ESAB LAF 631, Instruction Manual, Page: 8 / 20

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2.2 Connection instructions for two parallel-connected welding
power sources and one PEK control box
1. Emergency stop coil W01 , is connected together with the enclosed contact block,
which in turn has been fitted on KM2 , in accordance with the diagram on page
14 (automatic welding machine) or page 15 (automation).
2. On the welding power source defined as Slave CN18 (pin 1 and 2), on AP1 , shall
be clamped for analogue control.
3. Start up both welding power sources and connect ESAT to the Master welding
power source.
4. Set parameter 762 to 1 , Master searches for the welding power source selected
as Slave.
5. Set parameter 767 to 10 , Node address on the welding power source selected
as Slave.
6. Move the ESAT connection to the welding power source defined as Slave .
7. Set parameter 10 to 16 , Slave function.
8. Set parameter 67 to 0 , with value 1 so the welding power source expects an
analogue signal.
9. Set parameter 712 to 0 , the wire feed is not controlled by the welding power
source defined as Slave.
10. Set parameter 713 to 0 , the travel motor is not controlled by the welding power
source defined as Slave.
11. Set parameter 762 to 0 , Slave does not search for another power source.
12. Set parameter 767 to 2 , Node address on the welding power source defined as
Master.
13. Set parameter 9000 to 10 , Node address for the welding power source defined
as Slave.
14. Switch off the voltage to both welding power sources.
15. Remove the clamp on CN18 (pin 1 and 2) on the Slave welding power source.
16. Remove the clamp on CN11 on the Master welding power source.
17. Connect cable W02 to the welding power sources.
18. Switch on the voltage to the Slave welding power source.
19. Switch on the voltage to the Master welding power source.
20. Check that the emergency stop coil is working, both the welding power sources
(emergency stop relay/emergency stop contactors) are switched off. After
resetting, the welding power sources start up normally and are ready for use.
21. Check that the parallel current value can be set in PEK .
For more information on component location on the circuit board, see the service
manual for the LAF welding power source.
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