Diehl Metering IZAR Receiver M-Bus Guide D'installation page 15

English
Terminal Value
1 M-Bus input
polarity 1
2 M-Bus input
polarity 2
3 M-Bus output
polarity 1
4 M-Bus output
polarity 2
Connection example see fig. IV.
8. Display elements
A red and green LED next to the electric connections of
the IZAR RECEIVER M-Bus show the corresponding oper-
ational conditions.
Display
The red LED illuminates
once for less than 3
seconds.
The green LED flashes
briefly.
The red LED illuminates
continuously after start.
IZAR RECEIVER M-Bus
Description
Two-wire connection
IZAR / HYDRO-CENTER
(polarity irrelevant).
M-Bus two-wire connec-
tion to the next device
(if further devices are
to be connected to the
same M-Bus).
Operational condition
Start
Operation A valid radio
telegram was received.
Hardware fault
In this case, the self-test
has failed and the IZAR
RECEIVER M-Bus has to
be replaced.
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