Woodward GCP-30 Series - Figure 3-6: Breaker Control Logic Impulse for GCB; Figure 3-7: Breaker Control Logic Continuous

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 83/179
• Breaker logic: 'Impulse' for GCB
'Enable
GCB'
'Command: open ..
.. GCB' (41/42)
'Command:
close GCB' (14/15)
'Reply: ..
.. GCB is open' (4/7)
Time/s
Time/s
Time/s
Time/s
21 8
4 7
9
12
11
10
65
13
2 s
Figure 3-6: Breaker control logic 'Impulse' for GCB
'Impulse' logic (GCB):
• Enable GCB:
1 GCB enabled internally; 2 Systems synchronizing
• Close GCB
: 4 Closing pulse for GCB issued; 5 Inherent breaker closure delay; 6 Reply GCB closed re-
ceived; 7 Closing pulse terminated
• Open GCB:
9 Opening pulse GCB issued; 10 Inherent breaker opening delay; 11 Reply GCB open re-
ceived; 12 Time delay (GCB: 2 s); 13 Opening pulse terminated
• Beaker logic: 'Continuous'
'Enable
GCB'
'Command: open ..
.. GCB' (41/42)
'Command:
close GCB' (14/15)
'Reply: ..
.. GCB is open' (4/7)
Time/s
Time/s
Time/s
Time/s
21 8
4
9
12
11
10
65
13
2 s
7
Figure 3-7: Breaker control logic 'Continuous'
'Continuous' logic (GCB only):
• GCB enabled:
1 GCB enabled internally; 2 Systems synchronizing
• Close GCB:
4 Continuous GCB close pulse issued; 5 Inherent breaker closure delay; 6 Reply GCB closed
received; 7 Closing pulse terminated
• Open GCB:
9 Continuous GCB pulse disabled and GCB open pulse issued; 10 Inherent breaker opening de-
lay; 11 Reply GCB open received; 12 Time delay (GCB: 2 s); 13 Opening pulse terminated