Arc Initiation Controls; Start Current And Up-Slope Timer - ESAB ESP-400C Installation, Operation And Maintenance Manual

SECTION 4

4.4.3 Arc Initiation Controls

Start Current Pot

4.4.4 Start Current and Up-Slope Timer

Starting Curent (%) and Pot Setting
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0 1 2 3
Start Current Pot Setting
SW2
Relationship
4 5 6 7 8 9
ESP 400C Plasma Power Source ESP 400C Plasma Power Source ESP 400C Plasma Power Source ESP 400C Plasma Power Source
UP-Slope Timer
Start Current Start Current
Start Current Start Current
Set using potentiometer located above and to the
left of center of PCB1. Factory default setting is 7.
Up-Slope Timer Up-Slope Timer Up-Slope Timer Up-Slope Timer
Three position switch located next to the start
current potentiometer. Time is from start current
(after dwell ends) to full current. Factory default =
800 msec.
Left position = 250 msec
Center position = 800 msec
Right Position = 1200 msec
10 MAX
Operation
SW1
4-7