Lincoln Electric SVM134-A service manual Table of Contents Theory of Operation Section

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Section E-1 Section E-1

TABLE OF CONTENTS

-THEORY OF OPERATION SECTION-

Theory of Operation	Section E
General Description	E-2
Battery, Starter, Engine Alternator and Oil Switch Circuit	E-2
Engine, Main Generator Armature and Frame and DC Exciter	E-3
Excitation (Flashing)	E-3
Main Shunt, Interpole and Series Coils	E-3
Current Range Selector	E-4
Fine Current Adjustment	E-4
Engine Idler Circuit	E-4
DC Generator Machines	E-5

							SELECTOR
							SWITCH
								REED
		IDLER						RELAY	NEGATIVE
		BOARD						CR2
									OUTPUT
									TERMINAL
	ENGINE	OIL
	HOUR	PRESSURE
	METER	LIGHT
			IDLER
		SOLENOID
		OIL			GENERATOR
		PRESSURE				FRAME
		SWITCH
				SERIES				RESIDUAL
				COILS
								MAGNETISM
	FUEL
	SHUTDOWN							SHUNT
					BRUSHES &	COMMUTATOR		FIELD
SWITCH		ENGINE	MECHANICAL	GENERATOR			ARMATURE	EXCITER	115 VDC
								DC
	ENGINE		COUPLING	ARMATURE			SHAFT	ARMATURE	RECEPTACLE
IGNITION	IGNITION
	ENGINE
	ALTERNATOR
								SERIES
				INTERPOLE				FIELD
				COILS
		STARTER
		MOTOR			FIELD
					SHUNT
					WINDINGS
	BATTERY
							GENERATOR
							FIELD CONTROL		POSITIVE
									OUTPUT
									TERMINAL

FIGURE E.1 – CLASSIC I BLOCK LOGIC DIAGRAM

CLASSIC I