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Signal acquisition logic in DPSY01
“DPSY01_3PH_STATE”
(511001 3102011001)
To select and operate
condition logics
Event
Suppression
detector
BI signal selected by
setting [DPSY01A-NOPSG]
BI signal selected by
setting [DPSY01A-NCLSG]
“DPSY01_ F_QLT_SPP”
(511001 8102011F5F)
Figure 4.2-41 Acquisition of single-phase signal at DPSY01
‡Note: In Figure 4.2-41 two signals can be issued “DPSY01_3PH_STATE” and
“DPSY01_F_QLT_SPP”, which are the same as the signals in the Figure 4.2-40.
Event suppression
If the status of a device “chatters” for a short time, the DPSY function will receive iterative
signals from the device. Such iterative signals can cause extra burden for the DPSY function;
hence, event suppression can be required to reduce the additional burden created.
Figure 4.2-42 Iterative signals and signals suppressed
Figure 4.2-42 shows that the iterative signals received from the device have been
suppressed by the event suppression function. The suppression commences on receipt of the
seventh signal (at Time ‘B’). This is because the function can count the iterative number of
incoming signals. Detection commences at Time ‘A’, the setting [DPSY-NELD] is provided so
that the suppression commences at Time B. The setting [DPSY-TELD] is pertains to the
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