Lincoln Electric RANGER SVM148-B Service Manual page 54

Section E-1
-THEORY OF OPERATION SECTION-
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
RANGER 300 DLX
SHUTDOWN
SOLENOID
BY-PASS
BOARD
CONTACTOR CLOSURE
OUTPUT
CONTROL
42VAC
115VAC
6 PIN
14 PIN
AMPHENOL
AMPHENOL
TABLE OF CONTENTS
FIGURE E.1
RANGER 300 BLOCK LOGIC DIAGRAM
REACTOR
GLOW PLUGS
ENGINE
MECHANICAL
ROTATION
STARTER
MOTOR
OIL &
WATER
SENSORS
IDLER
SOLENOID
ALTERNATOR
BATTERY
REMOTE
SWITCH
RANGER 300 D AND 300 DLX
RANGE
SWITCH
AC
OUTPUT
RECTIFIER
BRIDGE
AC
STATOR
ROTOR
ROTOR
SLIP
RINGS
115 & 230VAC
FIELD
RECEPTACLES
BRIDGE
PRINTED
CIRCUIT
BOARD
FIELD
CAPACITOR
Section E-1
WORK
TERMINAL
CHOKE
PART OF
RANGE
SWITCH
CAPACITORS
ELECTRODE
cv
TERMINAL
output
contactor
CONTACTOR CLOSURE