Installation - HomeMatic HMW-IO-12-Sw7-DR Installation And Operating Manual

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Installation

Observe the installation instructions for installa-
tions in distribution systems.
Position the DIN rail device on the DIN rail and lock it
in place.
Make sure that the spring latch is completely
latched and that the device is seated solidly on
the rail.
Insulate the wire ends of the power line, the line to
load, the lines to the buttons, to the power supply and
the bus line to a length of 8 mm, without damaging the
wire itself. Observe the specified wire cross-sections!
Wire the power supply connection and the load con-
nection with the 230 V power supply according to the
following connection diagrams.
Ensure that all connections are fastened secu-
rely to the installation terminals.
Wire the DIN rail modules for the bus power supply
(terminals 1.4 and 1.8) with the power supply. Make
sure that the connections are made with correct polari-
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ty on the terminals.
Note that actual buttons (normally open) and
no rocker switches or push-button switches are
used in the button input circuits. Connect each
of the buttons between GND (terminal 1.8) and the
respective button input (terminal S1, ...).
The maximum wire length from button to
module is different depending on the wire used.
A length of 50 m should never be exceeded
however.
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