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Hwayuan Electric LGK-100GBT, Руководство оператора

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   LGK-100.160.200IGBT OPERATOR’S MANUAL                                    

    

9 

diode. This DC current is filtered through reactor, and the output cutting current is obtained. 
Control circuit can control output current by controlling driven pulse width. The real time 
cutting current, which is obtained through current sensor connected to output terminal in series, 
is used as negative feedback control signal. After comparing with current adjusting signal, the 
negative control signal is sent to PWM adjusting integrated circuit, then a controlled driving 
pulse is output to control IGBT. Thereby a constant output current can be maintained, and a 
steep dropping & constant current external characteristic is obtained. Striking arc adopts 
high-frequency striking model. The main circuit refers to appendix figure1

，

and principle 

diagram of control circuit is shown as figure 2. 

AC

DC

DC

AC

3-phase input（AC）

IGBT Inverter

DC output

IGBT dri ve
circ uit

Fundamental
frequency
rectifier&filter

Rect ifie r un it

Cu rr en t sa mp li ng

Indu ctan ce
filt er

High fre quen cy
tran sfor mer

Ne ga ti ve f ee db ac k
co nt ro l ci rc ui t

Overheat,under voltage
protection circuit

Cu rr en t gi vi ng
co nt ro l ci rc ui t

PI a dj us tm en t
co nt ro l ci rc ui t

PWM circ uit

 

Figure 2 Principle diagram 

 

Common component list as diagram1

   

No. Symbol Components 

name 

Model 

Remark 

CM100DC-24NFM 

LGK-100IGBT 

CM150DC-24NFM 

LGK-160IGBT 

1 V2

、

V3 IGBT 

module 

CM200DC-24NFM 

LGK-200IGBT 

TKC-100BS 

LGK-100IGBT 

2 TA1 

Hall current sensor 

TKC-200BS 

LGK-160.200IGBT 

DZ47-63/3P D63 

LGK-100.160IGBT 

3 QF1 

Breaker 

CDB2-125/3P/D100 

LGK-200IGBT 

4 YV1 

Magnetic gas 

valve 

DF2-B-2/36VAC 

 

5 YV2 

Magnetic gas 

valve 

Q22XD-5-36VAC 

 

6 EV1  Cooling 

Fan  200FZY2-D/AC220 

 

7 RP1  Potentiometer RV24YN-20S-B502 

 

8 KT1 Temperature 

relay 

JUC-6F-75

℃

 normally 

closed 

 

9 C16 

Capacitor  0.0056U/12KVDC 

 

10 BP1 

Pressure 

YKC 

0.3/0.25 

 

Содержание LGK-100GBT

Страница 1: ...LGK 100 160 200IGBT INVERTER AIR PLASMA CUTTING MACHINE OPERATOR S MANUAL PLEASE READ IT CAREFULLY BEFORE OPERATION CHENGDU HUAYUAN ELECTRIC EQUIPMENT CO LTD ...

Страница 2: ...peline 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 ...

Страница 3: ... grounding clamp the welding cable and the welding head are not affected by damp mildewed or spoilt and be replaced momentarily Never dip the electrode in water for cooling Never touch electric components of two welding machines at the same time because this voltage is supposed to be two times of welding voltage while the grounding mode is not clear While working high above the ground or other pla...

Страница 4: ...nd 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 welding area 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 ...

Страница 5: ... 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 supplied by HUAYUAN There is no lifting equipment in its wrapper Users can move it to the prospective area by a fork lift truck and then open the box If having rings the machine can be transited using ri...

Страница 6: ... Attention 6 Work Environment Conditions 7 Technique Parameters 8 Working Principles 8 Panel and Functions 10 Protection function of the cutter 12 Installation and Operation 13 Maintenance 17 Cutting technology instruction 17 Troubleshooting and Repair 20 Accessories 22 ...

Страница 7: ...tting current Good arc stiffness Clean and smooth incision Excellent technology performance 4 It has the function of ascending current slowly which can effectively extend the work life of wearing parts and cutting torch 5 Quite suitable for CNC automatic cutting and has all signal output which is required by CNC control 6 The cutting current is very stable and it will not be influenced by grid vol...

Страница 8: ...gn bodies from entering inside the machine And protect the cable from sharp materials Ú Protect the machine from fall or collision In case of fall or collision it can be used only after professional checking Ú In the surface or inside of the cutting workpiece there should be no flammable and explosive materials or chemical materials harmful to human Ú Installation and repair person must have state...

Страница 9: ...95 320 580mm 800 380 610mm 800 380 810mm Weight 51Kg 73Kg 90Kg 2 Plasma gas conditions Work pressure range 0 4MPa 0 6MPa Gas supply pipe compression strength 1MPa Gas supply pipe inner dimension Φ8 Gas supply flux 180L min Filter water from gas and then put it into cutter Figure 1 External characteristic Work principles The control circuit of cutting machine adopts advanced electronic part IGBT as...

Страница 10: ...wn as figure 2 AC DC DC AC 3 phase input AC IGBT Inverter DC output IGBT dri ve circ uit Fundamental frequency rectifier filter Rect ifie r un it Cu rr en t sa mp li ng Indu ctan ce filt er High fre quen cy tran sfor mer Ne ga ti ve f ee db ac k co nt ro l ci rc ui t Overheat under voltage protection circuit Cu rr en t gi vi ng co nt ro l ci rc ui t PI a dj us tm en t co nt ro l ci rc ui t PWM cir...

Страница 11: ... torch switch should be pressed at the process of cutting and the cutting comes to stop after loosening the switch When it turns on 4 Step press the torch switch and loosen it the cutting starts to work and comes to stop after pressing the switch again 10 Cutting ground wire outlet To connect cutting ground wire 11 Torch Pilot terminal To connect torch pilot wire 12 Torch control outlet To connect...

Страница 12: ... urr ent 自锁 4 S te p 非自锁 2 S t ep 试气 Che ck ai r 切割 I nc i se 水冷 割炬 W at e r c o o le d T o r ch 气冷 割炬 A ir co ole d T or ch 电源指 示 Pow er 气压 Ai r p res su re 切割 In cis e 过热 O ve rlo ad 供电异常 I npu t fau lt 水压 W at er pre ss ure 指示 灯 I nd i ca t o r L GK 2 00 I GB T IN VE RT ER A IR P LA SM A CU TT IN G M AC HI NE 逆变 式 空气 等离 子切 割 机 华远焊机 NHUAYUAN WELDER R Work cable 切 割地线 Water current Back water 回水 ...

Страница 13: ...1 When the indicated value of the pressure meter which is fixed on the back of the cutter is lower than 0 2 MPa the protection circuit starts working and the cutter cannot start 2 When the indicated value is lower than 0 15 MPa during cutting the cutting arc will extinguish Note When adjust the air pressure the panel function must be set to air checking Water pressure protection LGK 100 does not h...

Страница 14: ...ng down D Shield rank for cutting power is IP21S The installation and operation cannot be proceeded in the rain 3 Power supply requirements A Voltage fluctuation 10 B Frequency fluctuation 1 C Asymmetry rate of three phase supply system 5 D Power supply wire cross profile ground wire cross profile breaker and fuse should refer to the diagram below Items LGK 100 LGK 160 LGK 200 Power supply wire cr...

Страница 15: ... the indicated valve of gas pressure meter is zero water will drain out from drainage mouth automatically 7 Connection of cooling water LGK 100 does not have this function Connect the copper nozzle marked with water inlet on the cutter back side with water supply pipe and tighten it Connect the copper nozzle marked with Backwater with water recycle pipe and tighten it Notes when apply gas cooling ...

Страница 16: ...he requirements on connection of control plug when customers change different torch from another factory z Adopt WS20J4TQ 4 core pin form WEIPU Electrical Appliance Co Ltd z Requirements on air cooling torch connection 1 Connect the 1 2 pin of 4 core pin to switch control wire of cutting torch 2 Short connect 3 4 pin of 4 core pin by gummed wire 3 Striking arc wire connects cold press joint UT 8 z...

Страница 17: ... may hurt or even kill man Shut off the power during connection Do not touch the conducted parts Cutting may cause fire or explosion Splashes may ignite flammable materials nearby Those materials should be 10m away from the working place Fume dust is harmful Do not breathe in the fume and dust caused by cutting Clean up the oil spot on work piece Keep fresh air in working place Fume extraction equ...

Страница 18: ...ng begins by moving torch i When the control switch of operation method on front panel is at 2 Step point press down the torch switch and cutting starts after arc striking After loosening the switch there is no voltage output and cutting ends and compressed gas stops supply in 9 seconds When it is at 4 Step point press down the switch and loosen it and cutting starts after arc striking automatical...

Страница 19: ...g thickness is different z Electrode inner contraction ΔLy When electrode inner contraction ΔLy is so small that electrode extends into spray hole electrode is damaged seriously by air flow impact and the combination function between high temperature gas and electrode This leads to the instability of plasma arc weak compression effect and weak cutting penetration ability that cutting cannot be pro...

Страница 20: ...s caused by the drag of overlarge cutting seam During the cutting process the heat received by different parts of metal is different the heat on the upper incision is larger than that of the lower incision so the upper part melting speed is faster than that of lower part thereby a distance between them is formed it is called drag L of cutting seam The drag size is related to plasma arc shape and c...

Страница 21: ...el incision square upper side and no metal slag seam on the lower side is obtained Troubleshooting repair 1 If there is trouble caused by high voltage in the machine a professional electrician or serviceman of our company is required to repair it 2 Please check following first when there is trouble 1 The three phase power should be 380 40VAC check if it misses phase or voltage fluctuation exceeds ...

Страница 22: ...change LGK AP1 5 no arc striking cutting indicator lamp gas pressure lamp are ON and power supply abnormity indicator lamp and overheat lamp are not ON 1 Cutting ground wire is not well connected 2 Gas pressure is too high 3 Torch electrode and nozzle are badly broken 4 Torch electrode and arc striking wire is short circuit which cause the damage of torch 5 HF board is damaged 1 Connect the cuttin...

Страница 23: ... supply power trips 1 three phases rectifier is damaged 2 IGBT module is damaged 3 other components in main control circuit is damaged 1 change a three phases rectifier under same model 2 change IGBT module under same model 3 check and change the damaged components If the troubles cannot be resolved please inform our local agent of the specific problems or contact us directly Accessories 1 Cutting...

Страница 24: ......

Страница 25: ...ompany If there is any change in the manual please forgive not to inform separately Address Wuhou National Science Park Chengdu China Postcode 610045 Tel 0086 28 85012443 85011951 85013964 Fax 0086 28 85033444 E mail hy_sales 126 com http www hwayuan com ...

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