Lincoln Electric SVM204-A Theory of Operation, Engine STARTING, Protection and Battery Charging

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E-2 THEORY OF OPERATION E-2

FIGURE E.2 - ENGINE STARTING, PROTECTION AND BATTERY CHARGING

							CURRENT	120 VAC RECEPTACLES		240 VAC
							SENSOR
									RECEPTACLE
		OIL LEVEL						CB1	CB3
OIL		INDICATOR
LEVEL								CB2	CB4
MODULE
(KOHLER)							REACTOR
		OIL LEVEL			AUXIIARY WINDINGS
		SWITCH		RINGS		STATOR
				SLIP						+
				_ +		WELD		OUTPUT	CHOKE
										OUTPUT
		IGNITION	ENGINE		ROTOR	WINDINGS		RECTIFIER
										STUDS
								(2 PHASE)
					BRUSHES
		STARTER /	ALTERNATOR	IDLE	EXCITER
		SOLENOID		SOLENOID	WINDING
		10 AMP						BOOST
								WINDING
		FUSE
		OFFAUTO
_	+	HIGH
		START
BATTERY				ENGINE
				SHUTDOWN
				RELAY				OUTPUT
						AUTOMATIC	OUTPUT	CONTROL
						IDLER	CONTROL CIRCUIT
						CIRCUIT
			HOUR
			METER		FIELD / CONTROL PC BOARD

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ENGINE STARTING, PROTECTION AND BATTERY CHARGING

ENGINE STARTING

A 12 Volt battery supplies power to the rotary run/stop/idle switch through a fuse that is located inside the control box. There is also a lead running from the fuse to the PC board. This is for battery charging only.

When the switch is placed in the “Low Idle” or “High Idle” position, a relay on the PC board is activated. This relay activates the engine ignition system by opening a ground lead from the engine magneto.

When the switch is held in the “Start” position, the starter motor solenoid is activated, cranking the engine. After the engine starts, the switch is released and returns to the “high idle” position.

If the battery is too low to properly power the starter motor, the built-in recoil starter can be used to crank the engine. (As long as the battery can produce 6 volts or more, the engine ignition system will remain enabled.)

NOTE: This machine will only start if there is at least 6 volts available to activate the engine ignition system. If the battery is removed or completely dead, the engine will not start.

ENGINE PROTECTION

The Kohler engine has a built-in oil level sensor that is connected to an oil level module. If the oil level is low, the ignition magneto is disabled. This will prevent the engine from starting, or shut it down. Low oil level will also cause a warning light on the Outback®’s control panel to flicker for a few seconds when cranking the engine.

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

OUTBACK® 185