Theory Of Operation - Lincoln Electric OUTBACK SVM204-A Service Manual

E-3
FIGURE E.3 - ENGINE STARTING, PROTECTION AND BATTERY CHARGING
OIL LEVEL
OIL INDICATOR
LEVEL
MODULE
(KOHLER)
OIL LEVEL
SWITCH
IGNITION
/
STARTER
SOLENOID
10 AMP
FUSE
OFF
AUTO
HIGH
_ _
+ +
START
BATTERY
ENGINE STARTING, PROTECTION
AND BATTERY CHARGING (contin-
ued)
BATTERY CHARGING
The Kohler engine has a built-in battery charging sys-
tem. Output from the charging system is applied to the
PC board where it is stabilized by the battery and then
used to power the board electronics, the generator
flashing system, and the hour meter. The remaining
output exits the PC board, is routed through a fuse
located inside the control box, and applied to the bat-
tery.

THEORY OF OPERATION

AUXIIARY WINDINGS
SLIP
_ +
RINGS
ENGINE ROTOR
BRUSHES
EXCITER
IDLE
ALTERNATOR WINDING
SOLENOID
ENGINE
SHUTDOWN
RELAY
HOUR
METER
FIELD / CONTROL PC BOARD
NOTE: Unshaded areas of Block Logic
Diagram are the subject of discussion
OUTBACK® 185
CURRENT
120 VAC RECEPTACLES
SENSOR
REACTOR
STATOR
WELD
WINDINGS
BOOST
WINDING
AUTOMATIC OUTPUT
IDLER CONTROL CIRCUIT
CIRCUIT
NOTE: The engine charging system must be function-
al for the Outback® 185 to produce weld or auxiliary
output.
NOTE: The battery must remain connected at all times.
If the battery is disconnected while the machine is run-
ning, unstable voltage from the charging system will
likely cause the PC board electronics to malfunction
and may cause permanent damage to the PC board.
240 VAC
RECEPTACLE
CB1 CB3
CB2 CB4
+
CHOKE
OUTPUT
OUTPUT
RECTIFIER
STUDS
(2 PHASE)
OUTPUT
CONTROL
E-3