ABB RELION 670 Series Technical Manual page 1063

1MRK 502 066-UUS B
Alarm limit check
The IPOWALPH alarm is activated when the accumulated energy exceeds the set value
AlmAccCurrPwr .
IPOWLOPH is activated when the accumulated energy exceeds the limit of the
setting.
The IPOWALPH and IPOWLOPH outputs can be blocked by activating the binary input BLKALM.
16.4.7.5 Circuit breaker operation cycles
The circuit breaker operation cycles subfunction counts the number of closing-opening sequences
of the breaker. The operation counter value is updated after each closing-opening sequence. The
operation is described in
POSCLOSE
POSOPEN
RSTCBWR
BLOCK
BLKALM
IEC12000617 V2 EN-US
Figure 551: Functional module diagram for circuit breaker operation cycles
Operation counter
The operation counter counts the number of operations based on the state of change of the
auxiliary contact inputs POSCLOSE and POSOPEN.
The number of operations NOOPER is given as a service value. The old circuit breaker operation
counter value can be used by adding the value to the
Clear CB wear in the Clear menu on the LHMI or activating the input RSTCBWR.
Alarm limit check
OPERALM is generated when the number of operations exceeds the set value of the
threshold setting.
If the number of operations increases and exceeds the limit value set with the
setting, the OPERLO output is activated.
The binary outputs OPERALM and OPERALO are deactivated when the BLKALM input is activated.
16.4.7.6 Circuit breaker operation monitoring
The circuit breaker operation monitoring subfunction indicates the inactive days of the circuit
breaker and gives an alarm when the number of days exceed the set level. The operation of the
circuit breaker operation monitoring is shown in
Technical manual
Figure 551.
Operation
counter
Alarm limit
Figure
OPERALM
Check
InitCounterVal parameter and can be reset by
552.
Section 16
Monitoring
LOAccCurrPwr
GUID-D3481D26-2E42-455E-8DB2-91538421F3B1 v8
NOOPER
OPERLO
OperAlmLevel
OperLOLevel
GUID-6DAE4C6B-BD66-49CD-817D-08E4EBF47DE0 v8
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