ESAB Origo Mig L305 User manual

Origo™
Service manual
0349 300 067 GB 20200225
Valid for:
MigL305:serialno.628-,647-,211-,331-,746-xxx-xxxx
MigL405:serialno.628-,647-,211-,331-,730-xxx-xxxx
MigL305, MigL405

TABLE OF CONTENTS
0349 300 067 © ESAB AB 2020
READ THIS FIRST.................................................................................... 3
INTRODUCTION....................................................................................... 4
TECHNICAL DATA ................................................................................... 5
WIRING DIAGRAM................................................................................... 8
Component description ......................................................................... 8
Origo™ Mig L305 .................................................................................... 8
Origo™ Mig L405 .................................................................................... 10
DESCRIPTION OF OPERATION.............................................................. 13
P1 Digital instrument.............................................................................. 13
P1:1 Calibration and voltage correction ............................................... 13
P1:2 Connections to the digital instrument........................................... 14
SERVICE INSTRUCTIONS....................................................................... 15
What is ESD? .......................................................................................... 15
Thermal switch (thermostat) replacement procedure ........................ 15
Rights reserved to alter specifications without notice.

READ THIS FIRST
0349 300 067 -3- © ESAB AB 2020
READ THIS FIRST
The 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 all design changes that have been made up to and including
November 2017.
The Origo™ Mig L305, Mig L405 are designed and tested in accordance with
international and European standard IEC/EN 60974-1 and EN 60974-10.
On completion of service or repair work, it is the responsibility of the person(s) etc.
performing the work to ensure that the product does not depart from the
requirements of the above standard.

INTRODUCTION
0349 300 067 -4- © ESAB AB 2020
INTRODUCTION
The Origo™ Mig L305, Mig L405 are step switched power sources designed for
MIG/MAG-welding together with wire feed units OrigoFeed.
The power units are fan-cooled and equipped with thermal overload protection.
The equipments can be fitted with an instrument that displays current and voltage.
It incorporates a hold function and can be calibrated.

TECHNICAL DATA
0349 300 067 -5- © ESAB AB 2020
TECHNICAL DATA
Valid for serial no. 628-,647-,211- and 331-xxx-xxxx
Mig L305 Mig L405 Mig L405
Voltage 400-415 V,
3~50/60Hz
400-415 V,
3~50/60Hz
230/400-415/500V 3~50Hz
230/440-460V 3~60Hz
Permissible load
at 100% duty cycle 150 A 280 A/28 V 280 A/28 V
at 60% duty cycle 190 A 365 A/32 V 365 A/32 V
at 50% duty cycle - 400 A/34 V 400 A/34 V
at 25% duty cycle 300 A - -
Setting range (DC) 30 A/15 V-300A/29V 50A/16.5V -
400A/34V
50A/16.5V - 400A/34V
Open circuit voltage 17-40 V 17-45 V 17-45 V
Open circuit power 190 W 360 W 360 W
with cooling unit - 600 W 600 W
Efficiency at max
current
69% 71% 71%
Power factor at max
current
0.97 0.98 0.98
Control voltage 42 V, 50/60 Hz 42 V, 50/60 Hz 42 V, 50/60 Hz
Dimensions l×w×h 782 × 425 × 830 812 × 552 × 925 812 × 552 × 925
Weight 89 kg 142 kg 143 kg
with cooling unit - 156 kg 156 kg
Operating
temperature
-10 to +40 °C -10 to +40 °C -10 to +40 °C
Transportation
temperature
-20 to +55 °C -20 to +55 °C -20 to +55 °C
Enclosure class IP 23 IP 23S IP 23S
Application class
Cooling unit (100% duty cycle) for Mig L405
25°C 40°C
P1L/min for 400–415 V 970 W 440 W
P1L/min for 230 V 940 W 430 W
Pmax 3.5 bar
Coolant ESAB ready mixed coolant (see the "ACCESSORIES" chapter in
the instruction manual)
Coolant quantity 5.5 l