Manual 37278B GCP-30 Series - Genset Control
Page 10/174 © Woodward
Systems With Asynchronous/Induction Generators (Special Hardware!!)
In the case of systems with asynchronous/induction generators, the following must be noted:
• Systems with asynchronous/induction generators are 1-power-circuit-breaker systems [GCP-31].
• Connect the remnant voltage to terminals 23/24. Terminals 23/24 are voltage sensitive and can detect voltag-
es from 0.5-480 volts. These terminals are utilized to determine the frequency (rotary speed) of the remnant
voltage with small amplitudes. If the GCB is not closed, only the remanence voltage, which is less than
10 volts, is measured instead of the generator voltage. The generator voltage and frequency is monitored only
once the GCB is closed. If the control is in mains parallel operation, the inputs from 23/24 are no longer taken
into account.
Signals
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Discrete Inputs
NOTE
All emergency power (Parameter 164 "Emergency power" has to be configured to ON) or Critical
(Sprinkler) mode operations (terminal 6 must be configured accordingly; Parameter 239) will be carried
out in the TEST and A
UTOMATIC operation modes regardless of the discrete inputs "Automatic 1" and
"Automatic 2". If terminals 3 and 5 are enabled simultaneously, priority is given to terminal 3.
Automatic 1 (Start/Stop the engine)
Terminals 3/7
Selection of the operation mode AUTOMATIC with "real power set point value 1" as well as start-
ing/stopping of the engine.
Set ................. If the control is in AUTOMATIC mode (selected using the mode selection switch on
the front panel) the "real power set point value 1" (Parameter 46) is controlled in mains
paral
lel mode. In the case of baseload (C), the engine is started immediately and mains
parallel operation is performed following the synchronization of the generator power
circuit breaker GCB. In the case of incoming/import (I) or outgoing/export power (E),
starting is performed by automatic start/stop operation. If no automatic start/stop op-
eration is enabled (Parameter 108), the engine is started immediately. The set point
val
ue can be modified via both the configuration mode and via the "up/down" push
buttons in AUTOMATIC mode.
Reset ............. If the engine does not run either in Critical (Sprinkler) mode or emergency power
mode, the GCB is opened, a cool down is performed and the engine is stopped.
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