Description
3.5 Three-phase devices 5 A
7KT16 energy meter
Equipment Manual, 09/2020, 2514284147-04
51
3.5.4.3
Tariffs
In addition to the total and partial energies, two independent tariffs can be managed for
energy measurement.
•
The tariff is normally selected using the digital input but can be selected via the
communication protocol as an option.
•
The TAR-A input function is available for selecting the two tariffs. Activate the TAR-A input
function to make the selection shown in the table:
TAR-A
Tariff
ON
1
OFF
2
The device has a programmable AC voltage input.
•
The default function setting is TAR-A, which makes selection between tariffs 1 and 2
possible.
•
The text
tAr-1
or
tAr-2
flashes to indicate the selected tariff and the increasing counter
reading.
•
The counter readings for the tariffs are displayed as subpages of the system counters
(total and phase, if activated).
•
For devices with Modbus, you can select the active tariff using a special command in the
Modbus protocol. You can find more information in chapter Modbus address table for