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Manual 37278B GCP-30 Series - Genset Control

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

Woodward GCP-30 Series Configuration

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