ESAB Feed 30 wire feed unit is designed for MIG/MAG welding with solid steel, stainless steel, aluminum wire, and flux-cored wires. It offers precise wire feed speed control, adjustable burnback time, and spot welding function. The 2-stroke, 4-stroke, spot welding, inching, and gas purging modes provide versatility for various welding applications. The creep start feature ensures smooth wire feeding at the start of welding. With a wide wire dimension range and compatibility with different shielding gases, ESAB Feed 30 is a reliable choice for professional welding tasks.
ESAB Feed 30 wire feed unit is designed for MIG/MAG welding with solid steel, stainless steel, aluminum wire, and flux-cored wires. It offers precise wire feed speed control, adjustable burnback time, and spot welding function. The 2-stroke, 4-stroke, spot welding, inching, and gas purging modes provide versatility for various welding applications. The creep start feature ensures smooth wire feeding at the start of welding. With a wide wire dimension range and compatibility with different shielding gases, ESAB Feed 30 is a reliable choice for professional welding tasks.
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
© ESAB AB 2007
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cm56_00
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
© ESAB AB 2007
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cm56_00
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
© ESAB AB 2007
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cm56_00
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.
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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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cm56_01
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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cm56_01
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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cm56_01
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 30 wire feed unit is designed for MIG/MAG welding with solid steel, stainless steel, aluminum wire, and flux-cored wires. It offers precise wire feed speed control, adjustable burnback time, and spot welding function. The 2-stroke, 4-stroke, spot welding, inching, and gas purging modes provide versatility for various welding applications. The creep start feature ensures smooth wire feeding at the start of welding. With a wide wire dimension range and compatibility with different shielding gases, ESAB Feed 30 is a reliable choice for professional welding tasks.
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