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LF-72/74
INSTALLATION
AA-8 AA-8
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ANALOG MILLER CONTROL CABLE
ADAPTER K2335-1
This Lincoln Electric wire feeder may be mounted to a
limited number of Miller Electric power sources. The
Miller power source must have the circular connector
pin definition shown in the table below for proper oper-
ation of the wire feeder. Be sure the Miller power
source provides 24 VAC to the wire feeder and has
overcurrent protection of no more than 15 amps. The
power source must not exceed 113VDC peak.
Operation of Lincoln wire feeders on Miller power
sources may result in lack of high wire feed speeds or
reduced pull force at high wire feed speeds.
Approximate maximum WFS for Lincoln wire feeders
operating with 24 VAC:
A
B
C
D
I
E
F
G
H
J
K
L
M
N
A
I
H
G
B
F
E
D
C
J
K
N
M
L
W
IRE FEEDERPOWER SOURCE
MILLER POWER SOURCE
Pin Function
A 24 VAC to feeder
B Welding Output Control
C +10VDC to feeder for remote control
D Remote control common
E 0-10VDC from feeder for remote control.
F Current feedback to feeder.
Scaled 0-10V. 1 V = 100 amps.
Referenced to pin D.
G 24 VAC common.
H Arc Voltage feedback to feeder.
Scaled 0-10V. 1 V = 10 Arc volts.
Referenced to pin D.
N
LINCOLN WIRE FEEDER
Pin Function
I 42 VAC feeder
D Welding Output Control
C Welding Output Control
E Remote Voltage Control ("+" supply, from
power source)
G Remote Voltage Control ("-" supply, from
power source)
F Remote Voltage Control (control signal from
feeder or remote.)
J Reserved for future use.
K 42 VAC to feeder
L Reserved for future use.
N Electrode voltage to power source (67)
Miller is a registered trademark not owned or licensed by The Lincoln Electric Company.
LF-72
LF-74
LF-74, extra torque
720 ipm
720 ipm
360 ipm