IGS-NT Combi, SW Version 3.0, ©ComAp – May 2013
IGS-NT-Combi-3.0 Reference Guide.PDF
ï‚· If the input is active and the GCB button is pressed in MAN mode to close
the GCB to dead bus, the GCB will not be closed until the input is
deactivated and the GCB button pressed again.
ï‚· If the input is active and the GCB is to be closed to dead bus
automatically, the GCB will not be closed until the input is deactivated.
Binary input: MCB disable
The input is used to disable issuing the MCB closing command.
ï‚· If the input is active during synchronizing, the controller will keep the
loaded genset synchronized with the mains without issuing the MCB
closing command until the input is deactivated or Sync timeout is elapsed.
ï‚· If the input is active and the MCB button is pressed in MAN mode to close
the MCB to dead bus, the MCB will not be closed until the input is
deactivated and the MCB button pressed again.
ï‚· If the input is active and the MCB is to be closed to dead bus
automatically, the MCB will not be closed until the input is deactivated.
Binary input: GCB fdb neg
This input is used for connection of the normally closed feedback contact from
the generator circuit breaker or contactor. This input is optional and if it is
configured, it must be always in inverse position to the normally open input GCB
feedback. Maximal allowed time the both inputs are in the same position is
500ms, after this time the alarm GCB Fail is issued.
Binary input: MCB fdb neg
This input is used for connection of the normally closed feedback contact from
the mains circuit breaker or contactor. This input is optional and if it is configured,
it must be always in inverse position to the normally open input MCB feedback.
Maximal allowed time the both inputs are in the same position is 500ms, after this
time the alarm MCB Fail is issued.
Binary input: Emerg. manual
This input is designed to allow the gen-set to be controlled externally, not by the
controller.
This feature is especially designed for marine gen-sets, which are supposed to be
started manually as the controller has no power supply before the gen-set is
started. It may be also useful in case of testing the gen-set or in case of a failure,
which does not allow the gen-set to be controlled by the controller, but the gen-set
itself is stays operational. This function is also used in case of redundancy to
disable redundant controller.
The controller behaves following way:
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