ComAp IG-NT GC Reference Manual page 66

#Neutral cont.
Setpoint changes behavior of binary output Neutral CB C/O which is used for Neutral contactor control.
EACH: Four pole GCB's are supposed on the engine.
a) When GCB is opened (after start, before stop):
Binary output Neutral CB C/O (Neutral contactor) closes when Generator voltage is higher than 75%
of Nominal voltage.
Binary output Neutral CB C/O (Neutral contactor) opens when Generator voltage is lower than 50%
of Nominal voltage.
b) Binary output Neutral CB C/O (Neutral contactor) is opened when gen-set is running in parallel to the
mains (MCB is closed) .
COMMON: Three pole GCB's are supposed for the gen-set.
a) When MCB is opened Neutral contactor closes when Generator voltage (at least one phase) is
higher than 75% of Nominal voltage.
b) When MCB is opened Neutral contactor opens when all phases of Genset voltage are lower than
50% of Nominal voltage.
c) When MCB is closed Neutral contactor opens.
Hint:
Configure Binary output Neutral CB C/O and Binary input Neutral CB fdb Prior to Neutral contactor function
is used.
Neutral contactor fail is detected when no feedback comes within 400ms or when MCB and Neutral
contactor are closed for more than 400 ms.
WatchedContr
Range 1.....16 [controller CAN address]
This setpoint defines the address of the controller which is the master one in the redundancy controller
system. Master controller has this setpoint adjusted to 0. The redundant controller has this setpoint adjusted
to address of it's master. The slave evaluates the activity of the master via CAN bus. In case there is
detected any problem with master, BO:CtrlHBeat FD on the slave controller is activated.
ProtectionMode [ ACTIVE / NOT ACTIVE ]
ACTIVE:
Standard setting – all protections are active.
2-nd level protections are evaluated, GCB or MCB is controlled.
NOT ACTIVE:
2-nd level protections are just evaluated, but GCB or MCB is NOT opened (no actions).
Exceptions are Emergency Stop and alarms types Sd override.
Recommended settings
StartStopBtn= DISABLED
ProtectionMode = NOT ACTIVE
StartStopBtn= ENABLED
ProtectionMode = ACTIVE
StartStopBtn
ENABLED: Standard settings for systems where engine start/stop and GCB is controlled from controller.
DISABLED: Disables the engine Start and Stop buttons and corresponding Binary start/stop signals.
Inteli NT GeCon-MARINE SPI, SW Version 3.2, ©ComAp – July 2015
IGS-NT-GeCon-MARINE-SPI-3.2.PDF
[ EACH / COMMON ]
Setting for systems where engine is started separately. and
protection are controlled externally (not from controller).
Standard settings for system where engine start/stop and GCB is
controlled from controller.
[ ENABLED / DISABLED ]
(FV)
(FV)
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