ABB REB650, Technical Manual

Page: 336 / 504

of operations the breaker can perform at the rated current and at the rated fault current,
respectively.
The remaining life is calculated separately for all three phases and it is available as a
monitored data value
CBLIFE_A (_B, _C)
. The values can be cleared by setting
the parameter CB wear values in the clear menu from LHMI.
Clearing CB wear values also resets the operation counter.
Alarm limit check
When the remaining life of any phase drops below the LifeAlmLevel threshold setting,
the corresponding circuit breaker life alarm
CBLIFEAL
is activated.
It is possible to deactivate the
CBLIFEAL
alarm signal by activating the binary input
BLOCK
. The old circuit breaker operation counter value can be taken into use by
writing the value to the Initial CB Rmn life parameter and resetting the value via the
clear menu from LHMI.
It is possible to deactivate the
CBLIFEAL
alarm signal by activating the binary input
BLOCK
.
12.17.7.7 Circuit breaker spring charged indication
The circuit breaker spring charged indication subfunction calculates the spring
charging time.
The operation of the subfunction can be described by using a module diagram. All the
modules in the diagram are explained in the next sections.
GUID-37EB9FAE-8129-45AB-B9F7-7F7DC829E3ED V1 EN
Figure 136: Functional module diagram for circuit breaker spring charged indication
and alarm
Section 12
1MRK 505 277-UUS C
Monitoring
330
Technical Manual