Related Manuals for ESAB Origo Mig C141
Summary of Contents for ESAB Origo Mig C141
- Page 1 Mig C141/C151 Mag C171/C201/C251 Origo ™ ™ ™ ™ Service manual 0349 300 076 080529 Valid for serial no. 736- -xxx- -xxxx...
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Page 2: Table Of Contents
READ THIS FIRST ..............INTRODUCTION . - Page 3 MAINTENANCE ..............Inspection and cleaning .
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Page 4: Read This First
READ THIS FIRST Maintenance and repair work should be performed by an experienced person, and electrical work only by a trained electrician. Use only recommended replacement parts. This service manual is intended for use by technicians with electrical/electronic training for help in connection with fault--tracing and repair. -
Page 5: Technical Data
TECHNICAL DATA Origo Mig C141 Origo Mig C151 Origo Mag C171 Voltage 220- -230V, 1∼ 50/60Hz 220- -230V, 1∼ 50/60Hz 220- -230V, 1∼ 50/60Hz Permissible load at 100% duty cycle 42A/16,1V 67A/17,4V 76A/17,8V 60 % duty cycle 54A/16,7V 87A/18,3V 98A/18,9V @ % duty cycle 83A/18,2V @ 25% 95A/18,7V @ 50%... - Page 6 Control voltage 42V, 50/60Hz 42V, 50/60Hz Wire feed speed 1,0--17m/min 1,9--19m/min Burnback time 0,02--0,25s 0--0,25s Spot welding 0,2--2,5s 0,2--2,5s Welding gun connection EURO EURO Wire dimension range 0,6--1,0(Fe) 0,6--1,2(Fe) 1,0(Al) 1,0--1,2(Al) 0,8--1,0(cored) 0,8--1,2(cored) 0,8--1,0(CuSi) 0,8--1,0(CuSi) Max diameter/weight 300mm/15kg 300mm/15kg of wire bobin Dimensions lxwxh 860x420x730 860x420x730...
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Page 7: Wiring Diagram, Mig C141 / C151
WIRING DIAGRAM, Mig C141 / C151 Component description WARNING ! STATIC ELECTRICITY can damage circuit boards and electronic components. Observe precautions for handling electrostatic S S S S sensitive devices. Use proper static- -proof bags and boxes. S S S S Circuit board C1, C2, C3 Capacitor 0,1uF/250V... -
Page 8: Mig C141
Mig C141 Edition 080529 - - 8 - - 1sC1425... -
Page 9: Mig C151
Mig C151 Edition 080529 - - 9 - - 1sC1425... -
Page 10: Description Of Operation
DESCRIPTION OF OPERATION AP1 Control board clka0e02 Edition 080529 - - 10 - - 1sC1425... -
Page 11: Ap1:1 Control Circuit
AP1:1 Control circuit Pressing trigger switch SB1 on the welding torch energises relay RE1 from control power transformer TR1. The contacts on the relay connect main transformer TM1 to the mains power supply. The power supply to RE1 is half--wave rectified by D1. Resistor R1 is connected in series with the relay and drops the voltage to it. -
Page 12: Ap1 -- Mig C141 / C151 Component Positions
AP1 - - Mig C141 / C151 component positions clka0e03 Edition 080529 - - 12 - - 1sC1425... -
Page 13: Wiring Diagram, Mag C171 / C201
WIRING DIAGRAM, Mag C171 / C201 Component description WARNING ! STATIC ELECTRICITY can damage circuit boards and electronic components. Observe precautions for handling electrostatic S S S S sensitive devices. Use proper static- -proof bags and boxes. S S S S Circuit board Digital instrument, accessory C1, C2, CVS... - Page 14 Main transformer Diode bridge LED yellow indication, thermal overload Main welding current contact, single -- pole XT1, XT4 Terminal block Gas valve Edition 080529 - - 14 - - 1sC1425...
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Page 15: Mag C171
Mag C171 Edition 080529 - - 15 - - 1sC1425... -
Page 16: Mag C201
Mag C201 Edition 080529 - - 16 - - 1sC1425... -
Page 17: Description Of Operation
DESCRIPTION OF OPERATION AP1 Control board clka1e03 Edition 080529 - - 17 - - 1sC1425... - Page 18 clka1e04 Edition 080529 - - 18 - - 1sC1425...
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Page 19: Ap1:1 Power Supply
AP1:1 Power supply clka1e06 Transformer TC1 supplies indicating lamp HL1 and rectifier bridge BR1 with 27 V AC. The unsmoothed DC output from BR1 is smoothed by capacitors C5 and C25 to produce an open--circuit voltage of 38 V ”10%. This provides the power supply for the wire feeder motor. -
Page 20: Ap1:3,4,5 Start / Stop, Thermal Overload, Spot Welding
AP1:3,4,5 Start / Stop, Thermal overload, Spot welding clka1e08 Start / Stop circuit When the torch trigger switch SB1 is not activated, the voltage between M3 and M4 is 24 V. Pressing the trigger switch shorts the circuit, producing a voltage of 0 V between M3 and M4. -
Page 21: Ap1:6 Burnback Time
AP1:6 Burnback time clka1e09 The burn--back time is the time from when wire feed ceases until contactor KM1 drops off. During welding, the voltage at pin 13 of IC2 is low. The output of the inverter at pin 14 is therefore high, turning on transistor Q2 and activating relay RE1. When the torch trigger switch is released, or when the spot welding time expires, capacitor C23 charges up via resistors R36, R37 and R38. -
Page 22: Ap1:8,9 Motor Driving / Braking
AP1:8,9 Motor driving / braking clka1e10 Motor driving circuit The output stage of the pulse width modulator is connected to transistor Q1 via resistor R16. A motor current signal is provided by measuring the voltage across resistor R4, connected to transistor Q1. If the voltage across R4 exceeds 1.1 V 60 mV, the gate pulses to Q1 are inhibited. -
Page 23: Ap1 -- Mag C171 / C201 Component Positions
AP1 - - Mag C171 / C201 component positions clka1e05 Edition 080529 - - 23 - - 1sC1425... -
Page 24: Wiring Diagram, Mag C251
WIRING DIAGRAM, Mag C251 Component description WARNING ! STATIC ELECTRICITY can damage circuit boards and electronic components. Observe precautions for handling electrostatic S S S S sensitive devices. Use proper static- -proof bags and boxes. S S S S Circuit board Digital instrument, accessory C1, C2, CVS Capacitor 0,1uF/250V... - Page 25 Main welding current contact, single -- pole XT1, XT4 Terminal block Gas valve Edition 080529 - - 25 - - 1sC1425...
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Page 26: Mag C251
Mag C251 Edition 080529 - - 26 - - 1sC1425... -
Page 27: Description Of Operation
DESCRIPTION OF OPERATION AP1 Control board AP1:1 Power supply The circuit board uses two different supply voltages: 16 V for the electronics and 42 V for power supply to the motor, contactor and gas valve. clkb0e05 Power supply to the electronic circuitry The 16 V power supply from transformer TC1 is rectified by diodes D3--D6 and regulated to 15 V by voltage regulator VR1. -
Page 28: Ap1:3 Spot Welding
Welding gun trigger switch Gas valve Wire feed Contactor T1 = Burn- -back time Start- - stop sequence. AP1:3 Spot welding clkb0e08 Spot welding is active when the switch in potentiometer RP2 is closed. Spot welding time is adjustable between 0.2 and 2.5 seconds. If the welding torch trigger switch is released while a spot weld is being made, the welding sequence will be interrupted.. -
Page 29: Ap1:5 Motor Driving / Braking
AP1:5 Motor driving / braking black clkb0e12 The motor is powered by the smoothed +60 V supply. Pulse width modulation of transistor Q5 controls the motor voltage. The pulse frequency is about 9 kHz, and maximum conduction time of the pulses is about 98 % of the pulse cycle time. -
Page 30: Ap1:6 Burnback Time, Contactor, Gas Valve
AP1:6 Burnback time, contactor, gas valve clkb0e11 Burnback time The burn--back time is the time from when motor braking starts until the main contactor opens. When welding stops, capacitor C38 is discharged through potentiometer R21. The time can be adjusted from 0 to 0.25 seconds. Energising the contactor The contactor is controlled by triac TC2. -
Page 31: Ap1 -- Mag C251 Component Positions
AP1 - - Mag C251 component positions clkb0e13 Edition 080529 - - 31 - - 1sC1425... -
Page 32: Service Instructions
SERVICE INSTRUCTIONS WARNING ! STATIC ELECTRICITY can damage circuit boards and electronic components. Observe precautions for handling electrostatic S S S S sensitive devices. Use proper static- -proof bags and boxes. S S S S What is ESD? A sudden transfer or discharge of static electricity from one object to another. ESD stands for Electrostatic Discharge. -
Page 33: Instructions
This chapter is an extract from the instructions for Mig C141/151, Mag C171/C201/C251. SAFETY Users of ESAB welding equipment have the ultimate responsibility for ensuring that anyone who works on or near the equipment observes all the relevant safety precautions. Safety precautions must meet the requirements that apply to this type of welding equipment. - Page 34 WARNING ARC WELDING AND CUTTING CAN BE INJURIOUS TO YOURSELF AND OTHERS. TAKE PRECAU- TIONS WHEN WELDING. ASK FOR YOUR EMPLOYER’S SAFETY PRACTICES WHICH SHOULD BE BASED ON MANUFACTURERS’ HAZARD DATA. ELECTRIC SHOCK - - Can kill Install and earth the welding unit in accordance with applicable standards. Do not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
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Page 35: Installation
INSTALLATION The installation must be executed by a professional. Note! Connect the power source to the electricity mains with a network impedance of (C141 - - 0,41; C151 - - N/A; C171 - - N/A; C201 - - 0,32; C251 - - 0,212) ohm or lower. If the network impedance is higher, there is a risk of flicker in the illuminators. - Page 36 Origo Mig C151 Edition 080529 - - 36 - - 2sC1425...
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Page 37: Electrical Installation
Origo Mag C171/C201/C251 Electrical installation Edition 080529 - - 37 - - 2sC1425... -
Page 38: Mains Power Supply
Mains power supply Check that the unit is connected to the correct mains power supply voltage, and that it is protected by the correct fuse size. A protective earth connection must be made, in accordance with regulations. Rating plate with supply connection data Origo Origo Origo... -
Page 39: Connection And Control Devices
WARNING - - TIPPING RISK! There is a risk of tipping while transportation and operation, if the welding machine leans more than 10 . In that case appropriate securing has to be provided ! Connection and control devices Mains supply switch with indicating lamp, Return cable with clamp, fixed, only in C171/C201/C251 only in C140/C150/C170/C200... -
Page 40: Welding Without Gas
Welding without gas Wire feed pressure Start by making sure that the wire moves smoothly through the wire guide. Then set the pressure of the wire feeder’s pressure rollers. It is important that the pressure is not too great. Fig 1 Fig 2 To check that the feed pressure is set correctly, you can feed out the wire against an insolated object, e.g. -
Page 41: Overheating Protection
Make sure that the wire goes properly into the feed roller track and into the outlet nozzle and the wire guide. Secure the pressure sensor. Close the side panel. Overheating protection When the machine is switched on with the mains switch [1] or [3] depending on machine model, indicating lamp [1] is on and lamp [2] off -- the machine is ready to operate. -
Page 42: Fault Tracing
Check the wire feed unit -- if proper rolls are applied and properly set the pressure of the wire feeder’s pressure rollers ORDERING OF SPARE PARTS Spare parts may be ordered through your nearest ESAB dealer, see the last page of this publication. Edition 080529... -
Page 43: Notes
NOTES - - 43 - - notes... - Page 44 - - 44 - - notes...
- Page 45 ESAB subsidiaries and representative offices Europe Asia/Pacific Representative offices NORWAY AS ESAB AUSTRIA BULGARIA CHINA Larvik ESAB Ges.m.b.H ESAB Representative Office Shanghai ESAB A/P Tel: +47 33 12 10 00 Vienna- -Liesing Sofia Shanghai Fax: +47 33 11 52 03...
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