Woodward GCP-30 Series - GCB;MCB Pulse;Continuous Pulse; Figure 3-5: Breaker Control Logic Impulse for MCB

Manual 37365A GCP-30 Series Packages - Genset Control
Page 82/179 © Woodward
GCB/MCB Pulse/Continuous Pulse
The closing and opening processes of the GCB and the MCB are described in Figure 3-5 and Figure 3-7. Chang-
ing of the generator breaker control logic to either a momentary pulse or a continuous signal is configured using
Parameter 114 (the MCB can only be configured for a m
omentary pulse). If "Automatic breaker deblocking"
(Parameter 122) is configured to "ON", an open pulse is issued prior issuing a close pulse. Energizing the dis-
crete input "Enable MCB" (term
inal 54) enables/disables closing the MCB. De-energizing terminal 54 will not
result in a closed MCB being opened.
• Breaker logic: 'Impulse' for MCB
'Enable
MCB'
'Command: open ..
.. MCB' (39/40)
'Command:
close MCB' (16/17)
'Reply: ..
.. MCB is open' (54/7)
Time/s
Time/s
Time/s
Time/s
21 8
4 7
9
12
11
10
65
13
0.8 s
Figure 3-5: Breaker control logic 'Impulse' for MCB
'Impulse' logic (MCB):
• Enable MCB:
1 Terminal 53 (Enable MCB) energized; 2 Systems synchronizing; 8 Terminal 53 (Enable
MCB) de-energized
• Close MCB
: 4 Closing pulse for MCB issued; 5 Inherent breaker closure delay; 6 Reply MCB closed re-
ceived; 7 Closing pulse terminated
• Open MCB:
9 Opening pulse MCB issued; 10 Inherent breaker opening delay; 11 Reply MCB open re-
ceived; 12 Time delay (MCB: 0.8 s); 13 Opening pulse terminated