Woodward easYgen-2000 Series User Manual page 265

Start request during critical mode
4.5.11.2.2 Critical Operation At The Generator
37535B
Configure Application > Automatic Run > Critical Mode
Critical mode ends before mains recovery:
n
– The emergency power operation will be continued and all
shutdown alarms become active again.
– If the mains return, the unit transfers the load from gener‐
ator supply to mains supply after the mains settling delay
expires, if Enable MCB (parameter
been enabled.
Emergency power operation ends before the end of the critical
n
mode:
– The critical mode is maintained and the load is transferred
from generator supply to mains supply after the mains set‐
tling delay expires.
– The engine remains running until the conditions for the crit‐
ical mode are no longer existent.
– If the genset was not running before critical mode has been
enabled, it will be stopped after cool down time (param‐
eter 3316 Ä p.
– The GCB will take on the same state as it has before the
critical mode has been enabled.
The critical mode operation has priority than the remote request
(Start/Stop request in AUTO). Therefore, the remote request
cannot start or stop the engine and has no effect on the breaker
positions. The "Critical mode" message is displayed on the display
screen and all shutdown alarms become warning alarms.
Critical mode ends before the start request is terminated:
n
– The engine continues running. All shutdown alarms will
become active again.
– By resetting the start request the GCB will be opened and
the engine will be stopped.
Start request will be terminated before the critical mode is ter‐
n
minated:
– The critical mode operation is continued.
– The engine keeps running until the conditions for the critical
mode are no longer fulfilled and all shutdown alarms will
become active again.
– If the genset was not running before critical mode has been
enabled, it will be stopped after cool down time (param‐
eter 3316 Ä p.
– The GCB will take on the same state as it has before the
critical mode has been enabled.
The aforementioned fire engine pump or other critical operation is
connected to the generator, i.e. it does not require a closed GCB to
be supplied by the generator during critical operation.
Parameter 4100 Ä p. 268
configured to "No". This ensures an open GCB during critical
mode. A closed CGB is possible in case of an emergency opera‐
tion.
easYgen-2200/2500 | Genset Control
12923 Ä p.
240) has expired.
240) has expired.
(Close GCB in critical mode) should be
Configuration
206) has
265