Accumulation Of I Y T - ABB REG650 Technical Manual

Section 13
Monitoring
13.15.7.5
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Figure 211: Functional module diagram for counting circuit breaker operations
Operation counter
The operation counter counts the number of operations based on the state change of
the binary auxiliary contacts inputs POSCLOSE and POSOPEN.
The number of operations NO_OPR is available through the Monitored data view
on the LHMI or through tools via communications. The old circuit breaker
operation counter value can be taken into use by writing the value to the
CountInitVal parameter and can be reset by Clear CB wear in the clear menu from
LHMI.
Alarm limit check
The OPRALM operation alarm is generated when the number of operations exceeds
the value set with the OpNumAlm threshold setting. However, if the number of
operations increases further and exceeds the limit value set with the OpNumLO
setting, the OPRLOALM output is activated.
The binary outputs OPRLOALM and OPRALM are deactivated when the BLOCK
input is activated.
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Accumulation of I t
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Accumulation of the I t module calculates the accumulated energy.
The operation of the module can be described by using a module diagram. All the
modules in the diagram are explained in the next sections.
1MRK 502 034-UEN -
Technical Manual