Siemens 3AD8 Instruction Manual page 23

The RCU configuration has parameters that
allow configuration of the excessive cleared
faults functionality. These are:
The time window size specified in
seconds (maximum of 65,535 seconds,
18.2 hours), and
The number of cleared faults that occur
within the time window (maximum of
16).
Setting either the number of cleared faults
or the sliding window size fields to zero
disables the feature.
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