Lincoln Electric FLEX FEED 74 HT Operator's Manual page 36

FLEX FEED™ 74 HT
Power Source
J
I
N
H
G
F
NON-LINCOLN POWER SOURCE
Pin
24 VAC to feeder
A
Welding Output Control
B
C +10VDC to feeder for remote control
D Remote control common
E 0-10VDC from feeder for remote control.
Current feedback to feeder. Scaled 0-10V. 1 V =
F
100 amps. Referenced to pin D.
24 VAC common.
G
Arc Voltage feedback to feeder. Scaled 0-10V. 1
V = 10 Arc volts. Referenced to pin D.
N Not used
NON-LINCOLN EQUIPMENT ADAPTER,
K2335-1,-2
The Flex Feed 74 HT may be used with non-Lincoln
Electric power sources that provide 24 VAC. The
power source must have the circular connector pin
definition shown in the table below for proper opera-
tion of the wire feeder. Be sure the power source pro-
vides 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 24 VAC may
result in lack of high wire feed speeds or reduced pull
force at high wire feed speeds. Approximate maxi-
mum WFS for Lincoln wire feeders operating with 24
VAC is:
20 tooth pinion gear
30 tooth pinion gear
A
K
B
L
C
M
D
E
Function
425 in/min
600 in/min
Wire Feeder
A
B
L
C
M
D
E
LINCOLN WIRE FEEDER
Pin
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 Not used
K 42 VAC to feeder
L Not used
N
Not used
A-29
INSTALLATION
J
K
I
H
N
G
F
Function