Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 143/190
Stopping Sequence
When the start request is terminated, a power reduction is performed (if the real power controller is enabled,
Parameter 61). Once the GCB has opened, an engine cool down is performed (Parameter 273). When the engine
cool down period expires, the fuel relay is de-energized and the engine is stopped. If the engine speed falls below
the firing speed (
Parameter 275), the engine starting sequence is disabled for 10 seconds. If the engine cannot be
stopped, an alarm message is issued after 30 s, and a class F3 alarm is initiated.
Parameter
Parameter 267
Preglow time
00s
Diesel engine; pre-glow time 0 to 99 s
Prior to each starting sequence, the engine glow plugs are enabled for this time pe-
riod.
Parameter 268
Starter time
00s
Diesel engine; crank time 2 to 99 s
The maximum amount of time the starter will crank the engine during a start se-
quence.
Parameter 269
Start pause time
00s
Diesel engine; time between two start attempts 1 to 99 s
The delay time between the individual start attempts.
Parameter 270
freq. low before
start OFF
with three-step controllers only
Diesel engine; approach low-idle position ON/OFF
If this function is enabled and the control is equipped with a three-step frequency
controller, the command "lower engine speed" is issued for the time configured in
Parameter 271 before the starter is engaged. The low-idle position must either be
equipped with a limiting switch, or the engine potentiometer must be equipped with
a slipping clutch to protect the devices. A message is displayed.
CAUTION
The engine starting is delay by means of the low-idle position in the event of emer-
gency power operation.
Parameter 271
action time for
freq. low 000s
with three- step controllers only
Diesel engine; approach low-idle position (time) 0 to 999 s
The duration that the "lower engine speed" signal (see Parameter 270) is output.
Parameter 272
Start-Stop-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 shutdown the engine, the fuel solenoid is de-energized.
close to stop. In order to shutdown the engine, the fuel solenoid is energized. The
fuel solenoid remains energized for an additional 10 seconds once the
engine speed drops below firing speed (
Parameter 275) and the gen-
erator voltage is less than 20 V.

Woodward GCP-20 Series Specifications

General

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