣斯达特

控制技术

有限公司

Beijing Flourishing Start Digital Technology Co., Ltd

北京石景山区八大处高科技园区双园路号号楼.邮编: 100043

No. Shuangyuan Road, Shijingshan District, Beijing, 100043, China

Tel: 010)88909150

Fax: 010)88909271

Website: www.startsh.com


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Contents

1. Preface

2. Overview

3. Installation

4. Quick operation guide

5. Commissioning

6. Operating guide

7. Control panel

8. Troubleshooting

9. Initial positioning

10. Commands between CNC a nd height controller

11. Remote height controller


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3D View of Remote Controller Graphic model of remote

controller

All

rights

reserved

Forbidden to distribute or duplicate any file for the purpose of commercial,

communication or others without particular authorization. Compensation will be

incurred if any clause is violated. All rights belong to Microstep Control

Technology Co., Ltd.

D

is

c

l

a

i

m

e

r

We have made a consistency inspection to the contents of the printed file against the product described.

However, we can’t guarantee absolute accuracy due to the impossibility to eliminate inaccuracycompletely. Nevertheless, we will verify the information in the file regularly and make necessary

amendments in the revised version. Any suggestion for later improvement is greatly appreciated.

Microstep reserves all the rights to make necessary amendments on the basis of technical

improvement.


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Contents

1 Preface ................................................................................................. 1

1.1 Purpose ........................................................................................ 2

1.2 Important Statement.................................. ................................2

1.3 Warning ...................................................................................... 3

1.4 Terms Explanation......................................................................4

1.5 Company Information ............................................................... 5

2 Overview.............................................................................................. 5

2.1 Technical Features ..................................................................... 5

2.2 Main Technical Indicators........................ ………………………….7

3 Installation ...................................................................................... 8

3.1 Mechanical Installation............................. …………………………..8

3.2 Electrical Installation Connection ........................................... 14

3.3 Function Introduction of Volatge Divider Board ………………22

3.4 Dimensions Figure of Volatge Divider Board............................ 25

4 Quick Operation Guide for Capacitance and Arc Voltage Height

Controller .............................................................. …………………. . . . . 26

4.1 Control Operation of Electrical Operation Panel: (External

Switching Mode) ..............................................................................26


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4.2 SH-2002AH/SH-2200H Operation of CNC System Output

Interface (I / O Control Mode) .......................... ……………………….27

4.3 CNC system communication interface is used to complete the

operation (RS232 communication mode) ......... ………………………28

4.4 Operation Flow ........................................................................ 28

4.5 Daily Operation Flow................................ ………………………...29

5 Operating guide................................................................................. 30

5.1 Parameter Setting ..................................... ………………………. 30

5.2 Manual Operation..................................... ………………………...30

5.3 Automatic Operation ............................................................... 31

6 Debugging........................................................... ……………………31

6.1 Initial Debugging of Capacitive Detection……………………32

6.2 Debugging Steps of a Key Height Calibration………………32

7 Controller Panel ................................................................................ 32

7.1 Control Parameters................................... ……………………….33

7.2 Operation Panel ....................................................................... 34

7.3 Display Status Description........................ ………………………..36

8 Troubleshooting ................................................................................38


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9 Description of Initial Location Function....................................................39

9.1 Positioning Mode................................................................................39

9.2 Setting of Positioning Height .............................................................39

9.3 Process ................................................................................................39

9.4 Initial Arc Voltage Collection (Set Value A).....................................39

10 Instruction Functions Related to M of CNC System and Height

Controller……………………………………………………………………..40

10.1 Function M of Direct Control Output Port of CNC System .........41

10.2 Fixed Cycle of Function M .............................................................41

11 Remote height controller .........................................................................44

11.1 Function Introduction.....................................................................44

11.2 Operation Guide..............................................................................45

11.3 Wiring Instructions .........................................................................47

11.4 Installation Dimensions ...............................................................48


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1 Preface Whether in flame cutting mode or plasma cutting mode, it is vital to maintain the stability

of the distance (height) between cutting torch and work piece, for it will directly affect the

cutting speed and the cutting quality.

Fig. 1-1 Model SH-HC30 height controller for flame/plasma cutting torch

1.1 Purpose

Model SH-HC30 height controller for flame/plasma cutting torch is an automatic height

control module integrated with mechanical lifting and electric control features, which is

specially designed for portable flame and plasma cutting machine as another new product

developed by Beijing Microstep Control Technology Co.,Ltd. in the field of industrial automation

control


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Model SH-HC30 height controller for flame/plasma cutting torch is simple and easy to use,

convenient to commission and modest in price. In addition, it insists the sell points of all

Microstep products--good product performance at modest price. It is an ideal accessory to

match welding or cutting equipment.

1.2 Important statement:

In case of any discrepancy between Model SH-HC30 height controller

for flame/plasma cutting torch and the contents of this manual, the

actual product should be referred to. Any amendments of the product or its

accessories are subject to change without prior notice. For updated contents, please

visit our website at http://www.startsh.com/eng

or simply call Beijing Microstep Control Technology Co., Ltd.

Be sure to read the safety warnings and precautions carefully to avoid

any accidents due to incorrect operations.

Please strictly follow the detailed instructions in the manual before

installing and using this machine.

In case that Model SH-HC30 height controller for flame/plasma

cutting torch and/or this manual is illegally used, the user shall be

liable for all the aftermaths and Microstep will take no legal liability,

for it doesn’t represent Microstep’s position.

The safety warnings are used to prevent any damage to human body

or properties.

In case of any quality problem found in using this product, please call

the service center of the manufacturer or authorized agents or

distributors to get service and help.

It’s not allowed to duplicate, distribute or utilize any content of this

manual without a written permi


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who violates shall undertake all the liabilities for the loss.

1.3 Warnings

Please read and strictly comply with the following instructions before operating the product, thus to

assure the designed product control accuracy and prevent any damage and accident.

Installation must be carried out by certified technical personnel with relevant

experiences.

Please thoroughly read the instructions before starting installation.

Make sure the local power supply satisfies the required specifications.

Installation, plugging or unplugging power cord are prohibited when

the power switch is on.

The product should be positioned far away from any heat source if possible.

The controller shell must be grounded well to avoid electric shock or

affecting the controller.

The work piece must be well grounded too and maintain a good connection with

the controller shell for assured accuracy of height control.

Note: If the controller shell and the work piece are not properly grounded, the height controller will not

work normally.

Please handle the product with care and make sure no impact or

shock; otherwise, damage to the product might be incurred. .

Never try to disassemble the product or modify its internal construction;

otherwise, accident or fault might occur.


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easy.

1.4 Terminology Definitions

One-keystroke height calibration: In capacitance height measurement

mode, the specific inductive capacity between the capacitance

detection ring and work piece may affect the accuracy of height

measurement due to temperature, pressure, humidity, gas composition

and many other ambient factors. In addition, the serious non-linear

relationship exists between capacitance value and height value.

Microstep has developed the intelligent program of "one-keystroke

height calibration". Only one keystoke will automatically set the

product based on various ambient factors. And within the range of

3-30mm, high accuracy, high precision and high linearity is possible in

display and control.

High speed zone: When the difference between the actual height and the set

height is relatively big, the cutting head will advance towards the set value at the

highest speed in order to reach the set value the soonest; this travel zone is called

high speed zone.

Speed regulating zone: If the cutting head reaches the set value at a

high speed, severe oscillation may be caused and the height control is

unstable. In order to achieve a smooth transition, the speed regulating

zone is set. This zone is located between the high-speed zone and the

dead zone. In this zone, when it is far away from the set value, the

cutting head will move at a higher speed; otherwise, at a lower speed.

The range value of this zone is adjustable. If it is set too big, the

transition is smooth, but the tracking time is too long; if it is set too

small, the tracking is conducted


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Dead zone: Within a certain height range, the height of the cutting

head will not be adjustable any more. The range is called dead zone. If

the dead-zone range is set too wide, the control precision will be too

low; if it is set too narrow, the cutting head may oscillate up and down

easily. An appropriate value of dead zone will not only guarantee the

control precision but also generate no oscillation.

2. Overview

2.1 Technical Features

Stepper motor instead of conventional DC motor

Model SH-HC30 height controller for flame/plasma cutting torch uses

the proprietary stepper motor control technology of Microstep to

replace the conventional DC motor height control technology, which

makes it faster and smoother in addition to significantly intended

service life.

Directly displaying the height of cutting nozzle in capacitance height

control mode


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The advanced height linear calibration technology makes absolute

height display and control possible when the distance between the

cutting nozzle and work piece is within 3 ~ 30mm in the capacitance

mode under for automatic height control in unit of millimeter and

display accuracy of ± 0.1mm.

Integration of mechanical lifting device and height controller

Detector, controller and drive are highly integrated with adjustable

stroke up to 10cm.

All Digital Technology

Circuit uses SMD technology without any adjustable devices; all

digital control technology ensures high product reliability.

Simple and convenient linearization calibration

The feature of "one-keystroke height calibration" guarantees that in

any circumstances, the user only needs to press one key to calibrate

the absolute height measurement and achieve linear height

measurement.

Applicability in tough environment

The shell uses tamper-proof, waterproof and moisture-proof

aluminum box sealed design, particularly applicable to the severe

environment of high temperature or high electromagnetic interference

from flame cutting or plasma cutting operation.

Various interfaces easy to use.

The interface is simple and easy to control. It is suitable for any flame

cutting and plasma cutting CNC system or using alone.

RS232 communication interfac


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Asynchronous communication function enables connection with CNC

system and facilitates parameter setting, automatic/manual control,

taper angle transition control and data exchange.

2.2 Main Technical Parameters

Power Requirements: DC 24V ± 2 V 3 A

Applicable motor: 17/23 HS series of stepper motors

Manual adjustment range: 0-100 mm

Automatic height control range: 3 -30 mm

Adjusting speed of automatic height control: 3000 mm/min (30 ° slope)

Control precision: ±0.5 mm

Dimensions of box body: (155 × 87 × 71) mm

Operating temperature: -10 to 50

Weight:

Total weight of capacitance height control: 1.990kg

Total weight of arc voltage height control: 1.645kg

Detection system: capacitance height detector and arc voltage height

detector


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3. Installation

3.1 Mechanical Installation

The component names and positions of height controller are shown in Fig. 3-1.

Among them, the connecting components for capacitance detector are only

added in flame cutting operation


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Lift stepper motor

Standard high frequency cable

Detector ring anti-collision device

Operating display panel

Cutting torch holder

Detector ring holder

Flame cutting torch

Detector ring

Fig. 3-1 The positions, names and functions of controller components

6 M6 screw holes in the back of the height controller are used to fix the

box body to the support. Their position and size are shown in Fig. 3-2.


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Note:

1. Make sure the depth of bolts in

six mounting holes during

installation will not affect the

travel.

2. The length of each mounting

bolt beyond the shell of the height

controller internallymust be less

than 8mm, i.e., the bolt length

inserting into the interior of the

height controller shell must not

exceed 8mm.

Fig. 3-2 Mounting position of screw holes in the back of the controller

The right view of the height controller and related installation dimensions are

shown in Fig. 3-3.

The back view of the height controller and related installation dimensions are

shown in Fig. 3-4.


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Fig. 3-3 Right view of the controller


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图3-4 高度控器背面视图

Fig. 3-4 Back view of height controller

The installation diagram of the height controller is shown in Fig. 3-5


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Fig. 3-5 Assembly diagram of height controller


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3.2 Electrical Connection

3.2.1 External Switch Control Mode

The external switch control mode is applicable to both

capacitance height control and arc voltage height control.

K1

Manual/automatic switching

K2

Manual ascendingK3

Manual descending

Ground

Electrical wiring diagram of external switch control

When K1 is off, the height controller is in manual mode;

When K1 is on, the height controller is in automatic mode.

When K1 is off, K2 and K3 are enabled.

When K1 is on, K2 and K3 are disabled.

3.2.2 CNC System Input/Output Control Mode (I/O control)

Electrical connection of capacitance-detection height controller

The electrical connection of capacitance-detection height controller is shown in Fig.

3-6.

The high-frequency cables and plugs are special parts. The high-frequency cables

can be provided up to1000mm according to different requirements.

The cable connection between height controller (15-pin connector) and CNC system

(25-pin connector) should be made by the user. The connection is shown in Fig. 3-7.

For the detailed pin definition of 15-pin and 25-pin, see Table 3-1 and Table 3-2.


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15

15-pin plug

BNC high-frequency cable

Back view of CNC system

Height

controller

25-pin connector

Fig.3-6 Electrical wiring diagram of capacitance height controller

Note: The diameters of 24 V power cord and ground wire should be larger than 0.75 mm2.

Manual/automatic switching

Manual ascending

Manual descending

Ground


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Table 3-1 Pin definitions of 25-pin connector of CNC system for the height control system

S/N AttributeDescription

5 Output Manual/automatic selective signal

6 Power

Supply

24V ground for power supply of height

controller

7 Output Manual lifting signal to drive cutting

torch up

12, 13 Power

Supply

24 V positive for power supply of height

controller

19 Output Manual descending signal to drive

cutting torch down

24, 25 Power

Supply

24 V positive for power supply of height

controller

Note: The pins whose serial numbers are not listed of the 25-pin plugs of CNC

system will not be used.

Table 3-2 Pin definition of 15-pin connector of height Controller

No.

Attribute

Description

Remarks

1 Serial port for common use

232-COM

2 Serial port for Receiving 232-RXD

3 Serial port for transmiting 232-TXD

4 Input

Signal

Arc voltage (height of cutting

torch) signal

5

Signal ground

Arc vol


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7、14 Power supply 24 V positive for power supply

of height controller

8、15 Power supply 24 V ground for power supply

of height controller

10

Input

manual/automatic selectivesignal

12 Input Manual ascending signal for

driving the cutting torch up

13 Input Manual descending signal for

driving the cutting torch down

Note: The pins whose serial numbers are not listed of the 15-pin plugs of the

CNC system will not be used.


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Electrical connection of arc voltage detection-type height controller

The electrical connection of arc voltage detection-type height controller is shown in Fig.

3-8.

The cable connections among height controller (15-pin connector), CNC system (25-pin

connector) and voltage divider board (9-pin connector) should be made by the user.

For the pin definitions of 15-pin, 25-pin connector and 9-pin connector, see Table 3-1,

Table 3-2 and Table 3-3

Height

Plasma Power Supply

Voltage divider

board

The back panel of CNC system

Fig. 3-8 Electrical wiring diagram of arc voltage height controller

Table 3-3 Pin definitions of 9-pin connector for volta


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S/N Attribute Description

2 Power

supply

24V ground for power supply of height controller

5 Power

supply 24V ground for power supply of height controller

6 Output Arc voltage signal serving as height signal of the plasma

cutting nozzle

9 Output 24V positive for power supply of height controller

Note: The pins whose serial numbers are not listed will not be used.

Connecting to voltage divider board

Connecting to torch height controller Connecting to CNC system

9-pin connector of voltage divider board

Arc voltage signal after voltage dividing

Automatic start

Arc voltage signal after voltage dividing

Manual ascending

Manual descending

24V Ground

15-pin connector of height controller 25-pin connector of CNC system


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Fig. 3-9 Wiring diagram of arc voltage height controller, voltage divider board and CNC system

Note: The wire diameters of 24V power cord and of ground wire should be larger than 0.5 square

millimeter.


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分压板 9芯接头

21

25-pin pl ug

print.com.cn

The electrical connection of height controller when both arc voltage detection

mode and capacitance detection mode are required to use.

Arc voltage

Arc voltage

15-pin pl ug

High-frequency cabl e

Heigh

Back view of CNC

Capacitance detecting ring


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24V Ground

Automatic start

Arc voltage signal Manual ascending

Manual descending

24V Ground

This figure should be kept on standby – it illustrates the automatic connection method

when both arc voltage mode and capacitance mode are required to use.

3.2.3 Communication interface control mode of CNC system (RS232 control)

The software debugging for the communication interface control mode of

CNC system is in process.

3.3 Functional description of voltage divider board

The voltage divider board is a functional module designed to reduce the voltage of

plasma cutting torch after arc starting in a certain proportion and separate and

convert it to the low-voltage signal reflecting the

piece. It is the indispensable accessory in the mo


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plasma cutting operation. The voltage dividing ratio of the voltage divider board in

standard configuration is 50: 1.

The various interfaces of the voltage divider board are illustrated in Fig. 3-10.

J3 AC power, connecting device

AC220V power supply

J2 arc voltage input, connecting to the

arc voltage terminal of plasma power

J1 arc voltage output of voltage dividerboar d,

connecting to height contr oller and CNC system

Fig. 3-10 Interface description of voltage divider board

The pin definitions of interfaces are shown in Table 3-4, Table 3-5 and Table 3-6.

Table 3-4 Pin definitions of J1 connector

S/N Attribute Description

2 Power

supply 24V ground for power supply of height controller

5 Power

supply 24V earth for power supply of height controller

6 Output Arc voltage signal serving as the height signal of

plasma cutting nozzle

9

Power

supply

24V positive for po


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Note: The pins without pin numbers will not be used.


No. Attribute Description

1 Power

supply Ground

2 Input Plasma arc voltage positive terminal

(connecting to the clip of steel plate)

3 Input Plasma arc voltage negative terminal (arc

voltage output)

Note: Push the orange button inwards and insert the stripped cable into the wiring hole

and then release.


No. Attribute Description

1 Power

supply AC220V±10%

2 Power

supply AC220V±10%

The voltage divider board may choose installation position as required,

but note should be taken J1 interface is for low-voltage signal and J2

is for high-voltage signal. In order to prevent low-voltage signal from

any interference of high-voltage and high-frequency signals and

improve the system stability, the wirings of J1 and J2 should becarried out separately.


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3.4 Dimensional drawing of voltage divider board


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Desce

Descen

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4. Quick Operation Guide of Height Controller in

Capacitance and Arc Voltage Modes

4.1 Control operation of electrical operation panel: (external switch mode)

For the wiring of height controller in capacitance mode, see Section 3.2 -- "Electrical

Connection"

For the wiring of height controller in arc voltage mode, see Section 3.3-- "Electrical

Connection"

The operation procedure is as follows: Set the automatic/manual control switch to manual mode

Set the

automatic/manual

control switch to

manual mode

Automatic

Manual

Cutting torch control

割枪控制

升 nd

2.Adjust the ascend/descend switch of the cutting to rch as needed.

Automatic


割枪控制 Ascend

Adjusts the

ascend/descend switch to

lift the cutting torch Manual

Adjusts the

ascend/descend switch to

lower the cutting torch.

Automatic

Manual

Cutting torch control 割枪

Ascend d

3. Set the automatic/manual control switch to

automatic mode

Automatic


割枪控制

Ascend Set the automatic/manual

control switch to

automatic mode

Manual


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Fig. 4-1 Operation flow of initial use or when detection mode is intended to switch

4.5 Routine Operation Flow

Flow starts

Power on CNC system

and height controller

auto-detection of "manual

/auto" mode

Yes No Manual?

When the manualascending signal is atlow level, the cuttingtorch moves up.

The cutting torch adjusts itsheight automatically as per the set value of height.

When the manualdescending signal is at lowlevel, the cutting torchmoves down

Press the key “Up” on theoperation panel once to have theset value of height increased by 1

Press the key “Up” on theoperation panel once to havethe set value of height increasedby 1

Press the key “Down” on theoperation panel once to havethe set value of heightdecreased by 1

Press the key “Down” on the

operation panel once to havethe set value of height

decreased by 1

LCD indicates the actualheight

LCD indicates the set

value of height

Fig. 4-2 Routine Operation Flow


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5 Operating Guide

The height controller provides three modes after powered on: manual,

automatic and parameter editing modes.

5.1 Parameter Setting

In manual or automatic mode, press the key “Enter” and hold it for some time, the

height controller will enter parameter editing mode. Click the key “Enter” in the

editing mode, the height controller will return to manual or automatic mode, which

depends on the mode before entering parameter editing mode.

In editing mode, press the Function key to switch the parameters to be edited

circularly. The switching sequence is: H (upper limit value) → L (lower limit value)→

A (set value of height) → E (dead-zone value) → d (speed regulating zone value) → C

(detector mode selection) → b (non-board reduction parameters) → H (upper limit

value). (See 7.3)

If the up arrow is pressed once, the selected parameter value will increase by 1 (for theselective range of parameter values, see 7.1).

If the down arrow is pressed once, the selected parameter value will decrease by 1 (for

the selective range of parameter values, see 7.1).

5.2 Manual Operation

Manual/automatic signals: at high level, the controller is in manual mode.

Manual ascending signal: at high level, invalid; at low level, the cutting torch moves up.

Manual descending signal: at high level, invalid; at low level, the cutting torch moves

down.

If the key "↑" on the operation panel is pressed, the cutting head will move up.

If the key "↓" on the operation panel is pressed, the cutting torch will move down.

Modify the corresponding set value of height when the height controller is ascending or

descending in manual mode.


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5.3 Automatic Operation

Manual/automatic signal: at low level, the controller is in automatic mode.

In automatic mode, the height of the cutting torch is controlled automatically

according to the set height by the user.

If press the key "↑" on the operation panel once, the set value of height will increase by

1; if press and hold it down, the set value of height will increase continuously in step of

1.

If press the key“↓” on the operation panel once, the set value of height will decrease by

1; If press and hold it down, the set value of height will decrease continuously in step of

1.

6. Commissioning 6.1 Initial commissioning of height controller in capacitance detection mode

The height measurement in capacitance mode is to measure the distance between the

capacitance detection ring and work piece or the height through detecting the capacitance

between them thereby to achieve height control.

When the capacitance-mode height measurement is adopted, the specific inductive capacity

(SIC) between the capacitance detection ring and the work piece may affect the height

measurement accuracy due to such ambient factors as temperature, pressure, humidity,

gas composition and son on. In addition, there is serious non-linear relationship between

the capacitance value and the height value. Microstep has developed the intelligent

program of "one-keystroke height calibration ". Only one key needs to be pressed locally

to calibrate the height controller based on various ambient factors automatically; in the

meantime, the display and control in high accuracy, high precision and high linearity will

be achieved within 3-30mm.

In the following cases, height calibration is required.

1. The height controller is used for the first time;

2. The ambient environment of height controller cha


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3. The actual height of capacitance detection ring is not consistent with its display height

value.

Since "one-keystroke height calibration" is so simple and it only needs to press one key,

user may calibrate the height controller at any time.

6.2 Commissioning procedure of one-keystroke height calibration

Check and make sure the bottom of capacitance detection ring is parallel to the work

piece.

Power on the height controller of cutting torch.

Set the detector mode to capacitance detector mode (for the method, see 7.3).

In manual mode, adjust the cutting nozzle to approach work piece to an appropriate

position.

Press and hold the "down arrow" key on the height control panel for about two

seconds, the "one-keystroke height calibration” process will start automatically as

follows:

1. Move up to somewhere about 30mm high in five steps;

2. And then move down to about 10mm away from the work piece and stop;

3. All the calibration is completed.

By this step, the initial commissioning is finished.

For details about how to perform height control operation, see 5.2 and 5.3.

7 Controller Panel

There are LCD display and keypads on the height controller panel.

Through the panel operations, user


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monitor operation status.

7.1 Control Parameters

Set value (A: Accuracy Height): the expected value of the distance (height) between the

cutting nozzle and the work piece, which is set by user. For the set range and factory

default value, see Table 7-1.

Dead zone value (E: Error Area): When the actual height is A ± E, the height of cutting

torch will not be adjustable any more (see 1.4). For the set range and factory default

value, see Table 7-1

Speed regulating zone (d: Down Speed Area): the two speed regulating zones are

between A-E-d and A-E as well as between A + E and A + E + d (see 1.4). For the set

range and factory default value, see Table 7-1.

High limit point (H: High Limit): When the cutting torch position is higher than thisset value, an alarm will pop up and the cutting torch can not move up further. For the

set range and default value, see Table 7-1.

Low limit point (L: Low Limit): When the cutting torch is lower than this set value, an

alarm will pop up and the cutting torch can not move down further. For the set range

and factory default value, see Table 7-1.

Selection of detector (C: capacitance): 0 is for arc voltage detection and 1 is for

capacitive detection. For the set range and factory default value, see Table 7-1.

No board drop parameter (b):

In capacitive detection mode, when the detected height is higher than value b, the

cutting torch will descending stop descending; when the height becomes lower than

value b, automatic height control will be enabled again;

In arc voltage detection mode, when cutting torch is moving down manually and

encounters the zero-point signal, the cutting torch will move up to b mm. For the set

range and factory default value, see Table 7-1.


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Table 7-1 Setting range

H L A E d C b

Set range

（V） 100～300 10～40 20～200V 0～20 0～100

0～1 0～50

Arc voltage

Factory

default

value（V）

280 10 80 3 5 1 5

Set range

（mm）

20.0～30.0 3.0～10.0 6.0～25.0 0.0～4.0

0.0～4.0

0～1

2.0～

30.0

Capacitance Factory

default

value

25.0 4.0 10.0 0. 3 2. 0 1 25.0

7.2 Operation Panel

The operation panel is illustrated in Fig. 7-1.


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LCD

Up Arrow

Enter Key

Function

Key

Down Arrow

图7-1 Operate Panel

Enter key: To enter or exit the editing mode.

Function key: in manual mode, to perform the function of “one-keystroke

height calibration”; in editing mode, switch the active parameters to be

edited.

Up arrow: in manual/automatic mode, to have the set height value increased

by 1; in the editing mode, to have the active parameter decreased by 1.

Down arrow: in manual/automatic mode, to have the set height value decreased

by 1; in the editing mode, to have the active parameter decreased by 1.

LCD: the display functions are as follows:

1. Manual operation mode: to display detector mode, operation mode

and height set value.

2. Automatic operation m


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and the current height value.

3. Parameter editing mode: to display the parameter names being

edited and the corresponding parameter values.

7.3 Description of Display

Manual operation mode: The first digit indicates the detection mode;

the second one indicates the operation state and the last 3 digits

indicate the set value of height.

The first digit: C: capacitance detection mode, U: arc voltage detection

mode.

The second digit: no operation, flashing between and ; the formerstands for manual ascending and the latter stands for manual descending:

The last 3 digits: in capacitance mode, it is a decimal in mm; in arc voltage

mode, it is an integer in V.

Automatic operation mode: The first digit indicates the detection mode

(the same as shown above); the second one indicates the operation

state and the last 3 digits indicate the set value of height (the same as

shown above). The second digit is particularly described as follows:

When is fixed, it indicates the cutting torch is moving up

at high speed.

When is flashing, it indicates the cutting torch is moving

up at the a regulated speed.

When is fixed, it indicates the cutting torch is moving down

at high speed.

When is flashing, it indicates the cutting torch is moving

down at a regulated speed.

When is flashing, it indicates the cutting torch arrives the

expected place.


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When the last 3 digits are and the height value flashes,

it indicates anupper-limit alarm.

When the last 3 digits are and the height value flashes, it

indicates a lower-limit alarm.

When the last 4 digits are , it indicates the upper limit

position is reached.

When the last 4 digits are , it indicates the lower limit

position is reached.

Parameter editing mode: The first digit indicates the parameter name;

the second one indicates the equal sign ; the last 3 flashing digits

indicate the parameter value(In capacitance mode, it is a decimal

accurate to 0.1 mm; in arc voltage mode, it is a integer in V. The first

digit is particularly described as follows:

H: the upper limit value. When the height of cutting torch is

larger than this value, an upper-limit alarm will be triggered.

In this case, the cutting torch can only move down.

L: lower limit value. When the height is lower than this value,

it is a lower-limit alarm will be activated. In this case, the

cutting torch can only move up.

A: the set value of height; in automatic mode, this value is

used as the given value for automatic height adjustment.

E: Dead zone value (see 7.1).

D: Speed regulating zone value (see 7.1).

C: selection of detector mode (see 7.1).

b: No board descending parameter value (see 7.1)


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8 Troubleshooting

For the common faults, inspection methods and corrective measures see

Table 8-1.

Table 8-1

Fault Inspection items

Corrective measures

Powered on or not?

Power it on

the voltage of power supply

is normal or not

Check the power

supply

Motor does

not work

motor is overloaded or not Reduce load

No display Check the power supply Power on

Upper limit

alarm

The upper limit value is

exceeded

Check the upper limit

switch

Lower limit

alarm

The lower limit value is

exceeded

Check the lower limit

switch

Instable signal

the work piece is grounded

properly or not Ground it firmly

Inaccurate

height

Operating environment

changed

Run “one-keystoke

height calibration”

Vibrate wildly

Speed reduction zone value is

too small

Increase the speed

reduction zone value d

Too slow in

tracking

Speed reduction zone value is

too big

Reduce the speed

reduction zone value d

Slight

vibration Dead zone value is too small

Increase the dead zone

value E

Too low

accuracy Dead zone value is too big

Reduce the dead zone

value E


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initial use is because the arc column voltage may not the same for the

plasma power supply of different manufacturers even the cutting

operation is going on in the same environment. Collect the test results

for parameter A (see control parameters in 7.1). If the value of

parameter A has never been tested and the set value is smaller than

the actual voltage used in plasma cutting operation, then in automatic

cutting mode the plasma cutting torch will move down quickly until it

knocks the workpiece; otherwise, it will move up all the way until the

arc breaks.

For an unfamiliar new plasma power supply to be used with the height

controller for the first time, arc voltage test must be made for this

plasma power supply. As for standard plasma power supply, the

"cutting speed chart" in the instruction manual attached to the

plasma power supply should be referred to.

Simple test method:

Manually adjust the distance between the cutting torch and work

piece to an appropriate value according to the power specifications. In

the manual mode of plasma, manually control the height controller to

start arcing perforation. After perforation is completed, move the

cutting torch through the CNC system to perform actual cutting

operation; at this moment, the value indicated on the digital display of

the height controller is the actual arc voltage of the plasma power

supply in the current environment.


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10 M Commands between CNC System and

Height Controller

10.1 M Commands from CNC System for Direct Control of Output Port

M14/M15 On/off switch for ascending of cutting torch, M14 (on), M15 (off)

M16/M17 On/off switch for descending of cutting torch, M16 (on), M17 (off)

M38/M39 automatic/manual switch of height controller M38 (auto) M39 (manual)

10.2 M Commands for Routine Cycles

M07 fixed perforation cycle

The sequence of flame cutting operation is as follows:

M07

1. If the gas (acetylene) valve is not opened yet, then open it and start ignition;

2. The cutting torch descends (the descending time delay of cutting torch starts, see

M71);

3. Open the preheating oxygen valve to start the preheating delay. If the preheating

time is not enough, press the key【pause】, the preheating time will extend to 150

seconds automatically. If the preheating is completed before the time delay is up, press

the key【start】to end the preheating delay; in the mean time, the new preheating time

will be saved automatically in the preheating delay parameter;

4. The cutting torch ascends(the ascending time delay of cutting torch for perforation

starts, see M72);

5. Open the cutting oxygen valve (M12), perforation delay time starts. At the end of

the delay time, the cutting torch will descend (the descending time delay of cutting

torch for perforation starts, see M73);

6. Turn on the height controller (M38) and start the subsequent procedures..

The sequence of plasma cutting operation


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3. The cutting torch descends (M73)(no this action in

M07

1. The cutting torch descends (the descending time delay of the descend cutting torch

starts, see M71);

2. If the selected perforation position is valid, then the cutting torch will descend until it

hits the lower limit switch. Then the cutting torch will ascend until the perforation

positioning delay ends;

3.Turn on the starting arc switch;

4. Detect the signal of "arc voltage", if the arc voltage detection is set as 0 in parameter

settings (no detection), the arc voltage will not be detected. If arc starting succeeds, the

perforation delay will start (seconds)

5. Turn on the height controller (M38) to start the subsequent procedures.

M08 Fixed shut-off cycle of cutting operation

The shut-off sequence of flame cutting operation is as follows:

M08

1. Close the cutting oxygen valve (M13);

2. Turn off the height controller (M39);

3. The cutting torch ascends (M70);

The shut-off sequence of plasma cutting operation is as follows:

M08

1. Turn off the arc voltage switch;

2. Turn off the height controller (M39);

3. The cutting torch ascends (M70).

M50 perforation action:

1. The cutting torch ascends (M72)(no this action in plasma mode);

2. Open the cutting oxygen valve in flame mode (M12); or initiate starting arc in plasma

mode and detect the signal of "successful arc voltage


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To position the cutting torch in plasma mode, first le

4. Turn on the height controller (M38)

M70 Fixed ascending cycle of cutting torch:

It is used to lift the cutting torch when a cycle starts and after one cutting cycle is completed,

the so that the cutting torch can move to next cutting position quickly.

Operation sequence: turn on the ascending switch of the cutting torch (M14); start the

ascending delay of cutting torch; turn off the ascending switch of cutting torch (M15).

M71 Fixed descending cycle of cutting torch:

It is used before a perforation operation. Its role is contrary to M70, but the value is smaller

because descending is faster than ascending due to the action of gravity descend.

Operation sequence: turn on the descending switch of cutting torch (M16); start the

descending delay of cutting torch; turn off the descending switch of cutting torch (M17).

M72 Ascending cycle of cutting torch for perforation:

It is used at the end of preheating to lift the cutting torch a little bit so as to avoid anysprayed steel slag from blocking the nuzzle of the cutting torch when the cutting oxygen

valve is opened.

Operation sequence: turn on the ascending switch of cutting torch (M14); start the

ascending delay of cutting torch for perforation; turn off the ascending switch of cutting

torch(M15).

M73 Descending cycle of cutting torch for perforation:

It is used at the end of preheating. After M72 is executed and the cutting oxygen valve is

opened, the cutting torch is located in cutting position. It is the reverse action of M72, but

the value is smaller because descending is faster than ascending due to the action of gravity.

Operation sequence: turn on the switch of cutting torch (M16); start the descending delay

of cutting torch for perforation; turn off the descending switch of cutting torch (M17).

M75 Positioning time delay of cutting torch:


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it hits the lower limit switch (see the input port XXW 8), the cutting torch will stop

descending(M17). Then, the cutting torch will ascend (M14) until the positioning delay of

cutting torch is up (M15);

11 Remote Height Controller

In order to let user stay away from hazardous cutting site when controlling the cutting

operation, and make the use in an easier and, simpler way, a dedicated remote controller is

provided for user, as shown in Fig. X-1.

Fig. X-1 Exterior view of remote height controller

The remote height controller uses computer-based design and support communication the

master height controller via RS232 port. The adjustment of the height and the sensitivity

adopts simple knob design, which endues it the operation conveniences of analog circuit

and the accuracy and reliability of digital circuit.

11.1 Function Introduction


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3 indicator lights.

Power: when the light is on, it is in power-on state.

Manual: when the light is on, it is in manual operation mode; at the

same time, the automatic indicator light is off.

Automatic: when the light is on, it is in automatic operation mode, at

the same time, the manual indicator light is off.

3 buttons.

Manual/ automatic: switching between manual and automatic modes.

Ascend: the cutting torch ascends manually.

Descend: the cutting torch descends manually.

2 knobs, as shown in Fig. X-2.

Height: in automatic mode, the height of cutting torch is adjusted.

Sensitivity: in automatic mode, the control sensitivity of the cutting torch is

adjusted.

11.2 Operation Guide

When it is powered on, the controller will enter manual operation

mode and the indicator light "


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indicator light "Automatic” stays off. At this time, if the height of the

cutting torch needs to be adjusted, the buttons of "Ascend" or

"Descend" may be pressed as needed. When the button “Ascend” is

pressed and held, the cutting torch will keep ascending until the

button is released. In the similar way, when the button of "Descend" is

pressed and held, the cutting torch will keep descending until the

button is released.

When automatic height control is needed, press the button of "Manual

/Auto", the light of "Manual" will turn off when the light of "Auto" is

on, which indicates the height controller enters automatic control

mode. In this mode, the height of the cutting torch is adjusted

according to the set height value automatically.

Note: Two external control methods are adopted for the height

controller, namely, local switch control method and remote control

method. For this system, if two external control methods are used

simultaneously, only when both methods are in automatic control

mode, the height controller will enter automatic control mode;

otherwise, both are in manual control mode.

If the height does not meet the requirements, turn the knob of

"Height" to set. 0% is the lowest and100% is the highest.

If the adjustment accuracy is unsatisfactory, user can turn the knob of

"Sensitivity" to a lower position (towards 0%) to improve the

sensitivity, but it should not be set too low; otherwise, vibration may

occur to the cutting torch. When vibration occurs, turn the knob of

"sensitivity" to a higher position (towards 100%) until the vibration is

gone.


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4 5

4 8 4 8

mm

11.4 Installation Dimensions

96X48mm

12

68

96mm

Documents

Thc Sh-hc30 Manual