Connection And Configuration Of The Abb B21 Meter (Single-Phase) - ABB REACT 2 Series Product Manual

C
onnection and configuration of the ABB B21 meter (single-phase)
The indications set out below are necessary to connect the meter to the REACT2 system.
To avoid risks of electrical shock, all wiring operations must be carried out with the AC discon-
nect switch (or the supply meter) upstream of the meter disconnected.
LOADS and REACT SIDE
N L
COMM.
To REACT J3
logic board
5
3
N L
TO GRID
The energy meter ABB B21
installed where the electricity supply is single-phase.
meter (13mm).
printed on the meter (L and N) to the AC connection terminal block
and tighten the screws (tightening torque 3.0 Nm).
the rear of the ABB B21
the signals of the serial line and tighten the screws (torque 0.25 Nm):
Serial line terminal block
of the meter ABB B21
A (37)
B (36)
C (35)
REACT2-UNO METER connector
- 72 -
is a DIN rail device (2 modules) and must be
50
) respecting the correspondence between
50
Screw terminal on the
counterpart connector
54
1 (-T/R)
3 (+T/R)
4 (RTN)
RS485 METER
14
5 - Installation
53