EURO 46 Installation Manual
Page: 4
1.2 The Devices
1.2.1 The EURO 46 Bus Diagram
NOTE 5: If an expansion module with a power supply on board is connected, the D2+
terminal MUST NOT be connected between the main bus and module.
All EURO peripherals; LCD keypads,
readers, expanders etc. are
connected via the D1-, D2+, D3 and
D4 terminals. This is an example of
what a typical EURO 46 bus may look
like.
General Principles:
NOTE 1: No alarm system cable
should be run with other cables
carrying AC or digital signals.
NOTE 2: The cables should be
protected by the use of grommets
where appropriate.
NOTE 3: For greater than 1000m
range standard isolated RS485
repeaters are required.
NOTE 4: There MUST be a ferrite
bead fitted to one of the outgoing
data lines and secured inside the
EURO 46 case itself. The Ferrite bead
is supplied packaged with a cable-tie
which must be used to secure it in
the case and prevent it shorting any
electrical contacts.
There must also be a ferrite bead
fitted to the data wires of a EURO-
PROXE (if connected). The Ferrite
bead is supplied with the reader.
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