Manual 37240C GCP-30 Series - Genset Control
Usable Standard Functions of the GCP-30
RelayManager Functions
The following information, which is provided by the GCP-30 via the relay manager, may be important for the
master control in association with the start-up synchronization :
• Parameter No. 4 Firing speed reached (engine runs)
• Parameter No. 88 Generator voltage and frequency are NOT available
• Parameter No. 89 Busbar voltage and frequency are NOT available
• Parameter No. 91 Pickup has nominal speed (rated speed +/- 6%)
• Parameter No. 96 Delayed engine monitoring time exceeded
• Parameter No.133 Idle mode active
NOTE
All above mentioned information is also available on the guidance bus (CAN bus terminals X1 to X5).
Parameter Enable 'idle mode' via terminal 70
Parameter 1
Idle Mode
by term.70 ON
Enable idle mode via terminal 70 ON/OFF
OFF..............This terminal is used as an alarm input.
ON................This terminal is used as control input. The relay programmed with
the relay manager function 133 reacts together with the logical status
of terminal 70 according to the configured NO/NC logic and invert-
ing the relay output. This relay must be wired to the "idle input" of
the speed governor normally.
• High signal Energizing the terminal 70 discrete input enables the
idle mode. The message "Idle Mode" is displayed in
all operational modes (except STOP mode) when a
start request is initiated and during the postrun time
so long as there are no other message with a higher
display priority (i.e. preglow). The generator under-
voltage and underfrequency protections are disabled
while in the idle mode and the warning limit value
for the oil pressure VDO input is suppressed. These
protections are enabled after terminal 70 is de-
energized and the monitored frequency is measured
within 1 Hz of the rated generator frequency or after
60 seconds passes, which ever occurs first.
• Low signal The idle mode is disabled and the protections become
active again (see above description).
Page 36/38 © Woodward
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