Generac Power Systems H-100 Engine Management, ‹Generator Parameters, ‹Engine Settings

General Information

H-100 Control Panel Technical Manual

ENGINE MANAGEMENT

The engine management module is very similar to that used in the manufacturer's other products. It controls engine cranking, engine starting, engine running and engine stopping. These functions are performed to a set of “rules” that can be customized via parameters from GenLink. In turn, the module needs to know certain things about the engine which it expects to be programmed in from GenLink.

‹GENERATOR PARAMETERS

•Engine Flywheel Teeth — Number of flywheel teeth or pulses per revolution for RPM input. RPM 1 is used for the engine controllers.

•CT Ratio/Generator — Current Transformer ratio for the generator. This value is the result from reducing the CT ratio. E.G. If the CT ratio is 100 amps to 5 amps, the resulting value is 20. Normally, the CT ratio will be x amps to 1 amp on H-100 Control Panels.

•Generator Phase Configuration — Select either single-phase or three-phase configuration depend- ing on how the unit is supplied.

•60 Hertz RPM — The engine RPM needed to supply 60 Hertz power.

•Quiet-Test®RPM — The engine RPM used when running Quiet-Test®.

	Number	PARAMETER	UNITS
	1	Engine Flywheel Teeth	Teeth
	2	CT Ratio - Generator	-
	3	Generator Phase Configuration	1 or 3
	4	60 Hertz RPM	RPM
5		Quiet-Test® RPM	RPM

‹ENGINE SETTINGS

All of the following times are in seconds:

•Preheat Time — The time preheat is applied for before cranking if enabled.

•Start Detection RPM — The Engine must reach this RPM before disengaging the starter.

•Crank Time — The maximum time in seconds that each crank will last

•Alarm Hold-off Time — The time after starting at which the hold-off alarms become enabled.

•Engine Warmup Time — The engine will run for at least this time before issuing the “Accept load” signal.

•Target Frequency — The target generator frequency (Hz).

•Preheat Enable — The following four options are selectable (only for Diesel):

-Preheat disabled.

-Preheat during cranking.

-Preheat before and during cranking.

-Preheat before and during cranking and until load ready.

The Preheat output pin shares its function with the Air/Fuel Solenoid output. You must choose one of the two functions as follows:

-To select Air/Fuel - set the “Diesel” parameter on the governor settings page to “No”. Set Preheat to “Disabled”

-To select Preheat - set the “Diesel Y/N” param- eter on the governor settings page to “Yes”. Set Preheat to one of the enable selections.

•Engine Cooldown Time — The generator will run for at least this time after remote start becomes inactive.

•Pause Between Cranks Time — The time between each successive crank operation.

•Number of Start Attempts — The maximum num- ber of times the engine will attempt to start (crank) before faulting out with overcrank.

•Load Accept Frequency — The generator must reach this frequency before issuing the “Accept load” signal.

•Load Accept Voltage — The generator must reach this voltage before issuing the “Accept load” sig- nal.

Number	PARAMETER	UNITS
1	Preheat Time	(S)econds
2	Start Detection RPM	RPM
3	Crank Time	S
4	Alarm Hold-off Time	S
5	Engine Warmup Time	S
6	Target Frequency	Hz
7	Target Voltage	Vrms
8	Preheat Enable	-
9	Engine Cooldown Time	S
10	Pause Between Cranks Time	S
11	Number of Start Attempts	-
12	Load Accept Frequency	HZ
13	Load Accept Voltage	Vrms

•Target Voltage — The target generator voltage (RMS).

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