ESAB Feed 30w User manual

0349 300 069 Valid for serial no. 638-xxx-xxxx 120618

Origo™

Feed 30

Feed 30w

Service manual

- 2 -TOCe

Rights reserved to alter specifications without notice.

READ THIS FIRST 3.................................................................

INTRODUCTION 3...................................................................

TECHNICAL DATA 4.................................................................

WIRING DIAGRAM 5.................................................................

Component description 5..........................................................

OrigoTM Feed 30w, Feed 30* 6.....................................................

DESCRIPTION OF OPERATION 7.....................................................

A1 Control board 0349 304 491 7...................................................

A1:1a Power supply 7...........................................................

A1:2a Activation, contactor 7.....................................................

A1:3a Wire feed speed 8........................................................

A1:4a Start / Stop 8............................................................

A1:5a Mode selector switch 8....................................................

A1:6a Creep start 9.............................................................

A1:7a Current relay 10...........................................................

A1:8a Burn-back time 10.........................................................

A1:9a Gas valve 10..............................................................

A1:10a Motor driving / braking 11...................................................

A1 Component positions 12....................................................

SERVICE INSTRUCTIONS 13..........................................................

What is ESD? 13...................................................................

NOTES 14...........................................................................

S0349 300 069/E120618/P16

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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.

Use the wiring diagram as a form of index for the description of operation. The circuit

board is divided into numbered blocks, which are described individually in more detail in

the description of operation. All component names in the wiring diagram are listed in the

component description.

This manual contains details of design changes that have been made up to and including

June 2007.

The Origo

TM

Feed 30 and Feed 30w are designed and tested in accordance with

international and European standards IEC-/EN 60974-5.

On completion of service or repair work, it is the responsibility of the person(s) performing

the work to ensure that the product still complies with the requirements of the above

standard.

CAUTION

Read and understand the instruction manual before

installing or operating.

INTRODUCTION

Feed 30, Feed 30w wire feed unit is intended for MIG/MAG welding together with

step controlled welding power sources, with solid steel, stainless steel, aluminium

wire and flux-cored wires.

S0349 300 069/E120618/P16

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TECHNICAL DATA

Feed 30, Feed 30w

Power supply 42V, 1∼50/60 Hz

Power requirement 420 VA

Welding current at 60% duty cycle 500 A

Settings data

Wire feed speed 1,5-25 m/min

Burnback time 0,0-0,7 sec

Spot welding time 0,2-5,0 sec

Welding gun connection EURO

Wire dimension range 0,8-1,6 (Fe,SS);

1,0-1,6 ( Al);

1,0-1,6 (FCW)

Shielding gas All types for MIG/MAG - max 5 bar

Max diam. / weight of wire bobin 300 mm / 18kg

Dimensions lxwxh 700x255x420

Weight 14,8 kg (Feed 30)

with cooling liquid system 15,0 kg (Feed 30w)

Operating temperature -10 to +40

o

C

Transportation temperature -20 to +55

o

C

Enclosure class IP 23 (wire bobbin - IP 2X)

Application classification

Duty cycle

The duty cycle refers to the time as a percentage of a ten-minute period that you can weld or cut at

a certain load without overloading. The duty cycle is valid for 40° C.

Enclosure class

The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid

objects or water. Equipment marked IP23 is designed for indoor and outdoor use.

Enclosure class

The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid

objects or water. Apparatus marked IP2X are intended for indoor use.

Application class

The symbol indicates that the power source is designed for use in areas with increased

electrical hazard.

S0349 300 069/E120618/P16

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WIRING DIAGRAM

Component description

CAUTION

STATIC ELECTRICITY can damage circuit

boards and electronic components.

S Observe precautions for handling electrostatic-

sensitive devices.

S Use proper static-proof bags and boxes.

ESD

This component description refers to the wiring diagram.

A1 Main circuit board with control electronics.

M1 Motor.

R1 Potentiometer, 2.2 kΩ, for setting the wire feed speed.

R2 Potentiometer, 100 kΩ, for setting the burn-back time.

R3 Potentiometer, 100 kΩ, for setting the spot welding time.

S1 2/4-stroke, spot welding, inching and gas purging change-over switch.

S2 Switch, creep start ON/OFF.

XS1

28-pole panel socket, for connection to the welding power source.

K1 Gas valve.

H1 LED lamp 42V AC.

S0349 300 069/E120618/P16

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Origo

TM

Feed 30w, Feed 30

*

S4 (ELP) not applied for Feed 30

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DESCRIPTION OF OPERATION

A1 Control board 0349 304 491

This description is valid for control board 0349 304 491, which is fitted in Feed 30, Feed 30w.

A1:1a Power supply

The feeder obtains a 42 V supply from the control power supply transformer in

the power source.

42 V AC is used for power supply to the gas solenoid valve and the main

contactor. It is also used for the motor drive circuits.

The 42 V is rectified and then reduced to +15 V by resistors R65 - R67 and

zener diodes V30 and V31.

A1:2a Activation, contactor

The start signal to the power source is connected to board contact X3.9. The

contactor is energised via triac V22.

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A1:3a Wire feed speed

The wire feed speed range is from 1.5 to 22 meters per minute.

Potentiometer R8 is used to adjust the maximum wire feed speed and

potentiometer R1 sets the minimum speed. Adjust R8 first and then R1.

A1:4a Start / Stop

The wire feed unit starts when the welding gun switch closes.

A1:5a Mode selector switch

2-stroke

When switch 13SA1 is in position 1, all input terminals are open, and the unit

operates in 2-stroke mode. Operating the trigger on the welding gun starts the

motor, opens the gas valve and energises the power unit contactor.

Releasing the trigger stops the motor, de-energises the contactor and closes

the gas valve. If burn-back mode is in operation, welding ceases when the

burn-back time has elapsed.

4-stroke

When switch 13SA1 is in position 2, input terminal X1.8 is connected to +15 V,

and the unit operates in 4-stroke mode. Operating the trigger on the welding

gun opens the gas valve: releasing the trigger then starts the motor and

energises the power source contactor.

Operating the trigger switch for a second time stops the motor and

de-energises the contactor in the power source: releasing the switch then

closes the gas solenoid valve. If burn-back mode is in operation, welding

ceases when the burn-back time has elapsed.

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Spot welding

The start sequence is the same as for the 2-stroke mode.

When the spot welding time has elapsed, the motor stops, the contactor

de-energises and the gas valve closes. If burn-back mode is in operation,

welding ceases when the burn-back time has elapsed.

The welding time can be adjusted by potentiometer 13RP3.

Inching

Pressing the trigger switch, starts the wire feed. The gas valve and contactor

are not activated.

Gas purging

Pressing the trigger switch, opens the gas valve. The wire feed and contactor

are not activated.

A1:6a Creep start

Creep start means that the motor runs at 50% of the set speed until the current

relay operates, after which the speed increases to the set speed.

Selector switch 13SA2 selects creep start On/Off. Closing the switch on to the

+15 V supply engages creep start.

The creep start function is disabled during inching.

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A1:7a Current relay

The current relay is activated when the welding current exceeds 20 A.

A1:8a Burn-back time

The burn-back time is the time from when motor braking starts until the main

contactor in the power source opens. It can be adjusted between 0 and 0.7

seconds by potentiometer 13RP2.

A1:9a Gas valve

The gas valve is connected to board contacts X3.7 and X3.8. The valve is

energised via triac V23.

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ESAB Feed 30w, Feed 30 User manual

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