ABB Relion 670 series, Technical Manual

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IEC05000500-2-en.vsdx
V
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lu
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Y
t
V
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V
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Value Reported
(1st)
Value Reported
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Value Reported
Y1
Y2
Y5
Value Reported
Value Reported
Y3
Y4
(*)Set value for t: XDbRepInt
t (*) t (*) t (*) t (*)
IEC05000500 V2 EN-US
Figure 536: Periodic reporting
Magnitude dead-band supervision
SEMOD54417-163 v5
If a measuring value is changed, compared to the last reported value, and the change is larger than
the ±ΔY pre-defined limits that are set by user (
UDbRepIn), then the measuring channel reports
the new value to a higher level. This limits the information flow to a minimum necessary.
Figure 537 shows an example with the magnitude dead-band supervision. The picture is simplified:
the process is not continuous but the values are evaluated with a time interval of one execution
cycle from each other.
Section 16 1MRK 502 066-UUS B
Monitoring
1032
Technical manual