Manual 37278B GCP-30 Series - Genset Control
© Woodward Page 13/174
Command: close GCB
Terminals 14/15
Enabling this relay will close the GCB. If the GCB closing command is configured to continuous cur-
rent (Parameter 129), in response to a missing discrete input "Reply: GCB is open" the relay is main-
tain
ed in its closed state; this also applies if the voltages of the generator and the busbar are equal. In
the event of a class F3 alarm this relay de-energizes immedately. In the event of a class F2 alarm or
for shutdown the relay does not de-energize immediately, it will de-energize if the power is less than
3.125 % of the rated generator power. If operation of the GCB is configured as a momentary pulse,
the relay de-energizes after the pulse is output. This function must be used in conjunction with an ex-
ternal holding coil for the GCB.
Command: open GCB
Terminals 41/42
Enabling this relay will open the GCB. Following "Reply: GCB is open", the relay output is de-
energized.
[GCP-32] Command: close MCB
Terminals 16/17
Enabling this relay will close the MCB. This output is always a momentary pulse. For the MCB to
remain closed an external holding coil must be used.
[GCP-32] Command: open MCB
Terminals 39/40
By enabling this relay, the MCB will open. Following "Reply: MCB is open", the relay output is de-
energized.
Relay manager
Terminals 74 to 83, 37/38, 47/48
The "Relay Manager" manages the relays listed here (Parameter 286).
Defau
lt values:
•·Relay 1 to 5 = relay number (e. g. relay 1 = alarm class 1, relay 2 = alarm class 2, etc.)
•·Relay 6 = Ignition / preheating
•·Relay 7 = Centralized alarm
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