ComAp IG-NT GC Reference Manual page 55

Transition opening -> closing (closing command is issued during opening pulse)
BO: CB close/open
BO: CB ON coil
BO: CB UV coil
BO: CB OFF coil
BI: CB fdb
BI: CB fdb neg
BO: CB status
Other CB fail reasons:

When the BO CB close/open is in steady state and CB feedback is changed, the CB fail is detected
immediately (no delay).
BO GCB close/open
BI GCB feedback
Alarm: GCB fail

When the BO CB close/open opens, there is 5 resp. 2 sec delay for the breaker to respond before a CB
fail is detected. In such case, if CB OFF coil is used for opening the CB and CB fail occurs during
opening the CB, the signal CB OFF coil is automatically extended until the breaker opening is detected
(evaluated as CB status).

2 sec when the CB is used for synchronizing

5 sec in other cases
Inteli NT GeCon-MARINE SPI, SW Version 3.2, ©ComAp – July 2015
IGS-NT-GeCon-MARINE-SPI-3.2.PDF
2s
2s
opened
closed
active
Alarm detection:
immediatelly
BO GCB close/open
BI GCB feedback
Alarm: GCB fail
In this moment, the reason for closing the
CB is activated again (e.g. Remote
Start/Stop is activated)
Here starts the standard closing
sequence – see CB close command.
OFF a UV pulse is always activated for
the full time. manual control (= CB
button) is deactivated during opening
pulse.
BO GCB close/open
BI GCB feedback
Alarm: GCB fail
opened
opened
Time delay
active
5 sec
closed
opened
active
Alarm detection:
immediatelly
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