1. Manuals
  2. Brands
  3. HUAYUAN Manuals
  4. Cutter
  5. LGK-200MA
  6. Manual instruction

HUAYUAN LGK-200MA Manual Instruction

Air plasma cutting machine
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
LGK-200/300/400MA
AIR PLASMA CUTTING MACHINE
MANUAL
INSTRUCTION
(PLEASE READ IT CAREFULLY BEFORE OPERATION)

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LGK-200MA and is the answer not in the manual?

Questions and answers

Related Manuals for HUAYUAN LGK-200MA

Summary of Contents for HUAYUAN LGK-200MA

  • Page 1 LGK-200/300/400MA AIR PLASMA CUTTING MACHINE MANUAL INSTRUCTION (PLEASE READ IT CAREFULLY BEFORE OPERATION)
  • Page 2 Safety Depends on You HUAYUAN arc welding and cutting equipment 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.
  • Page 3 Ca u t i on s Arc and arc rays can hurt. All performing welding workers ought to have health qualification from the authority organization to prevent you and others from arc radiation and burn. It should be prevented for children to enter into dangerous area as well. Be careful reading the following important items and the welder safety bye from the authority organization.
  • Page 4 6 Power: (For electrically powered welding and cutting equipment) Turn off input power before installation, maintenance and repair, so that avoid accident. HUAYUAN welding equipment is Ι class safeguard equipment; please install the equipment  in accordance with the manufacturer’s recommendations by specific persons.
  • Page 5 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.

  • Page 6: Table Of Contents

    Content 1 SUMMARY ........................1 1.1 M ......................1 ODEL ESCRIPTION 1.2 F ..........................1 EATURES 1.3 U ..........................1 SAGE 1.4 S ......................1 YMBOL NSTRUCTION 2 SAFETY AND ATTENTION ....................2 3 WORKING ENVIRONMENT REQUIREMENTS ..............3 4 TECHNICAL PARAMETERS ....................4 4.1 M ....................
  • Page 7 8.3 C ........................22 UTTING TABLE 9 PACKING LIST ......................... 25 9.1 P ................25 ACKING LIST OF PLASMA POWER SOURCE 9.2 S ......................25 YSTEM PACKING LIST 10 MAINTENANCE ......................25 11 TROUBLESHOOTING ..................... 26 11.1 P ............26 LEASE FIRSTLY CHECK FOLLOWING ITEMS IF ANY TROUBLES 11.2 O ...............

  • Page 8: Summary

    1 Summary Model Description □□□ Series code Rated cutting current Air medium Cutting Plasma arc cutting machine Features LGK-200、300、400MA series plasma cutting machine have below features：  Adopt gas pressure sensor, the cutting torch can be properly protected when the gas pressure is too low;...

  • Page 9: Safety And Attention

    Read the manual carefully Dangerous voltage Over-heat Input voltage Power abnormal Output current Air pressure Voltage output Coolant liquid input Voltage input Coolant liquid output Cutting Plasma torch Check gas Lock Ground lead Unlock Protection ground lead Water cooling Remote control Air cooling Increase/ Decrease The nozzle connection of...

  • Page 10: Working Environment Requirements

    first.  Protective shield should be worn. In order to avoid any hurt to eyes from ultraviolet radiation and strong light and to skin from spatter, please wear protective shield according to related rules and regulations of labor protection.  It is forbidden to inhale harmful gases. The fumes and gases produced during cutting is hazardous to health.

  • Page 11: Technical Parameters

    4 Technical Parameters Main Technical Parameters Model LGK-200MA LGK-300MA LGK-400MA Parameter Rated input voltage 3～380/415V 50/60Hz Rated input power 44.1 kVA 56.6 kVA 84.9 kVA Rated input current 129A Rated output current 200 A 300A 400 A Rated output voltage...

  • Page 12: External Characteristic Curve

    External characteristic curve Torch coolant requirements The coolant box is empty when delivery out. Before fulling the coolant box, please check which coolant is suitable for your environment. Warning! The cooling liquid is irritant to skin and eyes, if wrongly eat or drink, it hurts even kills.

  • Page 13: Installation And Operation

    maintained, and a steep dropping & constant current external characteristic is obtained. Striking arc adopts high-frequency striking model. The main circuit refers to appendix figure, and principle diagram of control circuit is shown as below figure： 6 Installation and operation Moving and lifting ...

  • Page 14: The Connection Of 3 Phase Input Power Cable

    LGK-200MA Dimension and installation size LGK-300/400MA Dimension and installation size The connection of 3 phase input power cable  Power supply condition 1) Voltage fluctuation≤±10％； 2) Frequency fluctuation≤±1％； 3) Unbalance rate of three phase voltage≤5％； 4) The power supply condition please check the chart below:...

  • Page 15: The Connection Of Compressed Air And The Operation Of Pressure Regulating Filter

    electrician. Connection of ground cable  Connect it to ground on marking of the machine body), the sectional area must match the requirements in above form, to ground firmly. Ground connecting method should follow state standard. The connection of compressed air and the operation of pressure regulating filter The function of pressure regulating filter please check the below figure Pic 7：Air filter regulator...
  • Page 16 Air & Current output: the negative output connector of the machine is the  plasma gas output connector, the connector thread is M14×1.5; Water & Current output: the negative output connector of the machine is the  cooling water output connector, to connect the water inlet of the water cooling torch, the connector thread is M16×1.5;...

  • Page 17: Panel Function Instruction

    4) The requirements of control plug connection when customers use different torches Use WS20J4TQ 4-pins plug;  Requirements on air cooling torch connection:  a) Connect the 1, 2 pin of 4- pins plug to switch control wire of cutting torch; b) Short connect 3, 4 pin of 4-pins plug by gummed wire;...
  • Page 18 Function one: choose the “torch unlock” and “torch lock” function. When it turns on “torch lock”, the torch switch should be pressed in the process of cutting, and the cutting stops after loosening the switch. When it turns on “torch unlock”, press the torch switch and loosen it, the cutting starts to work, and the stops after pressing the switch again;...
  • Page 19 to recovery all the second menu parameter to factory set data. 14) AIR PRESSURE indicator light：to indicate the status of plasma gas pressure. If this indicator light is ON: means the plasma gas pressure ≥0.38MPa, it’s  normal. The indicator light 0.3s on and 0.3s off (Quick flashing): means the plasma gas ...

  • Page 20: Protection Function Introduction

    Note: When adjust the air pressure, the panel function must be set to ‘GAS TEST’ ！ 2) Water pressure protection When the water supply flow is lower than1.6L/min for LGK-200MA and 2L/min  for LGK-300/400MA, the COOLANT FLOW indicator light will not on, error code E81, protection circuit starts working and cutter cannot start;...

  • Page 21: Operation

    When 3 phrase power supply is lower than 280VAC, protection circuit starts working and there is no arc striking; Note: the water and air pressure protection function is for protecting the torch only! 5) Coolant flow shortage protection When the coolant shortage, error code E84, protection circuit starts working and cutter cannot start 6.9 Operation 1) Safety note...
  • Page 22 Turn on the power switch after installation and connection. Then the power indicator lamp is ON; 2) Fill the torch coolant Non-proper coolant filling may cause the machine damage! Coolant capacity of the cooling system is 20L, the specific capacity depends on the length of the integrated cable.

  • Page 23: Operation And Setting

    work-piece. The cutting torch should be inclined to one side a little during piercing on work-piece, so that the molten metal can be blown away easily. Piercing is not recommended, because it damages nozzle easily, it is better to drill a hole in arc striking point first, then strikes arc on the edge of the hole.

  • Page 24: Cutting Current Setting

    Cutting current setting Press “DISPLAY” key and display the current on the meter, then rotate to adjust the current. Knob Current Display Current Press it ① In standby mode, the meter displays the pre-setting current. ② In cutting mode, the meter displays the actual cutting current, when adjust the current, the meter will display the pre-setting current again, after adjusting, meter displays the actual current again.

  • Page 25: Torch Monitoring Function

    If reach the set value, there will Cutting time set 1～999 Min. be warning or controlling, Piercing time set 1～999 Time cutting stops Cutting rest time disp. Piercing rest time Time disp. On (1): Cannot cut after Monitor control 0 or 1 warning switch Off (0)：Can cut after warning...

  • Page 26: Brief Introduction Of The Cutting Technology

    displayed, the machine can keep working;  Step 4: enter secondary menu and choose “P10 monitoring warning function”, set the value to “1” and press confirm key and finish the setting, quit the secondary menu. Note: for detailed operation information of function key and secondary menu, please refer to “7.5 secondary menu.

  • Page 27: Cutting Burr Eliminating Issue

    increases. But overlarge current may cause the instability of the plasma arc. Usually no change is made to air flow for one torch. But it can be adjusted a little when the cutting torch or cutting thickness is different 4) The distance between the nozzle and the work-piece (d) If the d is too big, the blow power of plasma arc for molten metal decreases, so does the cutting ability, and the burr on the bottom increases, meanwhile the instability of the arc increases.
  • Page 28 On the contrary, when cut copper or aluminum, the incision bottom is difficult to be melted together with molten metal, and the burr formed under incision is come off easily. 2) The factors affecting the forming of burr The fluidity of the molten metal is not good, when the power is too small or the ...

  • Page 29: Cutting Table

    stability of the cutting speed and operation. This makes it possible to adopt large air flux to enlarge the air blow force, and beneficial for eliminating burr. Adjust suitable air flow and cutting speed. If the air flow is too small, the blow ...
  • Page 30 Low carbon steel Air 160A Shielding Inner Out shielding cap Nozzle Swirl ring Electrode Water tube shielding cap HY05701 HY05601 HY05501 HY05401 HY05301 HY05201 HY05101 Distance between torch Plasma gas Thickness Cutting speed and work-piece mm/min 3300 1700 0.45 1300 （Non-contact）...
  • Page 31 1150 （Non-contact） Low carbon steel Air 300A Shielding Inner Out shielding cap Nozzle Swirl ring Electrode Water tube shielding cap HY05701 HY05601 HY05501 HY05403 HY05301 HY05201 HY05101 Distance between torch Plasma gas Thickness Cutting speed and work-piece mm/min 1800 0.45 （Non-contact）...

  • Page 32: Packing List

    Distance between Plasma gas Thickness Cutting speed torch and work-piece mm/min 1800 0.45 （Non-contact） 9 Packing List Packing list of plasma power source 1. Plasma power source * 1 set 2. Ground cable * 1 piece 3. Hose clamp *2 pieces 4.

  • Page 33: Troubleshooting

    8） Clear or change the liquid filter regularly, the recommended period is every 6 months or 300 arc hours. If find there is some impurities on the filter cylinder or filter net, open the discharge valve on the bottom to clear automatically, if can not clear well, rotate and remove the cylinder, take out the filter net and clear again, if the filter net is broken, have to change a new one.

  • Page 34: Ordinary Troubleshooting As Following Sheet

    Power off, close the start signal, then restart There is start signal start signal the machine Coolant flow shortage for more than 2 Can;t start, coolant hours:LGK-200MA 1. Check the water tank output pressure to flow indicator on, 1.6L/min~1.9L/min， judge the pump restart error code LGK-300/400MA 2.0L/min～2.3L/min...

  • Page 35: Main Components List

    1 ． Cutting ground wire is not well 1．Connect the cutting ground wire well striking, connected. 2．Lower the gas supply pressure cutting indicator 2．Gas pressure is too high. 3．Change the electrode and nozzle lamp, gas pressure 3 ． Torch electrode and nozzle are 4．Change the torch lamp are ON, and badly broken.
  • Page 36 Drawing 10：LGK-200MA Code Item Model L103 Inductance Customized R103、R104 RXG7-20W-30Ω + 30Ω Resistor L104 Linear inductance Customized TM101 Main transformer Customized 200FZY6-SF V104、V105 DBA200UA60 V106、V107 C109 、C110 Capacitor CT-103-2KV C111、C112、C12 200FZY2-D For fan C14、C15 Capacitor Motor YDK-370-4 Pump Head B070F...
  • Page 37 Item Model THF1 HF inductance Customized L105 Filter reactor Customized Resistor SQH 100W-10RJ R5、R6 Condenser Customized FAST-115LPP-2A1 Flow switch SEN-HZ21WC Flow sensor Valve Valve PXC10CEG03A616BD14511F Drawing 11：LGK-200MA Code Item Model HFAP1 C107 、C108 Capacitor HYC3003 Resistor RXG14-400W-1.5ΩJ - 30 -...
  • Page 38 C104、C105 Capacitor HYC4002 KT101 Temperature relay KSD305A 75℃ IGBT GD200HFF12C2SL V102、V103 C106 Capacitor HYC2004 PT27 R101 Resistor RY27-8W-150K C113、C114 Capacitor 100uF/500VAC C115、C116 C101 Capacitor CBB21-630V-1uF V101 Bridge rectifier MDS100-12 Drawing 12：LGK-200MA Code Item Model Inductance Customized PT05 - 31 -...
  • Page 39 Item Model Control transformer TL11 Air breaker DZ158-125/3P/125A Control transformer TL07 Fuse R3-22A( RH-30-F8A) Relay CDZ-62PL PL14 Pilot board PL13 FTVL-1.5-5 Gas valve Gas pressure sensor IP11C Gas reducing valve GR20008N PL12（LGK-200MA） Drawing 13：LGK-300/400MA Code Item Model - 32 -...
  • Page 40 Code Item Model AP6、AP7 PT27 C113、C114 C115、C116 Capacitor 100uF/500VAC C213、C214 C215、C216 R101、R201 Resistor RY27-8W-150K C106、C206 Capacitor HYC2004 V102、V103 IGBT GD200HFF12C2SL V202、V203 C104 、C105 Capacitor HYC4002 C204 、C205 Motor YDK-370-4 Pump Head B070F C107、C108 Capacitor HYC3003 C207、C208 L102 、L202 Linear coil Customized V104～V107 DBA200UA60...
  • Page 41 Drawing 14：LGK-300/400MA Code Item Model HFAP1 Resistor RXG14-400W-1.5ΩJ THF1 HF inductance Customized Hall sensor TKC500BR Output sensor Customized Resistor MYG3-20K/510 R3、R4 Resistor RJ-2W-100K Capacitor HYC1005 R5、R6 Resistor SQH 100W-10RJ C109、 C110、 C111、 C112、 C209、 C210、 Capacitor CT-103-2KV C211、C212、C12 R103、 R104、 R203、 Resistor RXG7-20W-30Ω...
  • Page 42 Code Item Model L104、L204 Linear inductance Customized V101、V201 Bridge rectifier MDS100-12 C101、C201 Capacitor CBB21-630V-1uF KT101、KT102、 Temperature relay KSD305A 75℃ KT201、KT202 Condenser Customized 200FZY2-D Drawing 15：LGK-300/400MA Code Item Model PT34（LKG-300MA） PT34（LKG-400MA） Air breaker CDM3-160 Control transformer TL07 Inductance Φ26×16×10 Fuse R3-22A( RF1-30-F8A) Relay CDZ-62PL PL12（LKG-300MA）...
  • Page 43 Code Item Model PL13 Valve FTVL-1.5-5 Pressure sensor IP11C Valve GR20008N Control transformer TL11 - 36 -...

  • Page 44: Appendix：circuit Diagram

    12 Appendix：Circuit Diagram Drawing 16 LGK-200MA - 37 -...
  • Page 45 Drawing 17 LGK-300/400MA - 38 -...
  • Page 46 The final explanation rights reserved to Westweld/Huayuan Company! If there is any changes in the user’s manual, forgive not to inform separately! Westweld Ltd 4-23-4, No.51, Xuefu Avenue, Nanan, Chongqing, China E-mail: info@westweld.com sales@westweld.com www.westweld.com - 39 -...

This manual is also suitable for:

Lgk-300maLgk-400ma

Table of Contents