User manual

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9 , 10
Speed. Options: Generator Output (L-Version) or Mag Pickup (H Version)
Generator Output (L-Version)
Speed Signal Input for Crank Disconnect, Engine Run, and Overspeed sensing.
300VAC max input voltage. Speed sensing input terminals (#9, #10) do not have
polarity sensitivity therefore the AC generator output leads can be connected in any
polarity configuration. Do not exceed 300VAC on speed sensing input terminals.
The following values are minimal recommended voltages:
20Hz - 0.075V (75mV)
60HZ - 0.6V (600mV)
Mag Pickup (H-Version)
The magnetic pickup only works for frequencies up to 3000Hz (this is max of 100 teeth
at 60Hz)
If using magnetic pickup as the speed sensing source the maximum frequency allowed
into the controller is 3000Hz. Frequencies higher than this will cause the hourmeter
and other timings to become inaccurate. For example at 3500Hz the hourmeter error
will be 5%.
Frequency = (Number of teeth * engine speed in RPM) / Generator Output Hz
E.g. Number of teeth = 100, engine speed = 1800RPM, Generator Output Hz at 60Hz
the frequency would be:
(100 * 1800) / 60 = 3000 Hz
The following values are minimal recommended voltages:
1000Hz – 0.6V (600mV)
3000Hz – 0.85V (850mV)
General
The GSC300 does not have loss of speed detection. If there is no speed signal during
cranking/run but the genset starts up and runs the starter will remain engaged for the
remainder of the crank cycle.
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Outputs
DO NOT exceed the maximum rated current and voltage on each of the controller
outputs. DO NOT exceed 300mA individually, or 350mA combined.
Do not connect power to the outputs. If there is power on these outputs when
the GSC300 is unpowered the GSC300 will be damaged. If this is necessary install
a diode between the output and power source to prevent back feed.
To verify the operation of engine controller outputs, measure voltage (i.e. meter in
volts) when outputs should be ON. Note: The outputs have over-current protection
which turns off the output in an over-current condition. To reset the over-current
protection power down the controller for 30s and power back up.
11
Overcrank Output closes to +12/24VDC on Overcrank Failure.
12
Overspeed Output closes to +12/24VDC on Overspeed Failure.
13
High Temp Output closes to +12/24VDC upon High Temp Failure.