ComAp IM-NT - Follow Function for Breaker Control in AUT Mode

InteliMains
NT
, SW version 3.0
InteliMains-NT-BTB-3.0-Reference Guide.pdf, ©ComAp – June 2013
84
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
0
1
0
1
0
1
BO/BI
CB fdb
CB fail
CB close
/open
0
1
0
1
0
1
2s5s
 In case that CB fail is detected after switching the controller on (CB is closed), the CB OFF coil
output is activated immediatelly.
 Important:
In case that BTB feedback is active (BTB is expected to be closed) and “BTB fail” is
reported due to previous incorrect manipulation of BTB, in the moment of Fault reset, the
BTB fail is cleared and the controller internally goes to “closed” state. I.e. BTB fdb status is
confirmed and the output BTB close/open is energized.
9.1.4 Follow function for breaker control in AUT mode
Only in MCB application.
Using setpoint ProcessControl:BrkCtrl in AUT behavior of breaker control can be adjusted.
PROCESSCONTROL:BRKCTRL IN
AUT
CONTROLLER BEHAVIOR
NORMAL
Breaker is controller by the controller.
COX (FOLLOW)
Breaker is controlled externally and the controller does not
attempt to control it nor any alarms are issued. Synchronization
process can be started by the FORCE SYNC input if it is allowed by
the setpoints ProcessControl:Synchro enable. Synchronization
in COX(FOLLOW) does not have any timeout and controller
keeps voltages synchronized indefinitely (i.e. until FORCE SYNC is
opened or the breaker is closed externally).