Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 11/179
Automatic 2 (Start/Stop the engine)
Terminals 5/7
Enabling this input while the control is in the AUTOMATIC operation mode will result in the GCP-
30 controlling the real power in accordance with how " P controller: set point 2" is configured and
may be used to initiate the engine start/stop sequence.
Energize ........ If the AUTOMATIC operation mode has been enabled the real power is controlled in
the manner configured in "P controller: set point 2" (Parameter 36) while in parallel
with the m
ains. If "P controller: set point 2" is configured for baseload (C), import (I),
or export (E) the engine will start when terminal 5 is energized and a mains parallel
operation will be performed following the synchronization of the GCB. If the genera-
tor is not connected to the mains, the generator will start, perform a dead bus closure,
and assume the load. Additional generators will synchronize and share the load propor-
tionally.
If the controller is in the AUTOMATIC operation mode and "P controller: set point 2"
(Parameter 36) is configured for 000kW and "Loadd.start/stop at ter.5" (Parameter 96)
is co
nfigured OFF, the engine will start and the GCB will synchronize. The load may
be increased or decreased by raising or lowering the load set point manually. The load
for the control is changed by pressing the SETPOINT button until the "P set 2" screen
is displayed and increasing or decreasing the load set point to the desired value by
pressing either the Setpoint raise or lower buttons.
De-energize ... The generator will unload, the GCB will open, and the engine will perform a cool
down and stop unless an emergency power or critical/sprinkler mode operation is ac-
tive. The generator will shutdown after the emergency power or critical/sprinkler mode
operation has terminated.
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 the discrete input enabled by energizing terminal 5 (refer to
Table 3-3: Set point value table).
Multifunctio
n
Terminals 6/7
Terminal 6 may be configured to perform one of several functions. Parameter 211 lists the available
functions.
Note: When the Critical (Sprinkler) mode is configured, the input operates on negative logic. The
Critical (Sprinkler) mode is disabled when terminal 6 is energized and enabled when terminal 6 is de-
energized.
Reply: GCB is open
Terminals 4/7
When this input is energized, the controller recognizes that the GCB is open (the "GCB ON" LED is
not illuminated).
[GCP-32] Reply: MCB is open
Terminals 54/7
When this input is energized, the controller recognizes that the MCB is open (the "MCB ON" LED is
not illuminated).
[GCP-31] Isolated operating / reply external breaker
Terminals 54/7
When this input is energized, the controller recognizes that the genset is operating isolated from the
mains (the "Mains parallel" LED is not illuminated). This discrete input determines if the controller
performs frequency control (terminal 54 = energized) or real power control (terminal 54 = de-
energized) after the GCB has been closed.
Enable MCB
Terminals 53/7
Energized ...... The MCB has been enabled and a mains parallel operation will be performed. The
GCP-31 uses the LS-4 or an external controller to operate the MCB.
De-energized . The MCB is disabled and cannot be closed. The controller will operate as an isolated
or mains parallel operation dependent upon the state of the input "Reply MCB is
open".
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