ComAp IM-NT - Process Limitation

InteliMains
NT
, SW version 3.0
InteliMains-NT-BTB-3.0-Reference Guide.pdf, ©ComAp – June 2013
53
 bus voltages are within the limits (Sync ctrl:Phase window, Voltage window)
 there is voltage on both, one or none of the buses and closing to dead bus is enabled by
Process control:DeadBusClosing (refer to this setpoint in Context Help or in APPENDIX of
this document to get more information)
 binary input BTB DISABLE is not closed
 it is enabled by setting of Process control:Synchro enable, Mains coupling setpoints
NOTE:
If voltage on both left and right buses disappears, the BTB is automatically opened regardless of
Process control:DeadBusClosing.
After the BTB is closed, InteliMains-BTB deactivates all regulation loops and they are taken over by
the IM-M(G)CB.
7.3 Process Limitation
It is possible to influence the behavior of the controller in MAN and AUT mode and limit the process.
There are many possibilities but only some of them allow valid function of the breaker (e.g. the breaker
will not be able to close if Synchronization is set to NONE and DeadBusClosing set to NONE as well).
Process Limitation is also influenced by the setpoint ProcessControl:Mains coupling, so even though
it is possible to e.g. synchronize two Buses together, controller will block this function if both Buses are
connected to Mains incomers and Mains coupling is DISABLED.
SYNCHRO ENABLE
DEADBUSCLOSING
SHORT DESCRIPTION
NONE
 It is not possible to synchronize Buses together if there are
healthy voltages on both buses
L->R
 It is possible to synchronize Buses together if there are healthy
voltages on both buses and the Left Bus is available for
synchronizing (i.e. the synchronization will not be successful if
Left Bus is connected to the Mains)
R->L
 It is possible to synchronize Buses together if there are healthy
voltages on both buses and the Right Bus is available for
synchronizing (i.e. the synchronization will not be successful if
Right Bus is connected to the Mains)
BOTH
 It is possible to synchronize Buses together if there are healthy
voltages on both buses (the controller will synchronize Left Bus
to the Right Bus if the Left Bus is not connected to the Mains, if
Left Bus is connected to the Mains, controller synchronizes Right
Bus to the Left Bus)
NONE
 It is not possible to close the breaker if there is healthy voltage
on one of the Buses and there is no voltage on the other one or
if there is no voltage on both Buses
L->R
 It is possible to close the breaker if there is healthy voltage on
the Left Bus and there is no voltage on the Right Bus
R->L
 It is possible to close the breaker if there is healthy voltage on
the Right Bus and there is no voltage on the Left Bus
BOTH
 It is possible to close the breaker if there is healthy voltage on
one of the Buses and there is no voltage on the other one