Sensors And M-Bus Connection; En1434 Terminal Table - ABB F4HC Manual

5.2.1 Sensors and M-Bus connection

The connection of temperature sensors are shown in
figure 5.2 and table 5.1, according to EN1434.
Warning:Do not connect the M-Bus to the wrong
terminal or the meter can be seriously
damaged when the M-Bus loop is
powered.
1 – 5 – 6 – 2
Fig 5.2, Numbering of terminal according to
EN1434, ( numbering from left to right ).
3 – 7 – 8 – 4
10 – 11 24 – 25

5.2.1.1 EN1434 terminal table

Termi
nal
no. Signal description
1 High** temp. sensor*
2 High** temp. sensor*
3 Low** temp. sensor*
4 Low** temp. sensor*
5 High** temp. sensor
6 High** temp. sensor
7 Low** temp. sensor
8 Low** temp. sensor
10 Flow sensor signal input (+)
11 Flow sensor signal input (-)
24 M-Bus interface
25 M-Bus interface
Table 5.1, terminal connection according to EN1434
* Only for 4-Wire connection
** High = Supply, Low = Return
6