Manual 37278B GCP-30 Series - Genset Control
© Woodward Page 11/174
Automatic 2 (Start/Stop the engine)
Terminals 5/7
Selection of the operation mode AUTOMATIC with "real power set point value 2" 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 2" (Parameter 47) is controlled in mains
parallel m
ode. In the case of a 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 operation is enabled (Parameter 109), the engine is started immediately. The
set
point value 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.
If a set point value is specified externally (e. g. via an 0/4 to 20 mA analog input or a bi-directional in-
terface), the external set point value is adjusted with the discrete input (see Table 3-3: Set point value
tab
le).
Multifunction
Terminals 6/7
Discrete input terminal 6 may reveal different functions. Please note that, when used as a Critical
(Sprinkler) mode input, the discrete input reveals negative functional logic. The selection of the logic
is made using Parameter 239.
Repl
y: GCB is open
Terminals 4/7
With this input (logical "1") the control is signaled that the GCB is open (the "GCB ON" LED is off).
[GCP-32] Reply: MCB is open
Terminals 54/7
With this input (logical "1") the control is signaled that the MCB is open (the LED "MCB ON" is off).
[GCP-31] Isolated operating / reply external breaker
Terminals 54/7
With this input (logical "1") the control is signaled that the genset is operated in isolated operation
(the LED "Mains parallel" is off). This discrete input is used to decide whether, after closing the
GCB, frequency control (terminal 54 = logical "1") or real power control (terminal 54 = logical "0") is
to be carried out.
Enable MCB
Terminals 53/7
Set .................. A mains parallel operation is enabled and the MCB (GCP-31: this function is per-
formed externally from the controller) is operated.
Reset .............. The MCB is not operated. Depending on the reply of the MCB, an isolated operation
or a main parallel operation is performed.
Discrete inputs
Terminals 34 to 36/33 and 61 to 73/60
Freely programmable alarm inputs with message text, alarm class, time delay, delayed engine moni-
toring and NO/NC function.
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