ComAp MainsPro - TRIP and Fault Reset; TRIP Event and Status; Fault Reset Procedure

MainsPro, SW version 1.4, ©ComAp – January 2013
MainsPro Application Guide
2-5
TRIP and Fault Reset description
TRIP
TRIP may be considered as event or status of the unit:
TRIP event:
Starts in the moment of terminating the count-down of any protective function with delay, or in the
moment of activation of any immediate protective function.
As a result of the trip event, are e.g. the following consequences:
o Immediate deactivation of outputs !CommTrpPer and !CommTrpImp or activation of
CommTrpPer and CommTrpImp
o LED TRIP goes to red
o The appropriate counter in the statistics screen increments
o The cause of the TRIP event is recorded among the last five history events
o The Last Trip Time timer starts to count time and the last trip indication is set
TRIP status:
Starts at the moment of TRIP event
During this status, the appropriate outputs are kept in fault position
During this status, it is not possible to perform Fault reset
TRIP status is active until a successful Fault reset. This may not be done before all measured and
evaluated values are within preset limits.
If during the TRIP status, caused by some value, another value overreached its limits for TRIP
evaluation, this second overreach is not considered as TRIP. It does not cause a second TRIP
event. However, as a consequence of this, the TRIP duration may be prolonged until the moment
when both (all) values are within limits.
If the BI Disable is set to ENABLED and the BI Disable is activated during this state, the TRIP
status is terminated and the fault is reset.
If the BI Disable is set to ENABLEDexl.TRP and the BI Disable is activated during this state, it will
have no effect on the unit.
Fault reset
Fault reset is an event, caused by one of the following reasons:
FltRes button is pressed
Binary switch Fault reset is activated
Automatic fault reset timer set by setpoint Basic: Auto FR Del, has count down. The counter is
started in the moment when all evaluated values are back within their limits. If during the count-
down another fault status appears, the timer is reset and started no sooner than after all evaluated
values are back within limits again.
The above mentioned reasons are a trigger to provide Fault reset, however, it is successfully done
only in case that the TRIP status is activated and all evaluated values have returned back into limits. If
the TRIP status is not activated, or it is activated, but any of the values is still out of limits, Fault reset
is not done and any of the mentioned triggers is forgotten. I.e., the unit may not be „provisionally“ fault-
reset.
By a successful Fault reset, the TRIP status is terminated.