18.9.2 Application
Limit counter (L4UFCNT) is intended for applications where positive and/or negative
sides on a binary signal need to be counted.
The limit counter provides four independent limits to be checked against the accumulated
counted value. The four limit reach indication outputs can be utilized to initiate
proceeding actions. The output indicators remain high until the reset of the function.
It is also possible to initiate the counter from a non-zero value by resetting the function to
the wanted initial value provided as a setting.
If applicable, the counter can be set to stop or rollover to zero and continue counting after
reaching the maximum count value. The steady overflow output flag indicates the next
count after reaching the maximum count value. It is also possible to set the counter to
rollover and indicate the overflow as a pulse, which lasts up to the first count after rolling
over to zero. In this case, periodic pulses will be generated at multiple overflow of the
function.
18.9.3 Setting guidelines
The parameters for Limit counter L4UFCNT are set via the local HMI or PCM600.
18.10 Running hour-meter TEILGAPC
18.10.1 Identification
Function Description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2 device
number
Running hour-meter TEILGAPC - -
18.10.2 Application
The function is used for user-defined logics and it can also be used for different purposes
internally in the IED. An application example is to accumulate the total running/energized
time of the generator, transformer, reactor, capacitor bank or even line.
Settable time limits for warning and alarm are provided. The time limit for overflow
indication is fixed to 99999.9 hours. At overflow the accumulated time resets and the
accumulation starts from zero again.
1MRK 506 369-UUS - Section 18
Monitoring
Line distance protection REL670 2.2 ANSI 849
Application manual
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