Manual 37365A GCP-30 Series Packages - Genset Control
Page 10/179 © Woodward
Signals
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Discrete Inputs
NOTE
Emergency power and critical operation modes will be carried out while the GCP-30 is in TEST or AU-
TOMATIC mode regardless if the discrete inputs for "Automatic 1" and/or "Automatic 2" are enabled.
This is dependent upon if Parameter 137 (Emergency power) has been configured as ON and if Para-
meter 211 (T
erminal 6) is configured for a critical/sprinkler mode.
NOTE
If terminals 3 and 5 are enabled simultaneously, terminal 3 has precedence over terminal 5 and the ge-
nerator will operate in accordance with how "Automatic 1" is configured.
Automatic 1 (Start/Stop the engine)
Terminals 3/7
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 1" 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 1" (Parameter 35) while in parallel
with the m
ains. If "P controller: set point 1" is configured for baseload (C), import (I),
or export (E) the engine will start when terminal 3 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 1"
(Parameter 35) is configured for 000kW and "Loadd.start/stop at ter.3" (Parameter 95)
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 1" 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.
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