Lincoln Electric IM763 Commander 500 - Manual (Page 16)

A-8 INSTALLATION
COMMANDER 500
A-8
CONNECTION OF LINCOLN
ELECTRIC WIRE FEEDERS
Shut off welder before making any electrical connec-
tions.
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CONNECTION OF THE LN-25 TO THE
COMMANDER 500
The LN-25 with or without an external contactor may
be used with the Commander 500. See the appropri-
ate connection diagram in the DIAGRAMS section.
NOTE: The LN-25 (K431) Remote Control Module and
(K432) Remote Cable are not recommended for use
with the Commander 500.
• Shut the welder off.
• For electrode Positive, connect the electrode cable
from the LN-25 to the “ + ” terminal of the welder and
work cable to the “ - ” terminal of the welder. For elec-
trode Negative, connect the electrode cable from the
LN-25 to the
“ - ” terminal of the welder and work
cable to the “ + ” terminal of the welder.
• Attach the single lead from the front of the LN-25 to
work using the spring clip at the end of the lead. This
is a sense lead to supply current to the wire feeder
motor; it does not carry welding current.
• Set the SELECTOR switch to the “ CV-WIRE ” posi-
tion.
• Set the “ WELDING TERMINALS ” switch to “ WELD
TERMINALS ON ”
• Adjust the “ ARC CONTROL ” knob to desired crisp-
ness. Generally, welding is best if the “ ARC CON-
TROL ” is set to SOFT for MIG and CRISP for
Innershield. You may however, want to start in the
middle and adjust (as needed) from there.
• If you are using an LN-25 with an internal contactor,
the electrode is not energized until the gun trigger is
closed.
If you are using an LN-25 without an internal contactor,
the electrode will be energized when the Commander
500 is started.
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• When the gun trigger is closed, the current sensing
circuit will cause the wire to feed and the welding
process will start.
CONNECTION OF LN-7 OR LN-8 TO THE
COMMANDER 500
• Shut the welder off.
• Connect the LN-7 or LN-8 per instructions on the
appropriate connection diagram in the DIAGRAMS
section.
• Set the “ WIRE FEEDER VOLTMETER ” switch to
either “ + ” or “ - ” as required by the electrode being
used.
• Set the “ SELECTOR ” switch to the “ CV-WIRE ” posi-
tion.
• Adjust the “ ARC CONTROL ” knob to desired
Crispness. SOFT for MIG and CRISP for Innershield.
• Set the “ WELDING TERMINALS ” switch to the
“ REMOTELY CONTROLLED ” position.
WARNING
CAUTION