Lincoln Electric IM733 LN-15 WIRE FEEDER - Manual (Page 10)

A-3 INSTALLATION
LN-15 ACROSS THE ARC MODEL
A-3
WELD CABLE CONNECTIONS
ELECTRIC SHOCK CAN KILL.
• ONLY A QUALIFIED ELECTRICIAN SHOULD
CONNECT THE ELECTRODE LEADS TO THE
LN-15. CONNECTIONS SHOULD BE MADE IN
ACCORDANCE WITH ALL LOCAL AND
NATIONAL ELECTRICAL CODES. FAILURE
TO DO SO MAY RESULT IN BODILY INJURY
OR DEATH.
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The size of the electrode cable and work cable must
be sufficient for the maximum weld current and total
cable length used.
To avoid interference problems with other equipment
and to achieve the best possible operation, route all
cables directly to the work or wire feeder. Avoid
excessive lengths and do not coil excess cable. Be
sure the connection to the work makes tight metal-to-
metal electrical contact. (See Table A.1)
ELECTRODE CONNECTION
Route the electrode cable through the strain relief in
the rear of the case. Connect the electrode cable to
the LN-15 input stud using the mounting hardware
provided. Secure the cable by tightening the strain
relief.
All units are supplied with an optional pigtail for cus-
tomers that prefer to make a taped and bolted con-
nection externally.
WORK CONNECTION
Connect a work lead of sufficient size between the
proper output stud on the power source and the work.
Be sure the connection to the work makes tight metal
to metal electrical contact. Poor work lead connec-
tions can result in poor welding performance.
POWER SOURCE CONNECTION
The LN-15 can be used with any DC welding power
source. A constant voltage power source is recom-
mend; however, the LN-15 can also be used with a
constant current power source as long as the open
circuit voltage is less than 110VDC.
TO PREVENT POSSIBLE DAMAGE TO THE LN-15, DO NOT
CONNECT THE LN-15 TO NON-LINCOLN TIG OR SQUARE
WAVE POWER SOURCES. TIG HIGH FREQUENCY SHOULD
NEVER BE APPLIED TO THE LN-15.
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WARNING
CAUTION
Weld Current Total Cable Length
60% Duty (electrode cable + work cable)
Cycle 50 - 100' 100 - 150' 150 - 200' 200 - 250'
(15-30 m) (30 - 46m) (46 - 61m) (61m - 76m)
200 Amps 2 AWG 2 AWG 1 AWG 1/0
300 Amps 1 AWG 1 AWG 1/0 2/0
400 Amps 2/0 2/0 3/0 3/0
TABLE A.1
GUN AND CABLE ASSEMBLIES
A variety of Lincoln 10' (3.0m) or 15' (4.6m) gun and
cable assemblies are available for use with the LN-15,
including the Magnum™ models for GMAW, K126 or
K115 models for Innershield®.
The LN-15 comes factory equipped with a K1500-2
gun connection kit, designed for guns having a
Tweco™ #2-#4 connector. Many other guns can easi-
ly be used with the LN-15 with other K1500 series gun
connection kits.
Gun Cable Connection to the Feeder
Lay the cable out straight. Insert the connector on the
welding conductor cable into the brass bushing on the
front of the wire drive unit. Keep the all mating sur-
faces clean. Make sure it is fully seated and tighten
the thumb screw.
Connect the control cable plug into the 5 pin recepta-
cle on the front panel of the wire feeder.
ELECTRODE POLARITY
The LN-15 automatically adjusts for positive and neg-
ative polarity. When welding with negative polarity
procedures, the voltmeter will display a "-" sign; exam-
ple "-23.6" Volts.
CONTROL CABLE CONNECTIONS
Across the Arc LN-15 models do not use a control
cable.
Table A.2 Trigger Connector J1 (5 Pin)
PIN
Lead # Function
A 556 Trigger
B - Not used
C 554 Trigger/ 83%
Procedure ground
D 555 83% Procedure
E 554 Trigger/ 83%
Procedure ground