ABB RED650 - Page 624

Zero Clamping
Detection
P
Q
Maximum Power
Demand Calculation
Energy Accumulation
Calculation
STARTACC
STOPACC
RSTDMD
MAXPAFD
MAXPARD
MAXPRFD
MAXPRRD
EAFALM
EARALM
ERFALM
ERRALM
EAFACC
EARACC
ERFACC
ERRACC
ACCINPRG
EAFPULSE
EARPULSE
ERFPULSE
ERRPULSE
RSTACC
IEC13000185-2-en.vsd
IEC13000185 V2 EN-US
Figure 304: ETPMMTR Functional overview logical diagram
The integration of energy values is enabled by the setting EnaAcc and controlled by
the STARTACC and STOPACC inputs. If the integration is in progress, the output
ACCINPRG is high. Otherwise, it is low. Figure
305 shows the logic of the
ACCINPRG output. ACCINPRG is active when the STARTACC input is active and
the EnaAcc setting is enabled. When the RSTACC input is in the active state, the
output ACCINPRG is low even if the integration of energy is enabled. ACCINPRG
is deactivated by activating the STOPACC input.
T
F
STARTACC
ACCINPRG
RSTACC
³1
q
-1
STOPACC
&
FALSE
&
EnaAcc
IEC13000186-4-en.vsd
q
-1
= unit delay
IEC13000186 V4 EN-US
Figure 305: ACCINPRG Logic diagram
The accumulated energy values (in MWh and MVArh) are available as service
values and also as pulsed output depending on the ExxAccPlsQty setting, which can
be connected to a pulse counter. Accumulated energy outputs are available for
forward as well as reverse direction. The accumulated energy values can be reset to
initial accumulated energy values (ExxPrestVal) from the local HMI reset menu or
with the input signal RSTACC. Figure
306 shows the logic for integration of energy
in active forward direction. Similarly, the integration of energy in active reverse,
reactive forward and reactive reverse is done.
Section 16 1MRK 505 394-UEN A
Metering
618 Line differential protection RED650 2.2 IEC
Technical manual