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GENERAL DESCRIPTION
The LN-10 is a single head, 42 VAC input, 4-roll wire
feeder. A single control with dual procedure presetta-
bility of wire feed speed (inches per minute or meters
per minute) and arc voltage is used in conjunction
with a Lincoln constant voltage (CV) welding power
source.
The LN-10 wire feeders have controls providing key-
pad or remote selectability of either of two proce-
dures. Also offered are four independently selectable
gun trigger modes for each procedure; cold feed, 2-
step and 4-step trigger and spot weld. The unit incor-
porates 4 selectable, presettable timers for each pro-
cedure. Preflow, postflow, burnback and spot weld
can all be preset.
Arc starting can be optimized for each procedure with
5 selectable wire feed acceleration rates. A gas
purge key is provided, as well as cold feed forward
and reverse keys with independently adjustable for-
ward feed speed settings.
E-2
THEORY OF OPERATION
LN-10
E-2
FIGURE E.1 — LN-10 GENERAL DESCRIPTION.
CONTROL BOARD
SOLENOID
WIRE DRIVE
RECEPTACLE
WIRE
DRIVE
MOTOR
TACH FEEDBACK
INPUT
CABLE
RECEPTACLE
42VAC
VOLTS
ENCODER
WFS
ENCODER
DISPLAY
BOARD
KEYPAD
GROUND
LEAD
PROTECTOR
CURRENT SENSING
REED SWITCH
TO GUN TRIGGER
AND
DUAL PROCEDURE
OPTIONAL
ROBOTIC
INTERFACE
MODULE
OPTIONAL
REMOTE
CONTROL
KIT
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