Creation:03.09 — 2009 1-1-11
Description
D. GENERATOR CONTROL MODULE
The generator control module is mounted inside the door of the GPU’s electrical box. It’s
display is read without opening up the electrical box. The module the waterproof electrical
box. The regulator panel provides mounting facilities for the generator control components.
The Generator Control Module is designed to provide 1% of voltage regulation with 100
millisecond recovery time for all loads up to 100% of the rated load on all 3 three-phase, four-
wire, 115/200 volt, 400 Hz, brushless generators. It has a voltage regulator circuit which
controls the generator output voltage by regulating the amount of current to the exciter field.
The maximum continuous output rating of the regulator is 65 VDC, 5 amperes, with a one-
minute field forcing capacity of 90 VDC, 7 amperes.
The voltage regulator senses the generator voltage, compares a rectified sample of that
voltage with a reference voltage, and supplies the field current required to maintain the
predetermined ratio between the generator voltage and the reference voltage. The voltage at
which the generator is regulated may be adjusted with the voltage regulator. Refer to the
Manufacturer's Literature in Chapter 5 for more detailed information on the generator control
module.
The Generator Control Module
is the brain of the GPU-4060. It is a fully-automatic Voltage
Regulator that not only provides voltage regulation, but also generator fault protection as well
as generator operating parameter display. The voltage regulator monitors the 400 Hz output
when 400 Hz is in use and automatically switches over to monitor 28.5 VDC output when
optional 28.5 VDC transformer rectifier is in use. The voltage regulator provides line drop
compensation on 400 Hz as well as line drop compensation and current limiting on 28.5 VDC
transformer rectifier. The voltage regulator displays the generator output operating parameters
such as voltage, current, and frequency, digitally on a backlit LCD. The voltage regulator is
programmed to provide generator output fault protection in the following settings:
- Over frequency: 420 Hz in 5 seconds
- Under frequency: 380 Hz in 7 seconds
- Over voltage: 130 volts in 2 seconds
- Under voltage: 100 volts in 7 seconds
- Overload: 125% of rated load for 5 minutes
The voltage regulator displays and latches the fault if any of the above should occur.
Generator Control Module
(GCM)
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