13.2.6
Monitored data
Table 294:
ETPMMTR Monitored data
Name
Type
Values (Range)
Unit
Description
EAFACC
REAL
-
MWh
Accumulated forward active
energy value
EARACC
REAL
-
MWh
Accumulated reverse active
energy value
ERFACC
REAL
-
MVArh
Accumulated forward reactive
energy value
ERRACC
REAL
-
MVArh
Accumulated reverse reactive
energy value
MAXPAFD
REAL
-
MW
Maximum forward active
power demand value for set
interval
MAXPARD
REAL
-
MW
Maximum reverse active
power demand value for set
interval
MAXPRFD
REAL
-
MVAr
Maximum forward reactive
power demand value for set
interval
MAXPRRD
REAL
-
MVAr
Maximum reactive power
demand value in reverse
direction
13.2.7
Operation principle
The instantaneous output values of active and reactive power from the Measurements
(CVMMXN) function block are used and integrated over a selected time
tEnergy
to
measure the integrated energy. The energy values (in MWh and MVarh) are available
as output signals and also as pulsed output which can be connected to a pulse counter.
Outputs are available for forward as well as reverse direction. The accumulated energy
values can be reset from the local HMI reset menu or with input signal RSTACC.
The maximum demand values for active and reactive power are calculated for the set
time
tEnergy
and the maximum value is stored in a register available over
communication and from outputs MAXPAFD, MAXPARD, MAXPRFD, MAXPRRD
for the active and reactive power forward and reverse direction until reset with input
signal RSTDMD or from the local HMI reset menu.
Section 13
1MRK 505 277-UUS C
Metering
352
Technical Manual
Summary of Contents for REB650
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