Manual 37278B GCP-30 Series - Genset Control
© Woodward Page 85/174
NOTE
If the mains monitoring (frequency and voltage) is disabled, no mains decoupling is performed.
Parameter 160
Mains decoupling
via ------
at GCP-32 only
Decoupling from the mains via ... GCB; GCB->MCB; MCB; MCB->GCB
GCB ............. If a mains failure (Parameter 206 to Parameter 219) occurs the GCB
will be opened. (The mains failure is detected by means of the mains
voltage [terminals 50/51/52]).
GCB->MCB If a mains failure (Parameter 206 to Parameter 219) occurs the GCB
will b
e opened. (The mains failure is detected by means of the mains
voltage [terminals 50/51/52]). An alarm message will be issued with
the end of the delay time (Parameter 161) if terminal 4 does not
det
ect a reply that the GCB has opened. The relay assigned relay
manager function 76 will be energized as well. The "Command: open
GCB" relay (terminal 41/42) will de-energize and the "Command:
open MCB" relay (terminals 39/40) is energized.
Issuing of class F1 alarm
MCB ............ If a mains failure (Parameter 206 to Parameter 219) occurs the MCB
will be opened. (The mains failure is detected by means of the mains
voltage [terminals 50/51/52]).
MCB->GCB If a mains failure (Parameter 206 to Parameter 219) occurs the MCB
will b
e opened. (The mains failure is detected by means of the mains
voltage [terminals 50/51/52]). An alarm message will be issued with
the end of the delay time (Parameter 161) if terminal 54 does not
det
ect a reply that the MCB has opened. The relay assigned relay
manager function 77 will be energized as well. The "Command: open
MCB" relay (terminals 39/40) will de-energize and the "Command:
open GCB" relay (terminals 41/42) is energized.
Issuing of class F1 alarm
Parameter 161
Mains decoupling
-> after 0.00s
Mains decoupling after 0.10 to 5.00 s
The maximum amount of time that the mains decoupling should be completed in.
WARNING
During maintenance of the busbar be aware that an open MCB will be closed by the GCP when the
mains settling time (Parameter 220; starts when voltage is detected on the mains) expires if Para-
meter 162 is configured as "YES". Configuring Parameter 162 as "NO" or take other measures to pre-
v
ent the busbar from being energized.
Parameter 162
Switch MCB in
STOP mode NO
Operate MCB in operation mode STOP YES/NO
YES .............. The MCB will be operated by the GCP in STOP mode (the busbar
will be closed onto the mains if the controller is changed into this
STOP mode). It is necessary that "Enable MCB" (terminal 54) be
energized as well.
NO ................ The MCB will not be operated by the GCP in STOP mod (the busbar
will not be connected or remains unconnected if the control unit is
changed into STOP mode).