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CONNECTION OF THE LN-25 TO THE
COMMANDER 300 “ACROSS THE ARC”
(SEE FIGURE C.6.)
1. Shut the welder off.
2. Connect the electrode cable from the LN-25 to the
“-” terminal of the welder. Connect the work cable
to the “+” terminal of the welder.
NOTE: Welding cable must be sized for current and
duty cycle of application.
NOTE: Figure C.6 shows the electrode connected for
negative polarity. To change polarity, shut the welder
off and reverse the electrode and work cables at the
Commander 300 output terminals. Reverse the LN-25
polarity switch.
3. Attach the single lead from the LN-25 to the work
using the spring clip on the end of the lead. This is
only a sense lead – it carries no welding current.
4. Place the IDLER switch in the “AUTO” position.
If you are using an LN-25 without an internal contactor,
the electrode will be “HOT” when the Commander 300
is started.
5. Set the OUTPUT RANGE switch to “WIRE
WELDING CV.”
6. Set the WELDING TERMINALS switch to 'WELD-
ING TERMINALS ALWAYS ON.”
7. Set the VOLTMETER switch to “+” or “-” depend-
ing on the polarity chosen.
8. Adjust wire feed speed at the LN-25.
9. Set the LOCAL/REMOTE switch to “REMOTE” if
a K444-1 remote control is used.
10. Adjust the ARC CONTROL to the desired level
(“soft” or “crisp”).
ACCESSORIES
C-9 C-9
COMMANDER 300
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CAUTION
FIGURE C.6
COMMANDER 300/LN-25 ACROSS THE ARC CONNECTION DIAGRAM
AMPHENOL
TO WORK
WORK CLIP LEAD
LN-25
WIRE FEEDER
OPTIONAL K444-1
REMOTE CONTROL
TO WORK
ELECTRODE
AMPHENOL
6 PIN
14 PIN
TO WORK