Multiquip DCA-400SPK Voltage Regulator Control Allows, Mpec Microprocessor, Engine Control Module

		DCA-400SPK — CONTROL PANEL
The definitions below describe the controls and functions of		If the engine does not engage (start) by the third attempt,
the DCA-400SPK " Control Panel " (Figure 8).		the engine will be shutdown by the MPEC's " Over Crank
1.	Pilot Lamp – Indicates that the generator is working	Protection" mode. If the engine engages at a speed (RPM's)
	properly.	that is not safe, the MPEC will shutdown the engine by
		initializing the "Over Speed Protection" mode.
2.	Panel Light – Normally used in dark areas or at night
		Also the MPEC will shutdown the generator in the event of
	time. When activated, panel lights will illuminate. When
		low oil pressure, high coolant temperature, low coolant level,
	the generator is not in use be sure to turn the panel
		and loss of magnetic pickup. These conditions can be
	light switch to the OFF position.
		observed by monitoring the LED status indicators on the
3.	Frequency Meter – Indicates the output frequency in
		front of the MPEC module.
	hertz (Hz). Normally 60 Hz ±1 Hz .
		A.	Off/Manual/Auto Switch	– This switch controls the
4.	AC Ammeter – Indicates the amount of current the
			running of the generator. If this switch is left in the "OFF"
	load is drawing from the generator.		position, the generator will not run. When this switch is
5.	AC Voltmeter – Indicates the single phase output		set to the manual position, the generator will start
	voltage present at the UVW terminals.		immediately.
6.	Ammeter Change-Over Switch – This switch allows		If the generator is to be connected to a building's AC
	the AC ammeter to indicate the current flowing to the		power source via a transfer switch (isolation), place
	load connected to any phase of the output terminals, or		the switch in the auto position. In this position the
	to be switched off.		generator will monitor the	AC line output from the
			building's power source.
7.	Voltmeter Change-Over Switch – This switch allows
		B.	Low Oil Pressure – Indicates the engine pressure
	the AC voltmeter to indicate phase to phase voltage

between any two phases of the output terminals or to	has fallen below 15 psi. The oil pressure is detected
	using variable resistive values from the oil pressure
be switched off.
	sending unit. This is considered a major fault.

8.Panel Light Switch – When activated will turn on control

	panel light.	C.	High Coolant Temperature	– Indicates the engine
			temperature has exceeded 215°F. The engine
9.	Voltage Regulator Control – Allows	manual
			temperature is detected using variable resistive values
	adjustment of the generator’s output voltage.
			from the temperature sending unit. This is considered
10.	MPEC – Microprocessor		a major fault.
	Engine Control Module –	D.	Overcrank Shutdown – Indicates the unit has
	(MPEC) has a vertical row		attempted to start a pre- programmed number of times,
	of status LED's (Figure 9),		and has failed to start. The number of cycles and
	that when lit, indicate that an		duration are programmable.Typical programmable start
	engine malfunction (fault),		settings is 3 cycles with a 10 second duration .This is
	has been detected. When a		considered a major fault.
	fault has been detected the	E.	Overspeed Shutdown –	Indicates the engine is
	MPEC will evaluate the fault
			running at an unsafe speed.This is considered a major
	and if the fault is major will
			fault.
	shutdown the generator.
	Figure 9. MPEC ModuleF.		Engine Running – Indicates that engine is running at
During cranking cycle , The MPEC will attempt to crank the			a safe operating speed.

engine for 10 seconds before disengaging.

11. Main Circuit Breaker – This three-pole, 800 amp main breaker is provided to protect the UVW voltage output terminals from overload.

DCA-400SPK — PARTS AND OPERATION MANUAL — REV. #0 (06/19/01) — PAGE 31