13Ap1:3 Start / Stop; 13Ap1:4 Current Relay, Creep Start / Normal Start - ESAB YardFeed 200 Service Manual

13AP1:3 Start / Stop
The welding gun switch is supplied with 42 V AC. Closing the switch activates
optocoupler IC1, causing the voltage across C35 to go low.
The new version of the control board, 0487 162 880
When wire feed starts, the power source generates welding voltage. If this is
not followed by a flow of welding current within three seconds, the power
source shuts down the welding power supply, although wire feed continues
until the welding gun switch is released.
The first version of the control board, 0486 991 880
When wire feed starts, the power source generates welding voltage.
13AP1:4 Current relay, Creep start / Normal start
The new version of the control board, 0487 162 880
The first version of the control board, 0486 991 880
Current relay
The current relay operates if the welding current exceeds 20 A.
Creep Start
The creep start function is activated when switch 13SA2 is open. Creep start
means that the motor runs at a speed of 1.9 m/minute until the current relay is
activated. When the relay operates, the speed increases to the set speed.
The new version of the control board, 0487 162 880:
If the current relay does not operate within three seconds after starting, the
motor speed increases to the set speed in any case.
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S0740 800 148/E060619/P30