Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 37/190
Operational Messages of the Unit
Messages of the protective
device
The following messages are output by the monitor functions:
• Undervoltage generator or mains (only after mains decoupling)
"G-.underv." / "M-undervolt"
• Overvoltage generator or mains (only after mains decoupling)
"G-Overvolt." / "M-overvolt."
• Undervoltage generator or mains (only after mains decoupling)
"low freque." / "M-underfrq."
• Overfrequency generator or mains (only after mains decoupling)
"over freq." / "M-overfreq."
• phase shift "phase shift"
• Overspeed (pickup tripping) "over speed"
• Generator overload "G-overload"
• Reverse-/reduced load "power fail"
• Generator overcurrent 1 "Gen.curr. 1"
• Generator overcurrent 2 "Gen.curr. 2"
• Battery undervoltage "Bat.undervo"
Messages of the discrete
inputs
The text assigned in the relevant screen is output as an alarm message. At the same time,
alarm output for the alarm class which has been set occurs.
"Pickup/fre."
This alarm message is output on the display if the deviation (≈10 Hz) of the pickup speed
from the generator frequency is too large.
"Error Y1Y5"
Interface Y1 to Y5 malfunction. External control signals cannot be received.
"Error X1X5"
Interface X1 to X5 malfunction. External control signals cannot be received.
"GCB syn.fai"
If the synchronization time or the connect time for the generator power circuit breaker has
been exceeded, this message is shown in the display. At the same time, an alarm class F1
alarm is output.
"MCB syn.fai"
If the synchronization time or the connect time for the mains power circuit breaker has been
exceeded, this message is shown in the display. At the same time, an alarm class F1 alarm is
output.
"GCB failure"
If the GCB cannot be activated after 5 attempts, this message is output on the display. If it is
present 2 seconds following the "Command: GCB open" pulse, this message is also indicated.
At the same time, an alarm class F1 alarm is output. An output of this malfunction via the re-
lay manager is possible.
"MCB failure"
If the MCB cannot be activated after 5 attempts, this message is output on the display. If it is
still present 2 seconds following the "Command: MCB open" pulse, this message is also indi-
cated. At the same time, an alarm class F1 alarm is output. An output of this malfunction via
the relay manager is possible.
"power zero"
The (power circuit) breaker logic "interchange" has been selected and the MCB is to be
opened. If the incoming power zero cannot be adjusted within the time set in the "Add on/off
max. time" screen, this message is displayed.
"Start fail"
This message is output following three unsuccessful starting attempts. No further attempt at
starting is made. In sprinkler operation, starting is attempted six times before this message is
displayed.

Woodward GCP-20 Series Specifications

General

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