ABB REG670 - Circuit Breaker Status

time is calculated by adding the value set with the CloseTimeCorr (t3+t4) setting to
the measured closing time.
The last measured opening travel time (TTRVOP) and the closing travel time
(TTRVCL) are given as service values.
The values can be reset using the Clear menu on the LHMI or by activation the input
RSTCBWR.
Alarm limit check
When the measured opening travel time is longer than the value set in the tTrOpenAlm
setting, the TRVTOPAL output is activated. Similarly, when the measured closing
travel time is longer than the value set in the tTrCloseAlm setting, the TRVTCLAL
output is activated.
It is also possible to block the TRVTCLAL and TRVTOPAL alarm signals by activating
the BLOCK input.
16.4.7.2 Circuit breaker status
The circuit breaker status subfunction monitors the position of the circuit breaker, that
is, whether the breaker is in the open, closed or error position. The operation is
described in Figure 429.
Phase current
check
Contact
position
indicator
POSCLOSE
POSOPEN
I3P-ILRMSPH
OPENPOS
CLOSEPOS
INVDPOS
IEC12000613-3-en.vsd
IEC12000613 V3 EN
Figure 429: Functional module diagram for monitoring circuit breaker status
Phase current check
The module compares the phase current I3P-ILRMSPH to the AccStopCurr setting. If
the current in the selected phase exceeds the set level, it is reported to the contact
position indicator module as closed circuit breaker.
Contact position indicator
The circuit breaker status is open when the auxiliary input contact POSCLOSE is low,
the POSOPEN input is high and the phase current is less than the setting AccStopCurr
value. The circuit breaker is closed when the POSOPEN input is low and the
POSCLOSE input is high. The breaker is in the error state if both auxiliary contacts
1MRK502052-UEN B Section 16
Monitoring
903
Technical manual