ESAB Precision Plasmarc EPP-600, Instruction Manual, Page: 38 / 90

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4.4.1 enable/Disable arc Initiation conditions
sectIon 4 operatIon
1. Remove access panel on the upper-right corner of the front panel. Be sure to replace this panel after adjustments have
been made.
2. Locate SW1 and PCB1 and push both rocker switches down to disable. To enable push both switches up. (If one switch
is up and the other is down, arc initiation time is considered on.)
4.4.2 adjusting arc Initiation Dwell timer
Dwell Time is controlled by selections of positions 1 through 4 of SW2 on PCB1. When a switch is pushed on, its value is
added to the minimum dwell time of 10 msec.
Switch #1 = 10 msec dwell time
Switch #2 = 20 msec dwell time
Switch #3 = 40 msec dwell time
Switch #4 = 80 msec dwell time
The default setting is with switch #3 on. 40 msec + 10 msec (minimum) = 50 msec
4.4.3 adjusting the Minimum start current
Minimum Start Current is controlled by selection of positions 5 through 8 of SW2. When a switch is pushed on, its value is
added to the factory set minimum value of 5A.
Switch #5 = 40A min. start current
Switch #6 = 20A min. start current
Switch #7 = 10A min. start current
Switch #8 = 5A min. start current
Default setting is with 5, 6, 7 and 8 off (down) 0A + 0A + 0A + 5A = 5A
Factory default settings shown
Factory default setting shown.
1 2 3 4 5 6 7 8
SW2
SW1
on
off
1 2 3 4 5 6 7 8
SW 2
on
off
SW2
1 2 3 4 5 6 7 8