Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 135/179
Parameter 268
time f lower
bef.start 000s
with three- step controllers only
only accessible via LeoPC1
Diesel engine; frequency lower prior to start (time) 0 to 999 s
The duration that the "lower engine speed" signal (see Parameter 267) is output.
Parameter 269
Fuel relay logic
----------------
Diesel engine; fuel solenoid logic open to stop / close to stop
open to stop . The fuel solenoid is energized prior to each start sequence. In order
to stop the engine, the fuel solenoid is de-energized.
close to stop In order to stop the engine, the fuel shutdown solenoid is energized.
The fuel shutdown solenoid remains energized for an additional
30 seconds once the engine speed drops below firing speed (Para-
m
eter 272) and the generator voltage is less than 20 V.
Cool Down
Parameter 270
Cool down time
000s
Engine; cool down time 0 to 999 s
If the engine performs a normal shutdown (i.e. STOP mode initiated) or an F2 class
alarm has been initiated, an engine cool down period with frequency control is per-
formed for the time configured here after the GCB opens. The engine will shut-
down following the conclusion of the engine cool down period. If the engine cool
down has terminated (cool down time has been expired) and engine speed (Para-
m
eter 272) is still detected after 30 seconds, an engine failure to stop message is
displayed.
Note
The GCP will not perform a cool down period unless the GCB reply (terminal 4)
has been de-energized for at least 5 seconds, indicating that the breaker has been
closed.
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