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Summary of Contents for Taurus MMA-400
- Page 1 Inverter DC Manual Metal Arc Welding Machine MODELS MMA-400 & MMA-400L PRO MMA-630 & MMA-630L PRO Operation Manual Read this manual carefully before installing, operating and maintaining the machine. - 1 -...
- Page 2 Description: This machine is designed and built to weld ferrous and non-ferrous metals. Disclaimer: The information, illustrations and instructions described in this manual are based on the latest product information available at the time of publication. The manufacturer and distributors reserve the right to modify the contents of this manual at any time.
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Page 3: Table Of Contents
CONTENTS Safety precautions ................3 Warnings ..................4 Packaging and Transportation ............... 7 Parameters ..................... 8 Product Description ................8 Working Principle .................. 11 Installation and Wiring ................12 Brief Procedure for Welding Operation ..........14 Maintenance ..................15 Common Machine Malfunctions and Solutions ........16 - 2 -... -
Page 4: Safety Precautions
Safety precautions The equipment is designed for use by qualified personnel who have completed professional training and have obtained a qualification certificate as a welder. The operator shall have sufficient professional knowledge of welding, cutting and circuitry. The machine should be operated only after having read and fully understood all the safety precautions and warnings contained in this manual and those generally applicable to welding operations. -
Page 5: Warnings
Warnings Welding and cutting operations are specialised operations which present a certain degree of risk. Professional training, correct operating procedures and protective measures reduce the accident risk and damage to equipment. Personal Safety Protection Welding and cutting operations generate noise, bright light and high-temperature sparks which will cause harm to human hearing, eyes and skin unless personal protective measures are implemented and proper operational instructions are adhered to. - Page 6 Welding and cutting on sealed gas tanks will cause explosions. These operations are prohibited. Welding and cutting areas must be provided with adequate fire extinguishing equipment. Regular testing for efficiency of this equipment is compulsory as is training of staff in the use of the equipment. Once the welding/cutting operation is completed, check for any high temperature spark or metal which might cause a fire and immediately dispose of it.
- Page 7 possible and the following procedures are suggested: Welders and cutters with cardiac pacemaker implants should obtain medical advice on the effects of EMF on the implant. Welders should minimise the possibility of electromagnetic field damage through the following methods. Route the electrode and ground cables together and, where possible, secure them with tape.
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Page 8: Packaging And Transportation
Gas cylinders should be kept away from extreme temperatures and fire sources. Scratching on cylinder walls with hard objects should be avoided. A flowmeter should be installed on the gas cylinder in use in accordance with the manufacturer's operating instructions. Quick-coupling connectors must not be used and gas hose fitting should be tested for leaks. -
Page 9: Parameters
Parameters Model MMA-400 MMA-400L PRO Parameters Value 3PH-AC380V±15% 3PH-AC380V/525V Rated input voltage: 50/60Hz 50/60Hz Rated Capacity: 18.2KVA 21.5KVA Rated input current: 33.7A Rated duty cycle: Output current range: 15A-400A 15A-400A Open circuit voltage: Insulation grade: IP grade: IP21S Package dimensions(mm): 647*367*542 N.W.(kg):... -
Page 10: Product Description
Product Description The welding machine in the DC MMA welders series, inverts the 50/60Hz power supply to a high-frequency, high-voltage power supply of up to 21KHz. inversion process is facilitated by a powerful IGBT device followed by step-down rectification and pulse-width modulation (PWM) technology producing a high-power DC output suitable for welding. - Page 11 2. Appearance Diagram: Machine Layout Panel Diagram: Control panel Welding cable coupling device, negative pole: Connects to electrode holder cable set in DC electrode negative mode. Connects to earth clamp cable set in DC current electrode positive mode. Remote control box aviation socket: Connects to remote control box and control line aviation plug.
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Page 12: Working Principle
holder cable set in DC electrode negative mode. Connects to earth clamp cable set in DC current electrode positive mode. VRD function indicator light: When VRD is turned off in MMA mode, the indicator light is off. When VRD is turned on, the indicator light is lit. Current display: Output current is displayed in real time. -
Page 13: Installation And Wiring
10cm at each side. 2. Power Input Requirements The power supply waveform should be the standard sin wave, the rated voltage 380V±10% 50/60Hz. Three phase voltage unbalance should be ≤ 5 Model MMA-400 MMA-400L PRO Parameters Value Rated input current：... - Page 14 Model MMA-630 MMA-630L PRO Parameters Value Rated input current： Input cable： ≥6mm ≥10mm Output cable： 70mm 70mm Ground cable： ≥6mm ≥10mm 3. Main Power Supply Connection Pay attention to prevent electric shock Wear goggles Take note of the following when the machine is connected to the main power supply: 3.1.
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Page 15: Brief Procedure For Welding Operation
Wiring of three phase 50/60Hz welding machine Item Item Power cord Terminal block Live wire L1 Overcurrent protection device Live wire L2 Live wire L3 Earth wire terminal block Earth wire Electric control box Brief Procedure for the welding operation 1. -
Page 16: Maintenance
1.6. Connect and tighten the electrode cable to the positive pole. Use the electrode holder to clamp the electrode. 1.7. Turn the machine on - the power indicator lights up and the fan becomes operational. 1.8. Set the parameters for the welding job. The welding current is set in accordance with welding rod specifications. -
Page 17: Common Machine Malfunctions And Solutions
1.3. Whether the power switch is operational and the fan operates smoothly when the machine is switched on. 1.4. Whether cables are correctly connected, insulated and in sound order. 1.5. Torch consumables are subject to wear and tear and should be replaced when worn.. - Page 18 2. Common Machine Problems and Troubleshooting Problem Root cause What to do Check power supply phases and Power phase down. rectify. Machine is switched on, no indicator Power switch light, fan not malfunction or Repair or replace switch. operational, no damaged.
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