The remaining life is calculated separately for all three phases and it is available as amonitored data value CBLIFE_A (_B, _C). The values can be cleared by setting theparameter CB wear values in the clear menu from LHMI.Clearing CB wear values also resets the operation counter.Alarm limit checkWhen the remaining life of any phase drops below the LifeAlmLevel threshold setting, thecorresponding circuit breaker life alarm CBLIFEAL is activated.It is possible to deactivate the CBLIFEAL alarm signal by activating the binary inputBLOCK. The old circuit breaker operation counter value can be taken into use by writingthe value to the Initial CB Rmn life parameter and resetting the value via the clear menufrom LHMI.It is possible to deactivate the CBLIFEAL alarm signal by activating the binary inputBLOCK.14.18.7.7 Circuit breaker spring charged indicationThe circuit breaker spring charged indication subfunction calculates the spring chargingtime.The operation of the subfunction can be described by using a module diagram. All themodules in the diagram are explained in the next sections.GUID-37EB9FAE-8129-45AB-B9F7-7F7DC829E3ED V1 ENFigure 321: Functional module diagram for circuit breaker spring charged indicationand alarmSection 14 1MRK 506 335-UUS AMonitoring692Technical manual
