Inverter machine use plasma cutting machine Operation Manualen.hwayuan.com/upload/2015-10-28/39664f57-cd90-478b-8966-239eb3718271.… · Inverter machine use plasma cutting machine

B1-1411

LG-125HA

Inverter machine use plasma cutting machine

Operation Manual

OPERATOR’S MANUAL

(PLEASE READ IT CAREFULLY BEFORE OPERATION)

Safety Depends on You

HUAYUAN arc welding and cutting equipments are designed and built with ample safety consideration. However,

proper installing and operating can ensure your safety.

DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT CASUALLY WITHOUT READING THIS MANUAL

THROUGHOUT.

SPECIAL NOTES (VERY IMPORTANT):

1. Pay attention to avoiding the machine falling down when it is placed on the gradient

ground.

2. It is forbidden to unfreeze the pipeline by the cutter.

3. The shield rank of this series of cutter is IP21S, so working in rain is not suitable.

4．The cutter has external static characteristic with rated duty cycle 100%, which means the

machine can work continuously at the rated cutting current. The machine has the function of

thermal protection. When the internal temperature exceeds a set temperature, thermal

protection moves on and the abnormity indicator lamp on the panel turns ON, then there is

no output in cutter. The machine can become normal and work only after the internal

temperature drops down and the abnormity indicator lamp on the panel turns OFF.

Purchase Date：

Serial Number：

Machine Model：

Purchase Place：

Cautions Arc and arc rays can hurt.

All performing welding workers ought to have health qualification from the authority organizationto prevent you and others from arc radiation and burn. It should be prevented for children to enterinto dangerous area as well.

Be careful reading the following important items and the welder safety byelaw from the authorityorganization. Be sure that qualified professionals perform all installation, maintenances and repairprocedures.

1 Electric shock: The welding circuits are not insulated when welding. If you touchthe two output electrodes of the machine with your bare skin at the same time, itwill lead to electric shock, sometimes even fatal dangers. Users need to follow the

items below to avoid electric shocks:

If possible, lay some insulating materials, which are dry and large enough, in your workingfield. Otherwise, use the automatic or semiautomatic welding machine, DC welding machineas possible as you can.

Components in the automatic and semiautomatic welding machine such as the welding wirereel, feed wheel, contact tip and welding head are all electric components. .

Always be sure the machine has been connected perfectly to the work piece with the work

cables and should be as close as possible to the working area.

The work piece should be grounded perfectly.

Make sure that the insulating material of the electrode holder, the grounding clamp, thewelding cable and the welding head are not affected by damp, mildewed or spoilt, and bereplaced momentarily.

Never dip the electrode in water for cooling.

Never touch electric components of two welding machines at the same time, because thisvoltage is supposed to be two times of welding voltage while the grounding mode is not clear.

While working high above the ground or other places having the risk of falling, please be sureto wear safety belt to avoid losing balance caused by electric shock.

2 Arc: Use an arc welding mask to protect your eyes and skin from sparks and therays of the arc, pay special attention to the filter glass, which must be conformableto the national standard.

Use clothing made from durable flame-resistant material or sailcloth to protect your skin fromhurting by the arc rays.

Remind other nearby personnel before working lest arc rays hurt them by accident.

3 Fumes and Gases: Welding may produce fumes and gases hazardous to health.Avoid breathing these fumes and gases. While working in limited room, use enoughventilation and/or exhaust to keep fumes and gases away from the breathing zone,

or use the respirator. Do not weld at the same time when using of degreasing, cleaning orspraying operations. The heat and rays of the arc can react with these gases to form phosgene, ahighly toxic gas,

Some protective gases used in welding might displace the oxygen in the air, and can lead tohurt or even death.

Read and understand the manufacturer’s instructions for this equipment, and validate thehealth certification of consumptive materials, make sure they are innocuous.

4 Spatter: Spatter can cause fire or explosion.

Remove fire hazards from the welding area. Remember that spatter fromwelding can easily go through small cracks and touch fire hazards. Protect all

kinds of lines going though welding area, including hydraulic lines in the wild.

Where compressed gases are to be used in the field, special precautions should be used toprevent explosion.

When welding stops, make certain that no live part is touching the work piece or the workstage. Accidental contact can create a fire hazard.

Do not weld containers or lines, which are not proved to be innocuous.

It is very dangerous to heat, cut or weld tanks or containers at entry holes. Does not startwork until the proper steps have been taken to insure that there is no flammable or toxic gas.

Spatter might cause burn. Wear leather gloves, heavy shirt, cuffless trousers, high shoes and acap over your hair to prevent from burning by spatter. Wear the ear shield when performingsideways or face up welding. Always wear safety glasses with side shields when being in awelding area.

The welding cables should be as close to the welding area as possible, and the short, thebetter. Avoid welding cables going through the building framework, lifting chains, AC or DCcables of other welding machines and appliances. The welding current is strong enough todamage them while having short circuit with them.

5 Cylinder: Damage of it might cause explosion.

Make sure that the gas in the storage cylinder is qualified for welding, and thedecompression flow-meter, the adapter and the pipe are all in good condition.

Make sure that the installation of cylinder is by the wall and bundled tightly by a chain.

Be sure to put the cylinder in the working space with no crash or shake, and far from weldingarea.

It is forbidden to touch cylinder with the welding clamp or the work cables.

Avoid facing the cylinder while installing the decompression flow-meter or the gasometer.

When not working, please tighten the valve.

6 Power: (For electrically powered welding and cutting equipment) Turn off inputpower before installation, maintenances and repair, so that avoid accident.

HUAYUAN welding equipment is Ι class safeguard equipment; please install theequipment in accordance with the manufacturer’s recommendations by specific persons.

Ground the equipment perfectly in accordance with the manufacturer’s recommendations.

7 Power:(For engine driven welding and cutting equipment)

Work in ventilated place or outdoors.

Do not add fuel near to fire or during engine starting or welding. When notworking, add fuel after engine is cooling down; otherwise, the evaporation of hotfuel would result in dangers. Do not splash fuel out of the fuel tank, and do not

start the engine until complete evaporation of the outside fuel.

Make sure that all the safeguard equipments, machine cover and devices are allin a good condition. Be sure that arms, clothes and all the tools do not touch allthe moving and rotating components including V belt, gear and fan etc.

Sometimes having to dismantle some parts of the device during maintenance, but must keepsafety awareness strongly every time.

Do not put your hand close to fans and do not move the brake handle while operating.

Please remove the connection between the engine and the welding equipment to avoidsudden starting during maintenances.

When engine is hot, it is forbidden to open the airtight cover of the radiator water tank toavoid hurt by the hot vapor.

8 Electromagnetic: Welding current going though any area can generate electromagnetic, as wellas the welding equipment itself.

Electromagnetic would affect cardiac pacemaker, the cardiac pacemaker usersshould consult one’s doctor first.

The effect of electromagnetic to one’s health is not confirmed, so it might have some negativeeffect to one’s health.

Welders may use following method to reduce the hazardous of electromagnetic:

a. Bundle the cable connected to the work piece and the welding cable together.

b. Do not enwind partially or entirely your body with the cable.

c. Do not place yourself between the welding cable and the ground (work piece) cable, if thewelding cable is by your left side, then the ground cable should be by your left side too.

d. The Welding cable and the ground cable are as short as possible.

e. Do not work near to the welding power source.

9 Lift Equipment: carton or wooden boxes package the welding machines suppliedby HUAYUAN. There is no lifting equipment in its wrapper. Users can move it to theprospective area by a fork-lift truck, and then open the box.

If having rings, the machine can be transited using rings. While HUAYUANWelding Machine Manufacture reminds users, there is possible risk to damagethe welding machine. It is better to push the welding machine moving in use of itsrollers unless special situations.

Be sure that the appurtenances are all removed off when lifting.

When lifting, make sure that there is no person below the welding machine, andremind people passing by at any moment.

Do not move the hoist too fast.

10 Noise: HUAYUANWelding Machine Manufacture reminds users: Noise beyondthe limit (over 80 db) can cause injury to vision, heart and audition depending ononeself. Please consult local medical institution. Use the equipment with doctor’s

permission would help to keeping healthy.

Contents

一. Summary ……………………………………………….......................................………………………… 1

1、 Model Instruction…………………………...................……………………………………… 1

2、 Features……………………………………………............................………………………… 1

3、 Application………………………………………........................……………………………… 1

4、 Symbol Instruction……………………………..................…………………………………… 1

二. Operation Environment ……………………………………............................………………………… 3

三. Specification and Parameter ………………………………...............…………………………………… 3

1. Main technical parameter………………………………............…………………………… 3

2. Plasma air requirement………………………………………...................………………… 4

3. Static External Characteristic Curve………………………………………………………… 4

四. Panel and Functions………………………………………………………..............................…………… 4

五. System Constitute ……………………………………………................................……………………… 6

1. Some Necessary Equipment Of Cutting…………………………………………………… 6

2. The Cutting System Connections………………………........……………………………… 6

六. Installation and Operation …………………………………………………….....................…………… 7

1. Flitting and Lifting……………………………………………….....................……………… 7

2. Installation and Connections………………………………….....…………………………… 7

3. Usage………………………………………………………......................................……… 9

七. Working Principal…………………………………………………..............................…………………… 9

List of some common Components……………..……………………................……………… 10

八. Protection Instruction……………………………………………….....................…..............……… 11

1. Pressure Protection………………………………….................…………………………… 11

2. Over-heating Protection………………………………..........……………………………… 11

3. Under-voltage Protection……………………………........………………………………… 11

十. Maintenance ………………………………………………………........................................………… 11

十一. Trouble shooting and Repairing ……………………..............………………………………………… 11

十二. Accessories………………………………………………..........................................……………………13

十三. Attached Figures …………………………………….............................………………………………… 14

Chengdu Huayuan Electric Equipment Co.,Ltd

LG-125HA machine use plasma cutting machine

1

一、 Summary

1. Model Instruction

L G - 125 HA

2. Features

This type is especially used on CNC cutting tools and cutting robots； It’s inverter type with light weight; The cutting current can be accurately preset; The high frequency arc pilot device is taken out of the machine, which avoid

disturb to the control system; Expanded metal cutting function, which is specially suitable for automatic

machine cutting; Stable cutting current, immunity to the voltage fluctuation; 100% rated duty cycle, which ensures the machine can work at the maximum

current without stopping. Protection function of over-voltage,low-voltage and overload.

3. Applications It’s used for cutting carbon steel,alloy steel, nonferrous metals and so on;

4. Symbol instructionsThere are below symbols on this machine.

Read themanual

Gas output

Voltage input Negative pole

Air pressure voltage input

Over-heating Voltage output

Product Classification Code

Rated cutting current

Cutting

Plasma cutting machine



2

Voltage inputabnormal

Power on

Cutting Power off

Gas checkingGroundingterminal

Currentadjusting

Gas input

Cutting groundcable

Gas/electricityoutput

Controllingsignal

Guiding arc

Expandedmetal cutting

Plate metalcutting



3

二、 Operation Environment

To get a good cutting performance, please operate this machine as

below environmental requirement

1. Please use the machine in a clear place without any of dust, corrosive gas andinflammables and explosives; Do not use it in open air and rain;

2. Required air relative humidity should ≤90％(at 20℃)，40℃≤50％(at 40℃)；3. Environment temperature range should be at-10℃～40℃;4. Keep the machine away from the wall of some other closure things at least 30cm, two

machines distance at least 30cm.5. Use it under altitude lower than 1000m.

三、 Specifications and parameter

1. Main technical parameters

Name Unit ParameterInput voltage V/Hz 3～380V±15% 50/60 Hz

Rated input voltage V/Hz 3～380V 50/60 HzRated input current A 36.7Rated input power KW 18.0Rated input capacity KVA 24.1No-load voltage V 320Power factor - 0.74Efficiency % 89.5

Rated duty cycle % 100（40℃）Rated cuttingcurrent/voltage

A/V125/130

Current adjusted range A 30～125Arc pilot type - Not-contact typePlasma gas - AirGas pressure Mpa 0.4～0.6

Quality cutting thickness(low carbon steel)

mm25(580mm/min)

The maximum cuttingthickness

(low carbon steel)

mm32(400mm/min)

The maximum cuttingcapacity

(low carbon steel)

mm38(300mm/min)



4

Insulation grade - FCooling mode - Air cooling

Protection grade - IP21SDimension (L*W*H) mm 670×320×600

Power source net weight kg 49

2. Plasma gas requirement Pressure range：0.4MPa～0.6MPa Proof pressure of the gas supply pipe：≥1MPa Inner diameter of gas supply pipe：Φ5.5 Rate of gas flow：≥280L/min The gas should not be input into the plasma cutting machine without filtering the

water.3. Static External Characteristic Curve (Figure 1)

Figure 1

四、 Panel and functions

As figure 2

1. Digital current meter: when it;s not cutting, it displays the preset cutting current.When it’s cutting, it displays the real cutting current.

2. Power light: It indicates if the machine is on power;3. Gas pressure light: a light which indicate the compressed air pressure, it lights when

the air pressure is higher than 0.2Mpa and lights out when pressure is lower than0.15Mpa;

320 V

U

1 25 AI

199 V



5

4. Start lights: it lights when the machine is on or on cutting process;5. Overheating lights: it lights when the machine inner temperature is too high(When the

cooling fan is broken or the machine work over the capacity);6. Power abnormal light: it lights when the input power is abnormal or overload;7. Current adjusting knot: it adjust the cutting current;8. Gas control switch: when pressed on gas checking” ”, the gas valve open, to check

the gas flow; when pressed on cutting” “, the valved will be controlledautomatically;

9. Cutting mode switch: when pressed on cutting” “, it cuts metal plates; whenpressed on cutting” “, it cuts metal nets;

10. Ground cable plug: it connects the ground cable;11. The control plug of ignition controller: it connects the control signal of the ignition

controller.12. Negative pole output: it connects with the negative pole input plug of the ignition

controller;

绝缘等级： F防护等级： IP21S

X

I 2

U 2

100%

f1

f2

成都华远电器设备有限公司

地址：成都市武侯区武侯科技园武兴四路 5号

出厂编号 :

冷却方式：风冷

U 1 =380V3～5 0Hz

3 ～

R

G B15 57 9. 1- 20 13

弧压输出

V

控制讯号

3～ 380V

V

T h i s s w i t c h i s o n l y u s e d f o r P r o t e c t i o n ！

此开关仅作保护用

请另配电源开关！

7

10

1 1 1 2 1 3

1 4 1 5

1 6

17

18

19

重量： 40kg

型号 : L G- 13 0 HA

A

V

电源气压

V

启动过热

V

欠压

8

2 3 4 5 6

9

连续

断续

切割

试气

A 切割电流

1

名称：逆变式机用等离子切割机

3 0A/9 2V-1 25A/1 30V

125A

130VU0=318V

I 1m ax =37A I 1ef f =37A

Figure 2

13. Gas output: it connects with the gas input plug of the ignition controller;14. Power switch: control the power of the plasma cutting machine;15. Power input terminal: to connect 3 phase 380V input power;16. The air regulating and filtering device: to adjust the air pressure and filter the water



6

and grease in the air;17. Connector of arc voltage output: output 1:1 arc voltage , plug 1 is positive and plug 2

is negative, connect it to the CNC control system with cabtyre cables which is ≥500VDC.18. Controlling signal: to connect with the CNC cutting machine.

Plug 1 and 2 is the signal outputs of arc striking, it is in short circuit after arcstroke, and it can control the signals which is lower than 125VAC/0.3Aand 30VDC/1A; Plug 3 and 4 is the control connector to start the plasma cutting machine, thisconnector can only be controlled by one group of switches.

19. The protection grounding terminal: to connect the protection grounding cables.

五、 System constitute

LG-125HA is constituted by one LG-125HA plasma power source and a QFK-C arc strikeignition, the arc strike ignition is installed on the walking part of the CNC machine tool, and it isconnected with the plasma power source by control cables.

1、 Some Necessary Equipment Of CuttingNo. 1 2 3 4 5 6 7 8

NamePlasmapowersource

Arcstrikeignition

Generalcontrolcables

Plasmacuttingtorch

Distributionbox

Input powercables

Work piececable

Compressed air

ModelLG-

125HAQFK-C QFK-C

HYC-125A

3phase380V

≥6mm2×4 ≥35mm2 ≥280L/min

注： Note: “The input power cable” is prepared by user according to their actualrequirement.

2、 The cutting system connection please see the figure 3



7

figure 3 the schematic connection diagram of cutting system



8

六、 Installation and operation

Flitting and Lifting1. Before moving the plasma, make sure the power is off and take out of the power line;2. When moving, the plasma should never be lie down or inclined;3. When lifting, it must be lifted vertically;4. When transported, it must be fixed by foam, and make sure the rain-proof.

Installation and connection1. The installation environment must accord with the “二 ” operation environmental

requirement;2. Check if all the equipment is prepared according to contents in “五”, and install the

machine by figure 3;3. Please cut off the power before installation and connection;4. If the plasma is put on a slant place, make sure it will not topple and fall;5. The installation grade of this plasma is IP21S, that means it can not use in rain.6. Power supply requirement

Voltage fluctuation ≤±15％; Frequency fluctuation ≤±1％; The sectional area of cables/lines, the fuse capacity reference table:

Item SpecificationThe sectional area of copperpower supply cable (mm2)

6～10

The sectional area of coppergrounding cable (mm2)

4～6

The air break capacity (A) 63

The fuse capacity (A) 80

7. The installation of power supply cableFirstly cut off the power, then connect the power cable with the distribution box,

make sure the right voltage and connect it carefully;

8. The connection of the grounding cableReliably connect the ground cable of green-yellow line to the ground, and make

sure to use the right cable which accord with the specification of above referencetable.

9. The installation and connection of the arc strike ignition (refer to figure 3): The arc strike ignition can be installed on the walking part of CNC machine tool or

some other fixed position, the dimension and size of the arc ignition please checkthe figure 4, use can install it by actual operation environment;

Install it on a horizontal position; Connect the ignition with the plasma power source by the control cables, refer to



9

the figure 3; Connect the ground cable with ignition terminal and machine tool; The connection of cutting torch: firstly, connect the M16 nut that on the torch

with the brass mouthpiece on ignition which marked with “gas/electric output”,and screw up the nut; then connect the arc striking line of the torch with bindingposts on ignition which marked with”arc striking”, and screw up the nut;

Figure 4 the dimension and size of the arc ignition

10. The connection of compressed air and the operation of pressure regulating filter(Thefunction of pressure regulating filter, please check the figure 5)



10

进气管

排水嘴

气体压力调节阀

气管快插

Figure 5 Pressure regulating filter

he pressed air must accord with the requirement as in “三” of 2, connect the airhose with the inlet valve on plasma. The operation of pressure regulating filter: whenregulate the pressure, pull up the regulating screw first, then rotate it, rotate left toreduce the air pressure and rotate right to increase the air pressure, after regulating,press the screw return.

The pressure regulating filter should be checked and discharged water regularly.It must be discharged water when the water lever arrive to 2/3 of filter cup, or thecutting performance can not be ensured. When discharging water, cut off the air valve,and press on knob on “check air” on panel, when gas pressure meter indicate on 0,water will be discharged automatically.

11. The connection of the CNC machine tool: please refer to the 17th and 18th of “四 ”,connect the control signal of machine tool and the plasma, the arc voltage signal lineshould be connected to the CNC control system with cabtyre cables which is≥500VDC.

12. The connection of cutting ground cableConnect the quick coupling terminal of grounding cable with connector of

“grounding cable” on plasma, screw up, connect the other terminal of groundingcable with workpiece.

How to use1. After complete installation and connections, turn on the power, then the power light

will light up.2. Start the gas supply equipment and open the gas supply switch, then the gas pressure

indicator light will light up. If the gas pressure is lower than 0.2Mpa, the indicatorlight will not light up, and the gas supply should be checked.

3. Turn the switch on panel to “gas checking”, regulate the pressure regulating filter toget the right pressure, then turn the switch on “cutting”;

4. Check the indicator lights on panel, only if same as the below table, the machine cancut.



11

Indicator light Power Gas pressure Overload Input fault

Status Light on Light on Light off Light off

5. Start cutting at the edge of the workpiece plate, the distance between nozzle andworkpiece should be in a range of 2~5mm, the axis of nozzle should be vertical withthe workpiece. The cnc machine tool send the starting signal, the compressed gassprayed out from nozzle, after pre-gas, high frequency is produced and then the arcstroke, the machine start walking and cutting.

七、 Working principal

IGBT is chosen to the main component of the inverter switch in the main circuit.The AC power is rectified to 20KHz high frequency current by full-bridge powerfrequency. The high frequency current is step-down by high frequency transformer,rectified by recovery diode and filtered by reactor, then output the cutting current. Thecontrol circuit control the output current by controlling the width of driving pulse. Thecutting current ampere of real-time is obtained by electric current transducercascaded on output terminal, as a negative feedback control signal, it will becompared with current adjusting signal, then input it to the special PWMmodulationintegrated circuit, output controlled driven pulse to control the IGBT to get a constantcurrent , then get a constant current external characteristic. The arc striking is non-contact type.

For main circuit diagram please check the attached Figure 1, and for Principalblock diagram Please check the figure 6 below:

AC工频整流

滤波DC

IGBT逆变

IGBT驱动电路

脉宽调制

电路

过热、欠压

电流给定信

号控制电路

PI调节控

制电路

电感滤波直流输出

DC

AC整流单元

降压

高频变压器

负反馈控

制电路电流采样

缺相保护电路

供电电源（AC）

Figure 6 Principal block diagram



12

List of some common Components

No. Code Name Model Remarks

1 V1Rectifier bridge

moduleMDS100-12

2 V2、V3 IGBT module 2MBI100VA-120-50

3 V4～V9 Diode module DBA200UA60

4 TA1、TA2 Hall sensor HAS 100-S/SP50

5 QF1 Air switch DZ47-63/3P D63

6 R5 Resistance RXG7-10Ω/50W

7 YV1、YV2 Gas valve DF2-2（3）-B/AC36V

8 EV1 Cooling fan 200FZY6-S

9 RP1 Potential-meter B502

10 KT1Temperature

Potential-meterJUC-6F-75℃常闭

11 BP1 Pressure controller YKC 0.2/0.15

12 AP1 Main control board LGK7-AP1

13 AP2 Driving board LGK7-AP2

14 AP3High frequency

boardHFAP1-A3

15 AP5 Arc starting board PK06-A1

16 AP6 Arc striking board PL06-A1

17Air pressure

regulating filterGFR-200-08

18 XS6 Ten cores socket WS24K10Z

八、 Protection instruction

Pressure protection1. When the gas pressure is lower than 0.2 MPa, the protection circuit woks and plasma

will stop working;2. When cutting, if the pressure is lower than 0.15 MPa, the cutting arc will stop;



13

Note: the cutting pressure could only be adjusted when press the switch to “Airchecking” on panel!

Over-heating protectionWhen environmental temperature is higher than 40℃ or anything abnormal of

cooling fan, working on rated cutting current, if the plasma is over-heating, the over-heating protection circuit start to work and cutting stop.

Voltage Input fault protectionAny phase default or 20% higher or lower than standard voltage, the protection circuit

works, and plasma stop working.

九、 Maintenance

1. The machine should not be used or store in the sun;2. The machine should not be used or store in the wet;3. The air hole should not be covered when using;4. The cover should be opened at least once a year to clear the inner impurities

and sundries;5. Regularly check all the insulation of cables, anything broken, it should be

repaired soon;6. Regularly check all the connections of machine, if anything loosen, it should be

tighten soon;7. Regularly clear the water and dirties in pressure regulating filter.

Note: when repair or maintenance, let a professional electrician remove the powerline in distribution box, then open the cover.

十、 Trouble shooting and repairing

There is high voltage inside the machine, only professional electrician couldrepair the machine;

If anything wrong, please firstly check:1、 If the distribute voltage is normal and stable;2、 If the input fault indicator on panel light on, then check the power switch of

distributor, fuse and power line, if anything broken, the plasma stops;3、 Check if there is anything broken on connections, torch nozzles and electrodes;4、 Check if there are any connection faults on machine tools control signals, check

according to 18th in “四”;5、 Check if the ground cable is connected well;6、 Check if water in pressure regulating filter is discharged;7、 If the gas pressure indicator on panel is light off, check if the gas hose is

connected well and check if the pressure is normal;8、 If the over-heating indicator on panel light on, check the temperature relay;



14

9、Open the cover and check the fuse beside the controlling transformer; Trouble shooting and repairingTroubles/problems Possible reasons Trouble shooting

1．Turn power on,the power indicatorlight off, digitalmeter light off

1．Default phase;

2．Switch of power supplydamaged;

3．1.5A power controlling fusedamaged;

1．Check the 3 phase power supply;

2．Change a new power switch;

3．Change a new power fuse;

2．No arc striking,input fault indicatorlights on

1．Default phase;

2．Over voltage of undervoltage;

Check the power supply voltage;

4．No arc strikingor arc stops whencutting, the over-heating indicatorlights on

1．Environmental temperature istoo high;

2．The cooling fan is broken;

3．The temperature relay isdamaged;

1．Stop the machine and rest for awhile;

2．Check the power of fan or changea new cooling fan;

3．Change a new temperature relay;

5．Machine Cannot start, gaspressure indicatorlights off

1．No gas pressure;

2．Gas pressure is too low;

1．Connect the gas supply;

2．Adjust the gas pressure;

6．No arc striking,gas pressureindicator lights on,input fault indicatorlights off, over-heating indicatorlights off

1．Poor connection of groundingcable;

2．The gas pressure is too high;

3．The torch nozzles andelectrodes are broken;

4．The torch is broken;

5．The nozzle contacts with theworkpiece;

1．Connect the ground cable well;

2．Lower the pressure;

3．Change nozzles and electrodes;

4．Change torch;

5．Lifting the torch to a proper2~5mm distance;

7．Poor cuttingquality

1．Wrong gas pressure;

2．Too thick workpice plate;

3．The torch nozzles andelectrodes are broken;

4．The plasma arc is not verticalwith workpiece；


2．Choose a proper thickness to cut;

3．Change nozzles and electrodes;

4．Adjust the torch angle;

5．Adjust the cutting speed;



15

5．Wrong cutting speed;

8．Too shortworking life ofnozzle andelectrode

1．The gas pressure is too low;

2．The nozzle is too close withthe workpiece;


2．Adjust to a proper 2~5mmdistance;

十一、 Accessories

No. Choose Name Qty

1 □ LG-125HA power source 1

2 □ QFK-C1arc striking ignition 1

3 □ General controlling cables 1

4 □ Cutting torch 1

5 □ Ground cables 1

6 □ Electrode 2

7 □ Nozzle 4

8 □ Swirl ring 1

9 □ Fuse 2

10 □ Operation manual and certificate 1

Note: The real packing list please refer to the items which are marked□√ .

12

34

56

78

ABCD

87

65

43

21

D C B A

LG-1

25H

A主电路原理图

HYLG

125H

A-0

6-00

1

QF1

C5

40U

/14

00V

DC

V2

SKM

100G

B1

28D

V3

SKM

100G

B1

28D

R1

R2

C17

C6

5U/5

00V

AC

TM1

TA2

V4

V7

L4

C2

C1

CB

B22

/100

n/6

30V

C3

XS2

XS3

L1

L3

C7

FU1

1.5A

EV1

风扇

D40

V1

＋15V 1

Out 3

-15V 2

0V 4

TA1

TC1

18V

18V

8V

380V

220V

415V

过热

欠压

2838

39

37

电源

29

HL4

HL5

HL1

KT1

3635

59

30 31 3233 34

46454443

PA1

65 66.

67 68.

G2

E2G

1E1

G4

E4G

3E3

G1

G2

G3

G4

G1

G2

G3

G4

E1E2

E3E4

E1 E2

E3 E4

1 2 3 4

5 6 7

8

9 10 11

18.

12

72

73

7576

742223

25

24

AP2

60.

62 6260

5961

切割电流

5352

16 17

50

15

AP1

检气

切割

68.

17

15V

110V

36V

4041

42

RP1

5K

V5

V6

13

BP1

气压开关

5857

启动

HL3

气压

HL2

545551

6364

13

71 C8

C9

27

AP4

TC2

380V

415V

L5

78

6.

SA2

9916

8182

8384

43A

44A

45A

46A

G

4344

4546

4177

78

＋15V 1

Out 3

-15V 2

0V 4

TA2

RV

1

R5

R6

R7

2

3

1 4

5

C5

77 78

C25

1318

36V

AC

THF1

YV

1

YV

2

17 99 18 68 15

AP5

68 90

68B

90B

27

25

27A25

27B

25

起弧控制器

气电输出

31764

1817

9968

15

31

57

6

C18

C19

53516364

引弧成功

启动信号

数控

接口

64 63

51

53

1 2 3 4

24

25

弧压信号（

XS4）

FU2

1.5A

8079SA

1

连续

断续

引导弧电缆

E

V8

6463

1318

5351

13

18

41

AP6

设计

肖春茂

时间

修改

时间

审核

时间

图号

共 1

张

第

1 张

图纸名称

成都华远电器设备有限公司

2014

.10.

31批准

时间

起弧控制器接口（十芯插座）27

2727

89

10

2727

272727 18

8 9 10 5

18

4

V9

2727

XS6

XS5

XS1

9068.

98.

99. A

P3

C14

The final explanation rights reserved to Huayuan Company!

If there is any changes in the user’s manual, forgive not to informseparately!

Chengdu Huayuan Electric equipment Co.,Ltd.

Address: Wuhou National Science Park, Chengdu, China

Postcode: 610045

Telephone:0086-28-85365838

Fax:0086-28-85033444

E-mail: [email protected] [email protected]

www.hwayuan.com

mailto:[email protected]

mailto:[email protected]

http://www.hwayuan.com

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Inverter machine use plasma cutting machine Operation Manualen.hwayuan.com/upload/2015-10-28/39664f57-cd90-478b-8966-239eb3718271.… · Inverter machine use plasma cutting machine