amig -LST Series Quick Instructions
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amig -LST Series Quick Instructions

amig -LST Series Quick Instructions

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  • Page 2 AMIG-LST Series Quick Instructions (This quick instruction is based on AMIG350-LST model) Warning! An electric shock can be fatal. If the machine is plugged into the mains electricity supply during installation, there is a high risk of very serious injury and damage. Only carry out work on the machine when you have read the “Safety Rules”...
  • Page 3 Welding Standard MIG-Stainless Steel Welding Parameters Note: All settings are approximate/welds should be tested to comply to your specifications. WIRE FEEDING MIG /MAG-Steel Welding Parameters CURRENT(A) VOLTAGE(V) SPEED(m/min) THICKNESS (mm) OF MATERIAL 1.2mm WIRE FEEDING He+Ar+CO 1.0mm He+Ar+CO Ar+2%CO Ar+2%CO THICKNESS VOLTAGE(V) SPEED(m/min)
  • Page 4 Dear Customer This instruction manual will help you get to know your new machine. Read the manual carefully and you will soon be familiar with all the many great features of your new product. Meanwhile, please remember well safety rules and operate as instruction. If you treat your product carefully, this definitely helps to prolong its enduring quality and reliability things which are both essential prerequisites for getting outstanding results.
  • Page 5 Safety Rules Danger “ ” indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Warning ! “ ” indicates a possible hazardous situation which, if not avoided, could result in death or serious injury. The possible hazards are explained in the text. Caution “...
  • Page 6 Do not place your body between your electrode and work cables. Equipotential bonding Workpiece grounding (earthing) Shielding Shield the entire welding equipment and other equipment nearby. ARC rays can burn • Visible and invisible rays can burn eyes and skin. •...
  • Page 7 Hot parts can burn • Do not touch hot parts with bare hand or skin. • Ensure equipment is cooled down before perform any work. • If touching hot parts is needed, use proper tools and/or wear heavy, insulated welding gloves and clothing to prevent burns.

  • Page 8: Table Of Contents

    Contents 1 - GENERAL REMARKS............................... 6 1-1 Power source features............................... 6 1-2 Functional principle..............................6 1-3 Output characteristics..............................7 1-4 Duty cycle..................................7 1-5 Applications..................................8 1-6 Warning label................................8 2 –VERSIONS BRIEFS..............................8 3 -BEFORE COMMISSIONING............................9 3-1 Utilization for intended purpose only........................9 3-2 Machines set-up regulations............................. 9 3-3 Power source connection............................

  • Page 9: General Remarks

    1 - GENERAL REMARKS 1-1 Power source features This series of power sources apply IGBT soft switch inverter technology. Its internal control system applies DSP which ensures quick response to any change during the welding process so as to achieve precise control of welding process and ensure optimal welding results.

  • Page 10: Output Characteristics

    1-3 Output characteristics Fig. 1-3-1: Output characteristics 1-4 Duty cycle Duty cycle is percentage of 10 minutes that a machine can weld at rated load without overheating. If overheats, thermostat(s) will open, output stops. Wait for fifteen minutes for the machine to cool down. Reduce amperage or duty cycle before welding.

  • Page 11: Applications

    1-5 Applications AMIG350LST series can realize thin plate (less than 3mm thickness) welding of stainless steel, galvanized sheet, carbon steel. The power source is designed for the following applications: - Automated application - Automobile and components supply industry - Chemical plant construction - Boiler and pressure vessel - Shipyards - Power plant construction...

  • Page 12: -Before Commissioning

    3 -BEFORE COMMISSIONING Warning! Operating the equipment incorrectly can cause serious injury and damage. Do not use the functions described here until you have read and completely understood “safety rules”. 3-1 Utilization for intended purpose only This series may only be used for MIG, LST. Utilization for other purposes, or in any other manner, shall be deemed to be "not in accordance with the intended purpose".
  • Page 13 Wrong Coil the excess ground cable and welding cable in same direction respectively. Correct Straighten the ground cable and welding cable and make them close to each other. Bundle the ground cable and welding cable together, running the wires close to the ground. Correct When the excess cables are only be used by rolling up, coiling the cables to two windings in...

  • Page 14: 4- Amig350Lst

    4- AMIG350LST 4-1 System components This machine can be equipped with many different accessories and can be used in various sites with different configurations. Fig. 4-1-1: System components 4-2 Basic equipments for welding Only be equipped with the necessary accessories, can the power source operates well. The following is the needed accessories list.
  • Page 15 Note! Control panel of welding machine is for function selection and some parameters setting. Welding parameters can be adjusted by panel control (sub-menu parameter P09 is ON) and remote control (sub-menu parameter P09 is OFF). Fig. 4-3-1: Control panel 1.Adjustment knob Adjust the parameters.
  • Page 16 Load stored set of parameters. 5.STORE button - For accessing the sub-menu parameter set-up menu or (in job mode) for storing parameter settings. - During creating or correcting a job, store parameter settings. 6.Wire diameter button For selecting wire diameter. 7.Wire material selection button(s) For selecting the filler metal and shielding gas type.
  • Page 17 Fig. 4-3-6: 4-step mode - Special 4-step mode (arc-starting and crater-filler parameters are adjustable) Fig. 4-3-7: Special 4-step mode - Spot welding mode Fig. 4-3-8: Spot welding mode 9.Process button For select welding process. - MIG - LST 10. F2 selection button indicator...

  • Page 18: Sub Menu

    When the indicator lights up, F2 works 11. “JOB” No. For receiving parameter records/job numbers that were previously saved with “Store” button. 12.Welding speed indicator When the light is on, the right display shows the preset welding speed (cm/min) , and the wire speed and welding current &...
  • Page 19 Item Parameters Setting Range Min. Value Factory Setting Burn back time 0.01～2.00s 0.01s 0.10s Slow wire feeding 1.0～21.0M/min 0.1 M/min 1.5 M/min Gas pre-flow time OFF/0.1～10.0s 0.1s 0.20s Gas post-flow time 0.1～10.0s 0.1s 1.0s 1～200％ 1％ 135％ Initial period Crater filler period 1～200％...
  • Page 20 Longer time will cause waste of gas; shorter time will cause air hole during crater filler period - P05 Initial period Special 4-step mode and set the percentage between initial period and preset parameters. When adjust the initial period, press F2 and then adjust dial (1), make correction of the arc length of the initial period. Press F2 again to exit. - P06 Crater filler period 4-sept or special 4-step mode, set the percentage between crater filler period and preset parameters.
  • Page 21 the softer arc is; otherwise, the smaller arc energy is, the shorter droplet transfer time is, the harder arc is. Recommend to use factory setting parameter value. - P33 Spatter adjust The longer the parameter is, the larger welding spatter is; otherwise, the smaller welding spatter is. Too small will cause unstable welding, recommend to use factory setting parameter value.
  • Page 22 Fig. 4-4-2 Operating mode sequence diagram of start arc When welding voltage and current settings are correct, but not easy to start arc, please adjust sub-menu parameter as follow table. Item Function Adjust method If the welding wire strikes the workpiece quickly before starting the arc, the spatter is severe during the starting arc →...
  • Page 23 Fig. 4-4-3 Operating mode sequence diagram of crater filler Item Function Adjust method Transitional time from welding period to crater filler period Weld seam formation is narrow – increase the parameter value Weld seam formation is wide – reduce the parameter value Crater filler time, default is OFF No problem of weld seam formation - OFF Crater filler period...

  • Page 24: Job Mode

    4-5 Job mode “Job Mode” enhances the quality of welding, both in semi-automatic and fully automated operation. Traditionally, technical parameters of some repeated operations need to be written down for record. In Job Mode, it is now possible to store and retrieve up to 100 different jobs.
  • Page 25 Important! If the selected program location already has a job stored in it, then this existing job will be replaced by the new job. 5.“PrG” appears on the left display to indicate that the job is now stored. Release the Store button (5) 6.

  • Page 26: Interface

    4-6 Interface Fig. 4-6-1: interface 1. Quick socket (-) - Connect ground cable . 2.control socket Connect voltage feedback cable. 3.Main Circuit breaker The function of main circuit breaker is to protect welding machine and operator by automatic trip to turn-off power supply when overload or short circuit happens to the power source.

  • Page 27: Installation

    4-7 Installation Warning! An electric shock can be fatal. If the machine is plugged into the mains electricity supply during installation, there is high risk of very serious injury and damage. Do not use the functions described here until you have read and completely understood “safety rules” in the beginning. Only carry out work on the machine when - the mains switch is on turn-off position, - the machine is unplugged from the mains.
  • Page 28 ● Mounting the welding torch When welding different materials, the hose in the welding gun is different,-Steel wire hose is suitable for hard wire, such as carbon steel wire, stainless steel wire. Fig. 4-7-3: Installation for steel wire feed tube Note! If the wire hose is too tight or too loose, it will increase resistance for wire feeding and cause wire feeding unstable.

  • Page 29: Mig/Lst Welding Process

    Fig. 4-7-4: Connections for power cord and distribution box 4-8 MIG/LST welding process Warning! Operating the equipment incorrectly can cause serious injury and damage. This part is about operating. Do not use the functions until you have read and completely understood content of this manual. Fig.

  • Page 30: Technical Data

    4-9 Technical data Note! Please use the machine under the allowed power supply voltage range marked in the nameplate. Model AMIG350 LST Voltage/Frequency (3 phase) 380V±10％, 50Hz 400V±10％, 50Hz 415V±10％, 50Hz Rated input capacity (KVA) Rated input current (A) 19.2 Range of welding current (A) 60~350 Range of welding voltage (V)

  • Page 31: Disassembly And Reassembly

    4-11 Disassembly and reassembly Fig. 4-11-1: Inner structure Item Stock NO. remarks Control socket 740001-00045 Quick socket 740002-00027 Board for fixing quick socket 766003-03421 Knob 720031-00137 PC sticker 771001-01650 Plastic front panel 262005-01040 Control panel 262035-00317 Display board 220503-00190 Front panel 262005-01039 Left side panel 262017-00602...
  • Page 32 Filter inductor components 220479-00002 IGBT radiator 264005-00197 Current exchange inductor 220281-00037 Polypropylene capacitor|【MFD-DA01-500V-4μF】 722001-00073 IGBT radiator bracket 766002-01110 Top cover 262029-00476 Main control board |【MAG-350RL.6.0】 210580-00997 Drive board 210310-00118 Filter 752004-00017 Middle plate 263071-00415 Power transformerⅠ 220179-01096 Power transformerⅡ 220179-01097 Resonant inductance 220521-00072 Main transformer...

  • Page 33: 5-Trouble Shooting

    Rear panel 262011-00921 Fan protection net 766003-02403 Quick socket 740002-00027 European socket|【1601】 740004-00039 Overcurrent protector 745013-00044 Board for fixing control socket 766003-02405 Plastic rear decoration 766003-02389 Control socket 740001-00047 Cable waterproof clamp|【PG25(Black)】 773002-00011 Power cord 769001-00026 cover for main breaker 766003-02217 Table 4-11-1: Main components list Note: This table is for reference only, and the detail of actual product shall prevail.
  • Page 34 The torch trigger is on closed state when machine is ON Abnormal when Check torch trigger Open circuit voltage the mains switch is Replace control board Current outputs Replace drive board Wire feeding Gas flow Over-current Check and repair output cable Too large output Current sensor fault Trouble-shoot the signal line failure...

  • Page 35: Trouble Shooting

    5-2 Trouble shooting Note! The flowing troubles and causes are uncertain. However, during the process of MIG Pulse and the normal using conditions, that might happen. No gas Unsta Poor Wire Wire Trouble output wire weldin sticks sticks hole Remedy start feedi start...

  • Page 36: 6-Care And Maintenance

    1. Cable broken: welding cable, torch ○ ○ ○ ○ ○ trigger cable Welding 2. Loose connection with wire feeder or it is torch cable damaged 1. Cable: overlay or serious curve ○ ○ ○ ○ 1. Cable standard: not enough sectional ○...
  • Page 37  Maintenance of wire feeder - Avoid water and other strong corrosion liquid, wipe in time if contacts, keep clean of wire feeder. - As gearing equipment, wire feeder should keep lubrication and clean of rotate part, add lubricant usually. - Replace worn wire feeding rollers because of long time use which will influence wire feeding stability.

This manual is also suitable for:

Amig350-lst

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