eQ-3 Homematic HMW-IO-12-Sw7-DR Installations- Und Bedienungsanleitung Seite 28

Control side
On the control side however, only non-hazardous
safety extra-low voltages are used. Since there is
electrical isolation between the load and control sides
in the module, no mains power capable wires have to
be used. Using interior telecommunications wiring or
comparable control wiring is recommended. Make sure
however, that the wires of the load and the control side
are separated conforming with VDE regulations within
the sub-distribution. Keep a minimum spacing of 8 mm
between the two types of wiring.
When connecting the RS485 bus, the A terminals
(1.3), the B terminals (1.7), the 24 V power supply
and the ground terminal (1.8) of the modules of a
sub-distribution (max. 127 segments) are to be con-
nected with one another. A connection diagram with
bus system is provided in the system manual. When
using several modules, a bus termination is required.
Information on the connections is provided in the
respective operating instructions.
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