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CONNECTION OF THE LN-25 TO THE
V350-PRO “ACROSS THE ARC” WITH
OPTIONAL 6 PIN K857 REMOTE CON-
TROL.
1. Remove input power to the V350-PRO.
2. Connect the electrode cable to the output terminal
of polarity required by the electrode. Connect the
work lead to the other terminal. Welding cable
must be sized for current and duty cycle of the
application.
3. Connect the K857 remote control to the 6-pin
amphenol on the V350-PRO.
4. Attach the single lead from the LN-25 control box
to the work using the spring clip on the end of the
lead. This is only a control lead - it carries no
welding current.
5. Set the voltmeter switch to the electrode polarity
chosen.
6. Set “CONTROL SELECT” to “REMOTE”.
7. Set the “MODE” to the “CV-WIRE” position.
8. Set “WELD TERMINALS SELECT” to the “ON”
position.
If you are using an LN-25 without an internal con-
tactor, the electrode will be “HOT” when the V350-
PRO is energized.
9. Set the “ARC CONTROL” to the “O” position and
then adjust to suit.
ACCESSORIES
C-3 C-3
V350-PRO
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CAUTION
NOTE: Illustration shows electrode connected for negative polarity.
Figure C.2 V350-PRO/LN-25 ACROSS THE ARC CONNECTION DIAGRAM WITH K857
REMOTE CONTROL
+ -
6 pin
Amphenol
To Work
Electrode Cable
LN-25
Wire Feeder
Work Clip Lead
To Work
K857
Remote Control