Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 49/190
Closed Transition Switch Logic [GCP-20/22]
Closed transition synchronization is activated via the "CLOSED TRANS." screen input.
In the event of a motor
request, a switch is
made from mains to
generator supply. In
order to achieve this
• the GCB is synchronized and closed and
• the MCB is opened
After the motor request
has been reset, a switch
is made from generator
to mains supply. In or-
der to achieve this
• the MCB is synchronized and closed
• the GCB is opened
NOTE
The power circuit breakers are opened regardless of the power.
Open Transition Switch Logic [GCP-20/22]
Open transition logic is activated via the "OPEN TRANS." screen input.
In the event of a motor
request, a switch is
made from mains to
generator supply. In
order to achieve this
• the MCB is opened
• the GCB is closed
After the motor request
has been reset, a switch
is made from generator
to mains supply. In or-
der to achieve this
• the GCB is opened
• the MCB is closed
External Switch Logic
The external switch logic is activated via the "EXTERNAL" screen input. The entire switch activation must be
effected by a master controller (for instance by a PLC). Closing and opening pulses sent to the MCB and the
GCB are only output by this controller, if the operating mode is set to "MANUAL". In the event of an alarm the
circuit breakers are in any case opened by this controller.

Woodward GCP-20 Series Specifications

General

Brand	Woodward
Model	GCP-20 Series
Category	Control Unit
Language	English