Manual 37128A GCP-20 Series - Genset Control
Page 102/190 © Woodward
Parameter 107
Open GCB with F2
max.time 000s
Max. perm. time with F2 alarms for starting a further engine 0 to 999 s
Prerequisite: Load sharing (Parameter 77) and automatic start/stop (Parameter 82 or
Parameter 83) are configured to "ON". The generator is in isolated operation and at
least one additional generator is connected to a busbar.
If a class F2 alarm occurs the engine shutdown may be delayed by the time config-
ured here. This permits another engine to attempt to start in order to assume the load.
After the configured time expires the engine with the F2 alarm condition will shut-
down regardless if another engine was able to start and assume the load.
GCB Impulse/Constant Pulse
Closing and opening of the GCB and the MCB are described in the following figures (Figure 9-1 and Fehler!
Verweisquelle konnte nicht gefunden werden.). Changing of the breaker control logic is configured using
Parameter 108 and has the described effect on the signal sequence (the operation of the MCB cannot be carried
out by means of the continuous pulse). If the "Automatic breaker deblocking" (
Parameter 116) is configured to
"ON", an open pulse is issued prior to each close pulse. The discrete input "Enable MCB" (terminal 54) en-
ables/disables closing the MCB. A closed MCB is not opened.
• Breaker logic: 'Impulse'
8
Connection time
21 3
Release
MCB
4
4
7
5
4
6
7
'Command:
GCB open' (41/42)
MCB open' (39/40)
'Reply:
GCB is open' (4/7)
MCB is open' (54/7)
'Command: MCB
close' (16/17)
'Command:
GCB close' (14/15)
'Command:
GCB close' (14/15)
9
Time/s
Time/s
Time/s
11
10
9
12
Time/s
2/0.8 s
13
Time/s
Time/s
Figure 9-1: Breaker control logic 'Impulse'
'Impulse' logic (GCB and MCB): 1 Enable MCB; 2 Synchronization; 3 Connect time reached:
• close GCB/MCB
: 4 Closing pulse for GCB/MCB enabled; 5 Inherent delay; 6 Reply GCB/MCB; 7 Closing
pulse disabled;
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