ABB Relion 650 Series Technical Manual page 474

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Zero Clamping

IEC13000185 V2 EN-US

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

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.

= unit delay

IEC13000186 V4 EN-US

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

in active forward direction. Similarly, the integration of energy in active reverse,

reactive forward and reactive reverse is done.

Maximum Power

Demand Calculation

Energy Accumulation

shows the logic for integration of energy

1MRK 511 424-UEN B

IEC13000185-2-en.vsd

shows the logic of the

IEC13000186-4-en.vsd

Bay control REC650 2.2 IEC

Technical manual