Power Up Sequence - ESAB Powercut 1600 Service Manual

SECTION 3 SPECIfICATIONS
3.3

Power Up Sequence

3.0
When the operator closes the torch switch the following occurs:
The Torch Trigger circuit is engaged
Power Board relay RL3, the Mains Contactor Relay, closes.
The Mains Contactor Closes
Power board Relay RL1, the gas solenoid relay, closes.
The gas valve opens
Full buss voltage is available
2 seconds of preflow
The piston in the torch cycles
The Control Board PCB-1 turns on the gating pulses
OCV is available
Control board PCB-1 enables the PA relay signal
The Pilot Arc IGBT passes the Pilot Arc current
Pilot Arc fires
Main Arc is established
Pilot Arc is disabled ***
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