Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 139/190
Start/Stop Sequence 'Gas Engine'
t/s
t
ZV
t
St SPZ
t t
ZV GV
t
t
ZN
1500 1/min
ZD (1)
(1) (2)
MV
t
t
N
Ignition
Starter
Speed governor
Gas valve
Start request
Engine monitoring
activated
Delayed engine
monitoring 00s
Time jump
Speed curve with Pickup
Speed curve without Pickup
Start Stop
Approach idle
gas position
Switching-on of
the ignition
Disengaging of the starter
Ignition and gas ON
Start attempt
unsuccessful
Start attempt
successful
Ignition speed reached
min. speed starter
(Pickup ON)
[1/min] (2)
min. speed starter is not reached
Start frequency
f-contr. + time
without Pickup active: < 15 Hz
[1/min]
Figure 9-7: Start-Stop sequence: Gas engine
The signs and indices mean:
t
Sta
........... Approach idle gas position [s]
t
ZV
........... Firing delay [s]
t
GV
........... Gas delay [s]
t
SPZ
.......... Time between two start attempts [s]
t
MV
.......... Delayed engine monitoring [s]
t
ZN
........... Ignition coasting [s]; pre-specified: 5 s
t
N
............. Engine cool down time [s]
(1)........... Disengagement of the starter; Ignition and gas also ON
(2)........... Switching ON the ignition

Woodward GCP-20 Series Specifications

General

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