A071108 V2 EN
Figure 335: 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 in 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 Counter initial Val
parameter and by setting the parameter CB wear values in the clear menu from
WHMI or LHMI.
Alarm limit check
The OPR_ALM operation alarm is generated when the number of operations
exceeds the value set with the Alarm Op number threshold setting. However, if the
number of operations increases further and exceeds the limit value set with the
Lockout Op number setting, the OPR_LO output is activated.
The binary outputs OPR_LO and OPR_ALM are deactivated when the BLOCK input
is activated.
7.1.4.5
Accumulation of I
y
t
Accumulation of the I
y
t module calculates the accumulated energy.
The operation of the module can be described with a module diagram. All the
modules in the diagram are explained in the next sections.
A071109 V2 EN
Figure 336: Functional module diagram for calculating accumulative energy
and alarm
Section 7 1YHT530004D05 D
Condition monitoring functions
612 615 series
Technical Manual
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