Inputs And Outputs; Tariff Inputs - ABB A43 User Manual

Technical Description

5.5 Inputs and Outputs

Inputs/outputs are built with optocouplers and are galvanically isolated from
General
other meter electronics. They are polarity independent and handle both DC and
AC voltage.
An input that is not connected equals having its voltage off.
The equivalent circuitry of the outputs is an ideal relay in series with a resistor.
Functionality The inputs count pulses, register activity and current status and the data can
be read directly on the meter display or via communication
of inputs
Register activity can be reset via communication or via the buttons directly on
the meter.
Functionality of The outputs can be controlled by communication, alarm or by the internal clock.
outputs

5.5.1 Tariff Inputs

On meters with tariff functionality, the tariffs are controlled either via communi-
Tariff control
cation, the internal clock or by 1 or 2 tariff inputs.
Tariff control via inputs is done by applying a proper combination of "voltage" or
"no voltage" to the input(s). Each combination of "voltage"/"no voltage" will re-
sult in that the meter will register the energy in a particular tariff register.
In combined meters with both active and reactive metering, both quantities are
controlled by the same inputs and the active tariff for active and reactive energy
will always be the same.
The active tariff is displayed on the LCD by the text "Tx" in the status field, where
Indication of
x is the tariff number. The active tariff can also be read via communication.
active tariff
Input coding, meters with 4 tariffs
The coding of the inputs is binary. The following table describes the default
cod-ing.
Input 4
OFF
OFF
ON
ON
A43/A44
User Manual
Input 3 Tariff
OFF = T1
ON = T2
OFF = T3
ON = T4
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Revision: C