Lincoln Electric SVM192-A Theory Of Operation, Return to Section Section TOC, EAGLE 10,000

E-2	THEORY OF OPERATION	E-2
	FIGURE E.2 – BATTERY, STARTER, ENGINE, ROTOR, STATOR AND IDLER SOLENOID

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MECHANICAL

ROTATION

STARTER ENGINE

FLYWHEEL

ALTERNATOR

IDLER

SOLENOID

BATTERY

OUTPUT

CONTROL

RANGE

SWITCH

	AC
	OUTPUT	CHOKE	POSITIVE
REACTOR	AC BRIDGE		TERMINAL
			NEGATIVE
			TERMINAL

STATOR

ROTOR

SLIPROTOR

RINGS

STATOR

TOROID

FIELD

CAPACITOR

115 & 230VAC

RECEPTACLES

TOC

TOC

PRINTED CIRCUIT

BOARD

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BATTERY, STARTER, ENGINE, ROTOR, STATOR, AND IDLER SOLENOID

The 12VDC battery powers the starter motor. When the engine is started and running, the battery circuit voltage is fed, through the printed circuit board, to the rotating field coil in the rotor via a brush and slip ring configuration. This excitation (“flashing”) voltage mag- netizes the rotor lamination. The rotor is mechanically coupled to the engine. This rotating magnet induces a voltage in the stationary windings of the main alterna- tor (stator). Three separate and isolated windings are incorporated in the stator lamination assembly. Each winding set has a different number of turns producing different magnitudes of AC output voltages. The three windings are the weld winding, the auxiliary power

winding and the field feedback winding. The field feed- back winding provides rotor current during machine operation. The output of the EAGLE 10,000 is depen- dent on two criteria: the engine RPM and the amount of current in the rotor winding.

The flywheel alternator, located on the engine, supplies “charging” current for the battery circuit. The battery circuit provides power for the printed circuit board and also for the idler solenoid. The idler solenoid is mechanically connected to the engine throttle linkage. If no current is drawn from the EAGLE 10,000, the printed circuit board activates the idler solenoid, which then brings the engine to a low idle state. When either weld or auxiliary output current is sensed by the toroid the printed circuit board deactivates the idler solenoid, and the engine goes to high RPM. After 12 to 15 sec- onds of no load, the solenoid is reactivated to reduce the speed.

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NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion

EAGLE™ 10,000