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SEB Divisione Elettronica e Sistemi
DISPLAY AND PROGRAMMING
D3F - NFILT COUNTER SET-UP (programmable)
Programming of the number of periods NFILT used by the frequency thresholds (START
condition and drop-off - see par. 1.1).
F>
NFILT= n
n
filter value programmable from 2 to 9 periods
The frequency threshold goes in the START condition when the measured frequency
exceeds the related threshold value for at least NFILT times to avoid unsuitable trips. The
threshold drops-off when the measurement of the frequency is “below” the threshold value
in the least NFILT periods.
The value of the NFILT counter is independently programmable for each threshold.
D4F - TIME DELAY SET-UP (programmable)
TI INDIP
xx.xx s
Set-up of time-delay to the activation (TRIP) of the programmed output relays when the
measured frequency exceeds the threshold level.
xx.xx
time delay value programmable from 00.02 to 99.99 seconds
Example:
TI INDIP
02.50 s
D5F - ADDITIONAL TIME DELAY SET-UP (programmable)
TA F>
xx.xx s
The additional time delay TA is programmable from 00.00 to 99.99 seconds; please note
that at least one of the digital inputs should be programmed to activate time delay function
(ref. G1, G2, G3 – paragraph 5.7).
D6F - DIGITAL INPUT ACTIVE ON THRESHOLD (not programmable)
TA F>
eeeeeeee
It shows the digital input programmed to activate the additional time delay TA on the
displayed threshold.
The parameter eeeeeeee can show one of the following values:
DISABLED none of the digital inputs has been programmed to activate an
additional time delay related to threshold F>
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