Lincoln Electric SVM120-A service manual Table of Contents Theory of Operation Section

Models: SVM120-A

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Section E-1

Section E-1

TABLE OF CONTENTS

-THEORY OF OPERATION SECTION-

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Theory of Operation

Section E

Battery, Starter, Engine, Glow Plugs, Engine Protection, Rotor, Stator, and

 

Idler Solenoid

E-2

Rotor Field Feedback, Auxiliary and Wire Feeder Power

E-3

Weld Winding, Reactor, and Range Switch

E-4

Output Bridge, Choke, Polarity Switch, CV Contactor, and Output Terminals

E-5

 

 

RANGE

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

AC

OUTPUT

RANGE

 

POLARITY SWITCH

 

 

 

 

PART OF

CHOKE

 

 

 

 

RECTIFIER

SWITCH

 

 

 

 

 

 

 

 

 

 

AC

BRIDGE

CAPACITORS

 

 

 

REACTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cv

 

 

 

 

 

 

output

SHUTDOWN

 

 

 

 

 

contactor

 

 

 

 

 

 

SOLENOID

 

 

 

 

 

 

 

 

STATOR

 

 

 

 

GLOW PLUGS

 

 

 

 

 

 

ENGINE

MECHANICAL

ROTOR

 

 

 

 

ROTOR

 

 

 

 

 

ROTATION

 

 

 

 

STARTER

SLIP

 

 

 

 

 

 

 

 

 

MOTOR

 

RINGS

 

 

 

 

REGULATOR

 

 

 

 

 

 

ALTERNATOR

IDLER

 

 

 

 

 

 

SOLENOID

 

 

 

 

 

 

 

FIELD

115 & 230VAC

 

 

 

 

BRIDGE

RECEPTACLES

 

 

BATTERY

 

PRINTED

 

 

 

 

ENGINE

 

 

 

 

 

 

CIRCUIT

 

 

 

 

PROTECTION

 

 

 

 

 

RELAY

 

BOARD

 

 

 

 

 

 

FIELD

 

 

 

 

 

 

CAPACITOR

 

 

 

 

BY-PASS

 

 

 

 

 

 

BOARD

 

 

 

CONTACTOR CLOSURE

 

 

 

 

 

 

OUTPUT

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

REMOTE

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

42VAC

 

 

 

 

 

 

115VAC

 

 

 

 

 

 

6 PIN

14 PIN

AMPHENOL

AMPHENOL

 

FIGURE E.1 – RANGER 10-LX BLOCK LOGIC DIAGRAM

WORK

TERMINAL

ELECTRODE TERMINAL

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Lincoln Electric SVM120-A service manual Table of Contents Theory of Operation Section