ABB REC 561, User Manual, Page: 539 / 643

ABB Network Partner AB
Measurement of alternating
quantities
Version 1.0-00
1MRK 580 159-XEN
Page 7 - 20
The last value reported (Y1 in Fig. 3) serves as a basic value for further
measurement. A difference is calculated between the last reported and the
newly measured value during new sample and is multiplied by the time
increment. These products are added until the pre-set value is exceeded.
The last measured value (Y2 in Fig. 3) is reported and set as a new base
for the following measurements.
Fig. 3 Integrating dead-band supervision
1.3.3 Periodic reporting
Users can select the periodic reporting of measured value in time intervals
between 1 and 3600 s. The measuring channel reports the value even if it
has not changed for more than the set limits of amplitude or integrating
dead-band supervision. To disable periodic reporting, set the reporting
time interval to 0 s.
1.3.4 Periodic reporting
with the dead-band
supervision in
parallel
The newly measured value is reported:
• After each time interval for the periodic reporting expired, or
• When the new value is detected by the dead-band supervision func-
tion
You can select the amplitude dead-band and the integrating dead-band.
You can set periodic reporting in time intervals between 1 and 3600 sec-
onds.
1.3.5 Periodic reporting
with the dead-band
supervision in series
Periodic reporting can operate serially with the dead-band supervision.
This means that the new value is reported only if the set time period
expired and if the dead-band limit was exceeded during the observed time.
The reporting of the new value depends on setting parameters for the
dead-band and for the periodic reporting. Table 1 presents the dependence
between different settings and the type of reporting for the new value of a
measured quantity.
1 2 3 4 5 6
Y1
Y2 Y3
reported values
Y
t
(x80159-3)