Voltage Sensing Lead Connections And Motor Start Control Adjustment - Miller WC-115A Manuel D'utilisation

2-4. Voltage Sensing Lead Connections And Motor Start Control Adjustment

1
Front
For CC operation, connect
voltage sensing lead to
workpiece.
Work
Tools Needed:
1/4 in
2
3
4
5
6
1 Center Baffle
2 Circuit Board PC1
3 Jumper Plug
4 Receptacle RC3
CV CC
INT. EXT.
Internal (INT) and external (EXT)
are stamped on PC1 just above
RC3. Unit is shipped with jumper
1 2 3
plug in internal (INT) position.
5 Potentiometer R70
6 Voltage Sensing Lead
For constant current welding
(CC), place jumper plug in the
EXT position. Connect voltage
sensing lead to workpiece.
For constant voltage welding (CV),
place jumper plug in the INT posi-
tion. Do not connect voltage sens-
ing lead.
To adjust motor ramp speed, re-
move protective cap (if present),
and adjust potentiometer R70 using
a small nonconductive screwdriver.
Rotating R70 clockwise increases
the time it takes the motor to ramp
up to speed.
Reinstall wrapper.
Rear View
ST-149 920-A / ST-150 035
OM-1078 Page 11