ZENNER MULTIDATA WR3 - Manual (Page 5)

5
If water meters with a potential free reed contact
are connected to the inputs the connection can
be made in any direction.
Take care of the polarity when connecting to a
BMS.
The connectors are given twice for the incoming
and outgoing of the M-bus wire.
B
H
T
Height: H = 106 mm
Width: B = 126 mm
Depth: T = 54 mm
Communication
At calculators with two pulse outputs typically the
first output (I/O1) gives the energy and the sec-
ond (I/O2) the volume information.
The pulse value is permanently set and corre-
sponds to the last position of the associated dis-
play value.
Example:
Output 1 = energy output
Energy display = XXXXX.XX MWh
Last position = 0.01 MWh = 10 kWh
Output pulse = 10 KWh
The calculator can be ordered with two inputs op-
tionally. The pulse value can be called up in the
display (see the display overview, Level 1).
M-Bus (optional)
The optional M-Bus interface complies with the
norm EN 1434-3 and operates with 2400 baud
fixed. It can be set to 300/9600 baud if neces-
sary.
The display resolution shall be selected such that
the display can not run over within a period of
one year.