Theory Of Operation; General Description - Lincoln Electric SVM154-A Service Manual

Ln-10 heads & controls boom mount or bench models

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Table of Contents

E-2

INPUT

CABLE

RECEPTACLE

42VAC

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.