Installation guide

— 6 —
Wall Mounting (optional)
For some applications, you will find it convenient to mount EDS-308/305 on
the wall, as illustrated below.
STEP 1: Remove the
aluminum DIN-Rail
attachment plate from
EDS-308/305’s rear panel,
and then attach the wall
mount plates, as shown in
the diagram below.
⇒
top
plate
bottom
plate
STEP 2:
Mounting EDS-308/305 on the wall requires 4 screws.
Use the switch, with wall mount plates attached, as a
guide to mark the correct locations of the 4 screws. The
heads of the screws should be less than 6.0 mm in
diameter, and the shafts should be less than 3.5 mm in
diameter, as shown in the figure at the right.
6.0 mm
3.5 mm
NOTE Before tightening screws into the wall, make sure the screw head and
shank size are suitable by inserting the screw into one of the keyhole-
shaped apertures of the Wall Mounting Plates.
Do not screw the screws in all the way—leave about 2 mm to allow room for
sliding the wall mount panel between the wall and the screws.
STEP 3: Once the screws are
fixed in the wall, insert the four
screw heads through the large
parts of the keyhole-shaped
apertures, and then slide
EDS-308/305 downwards, as
indicated. Tighten the four screws
for added stability.
⇒
Wiring Requirements
WARNING
Do not disconnect modules or wires unless the power supply has
been switched off or the area is known to be non-hazardous. The
devices may only be connected to the supply voltage shown on
the type plate.
The devices are designed for operation with a Safety Extra-Low
Voltage. Thus, they may only be connected to the supply voltage
connections and to the signal contact with the Safety Extra-Low
Voltages (SELV) in compliance with IEC950/ EN60950/
VDE0805.
WARNING
Substitution of components may impair suitability for Class I,
Division 2, and Zone 2. These devices must be supplied by an
SELV source as defined in Low Voltage Directive 73/23/EEC
and 93/68/EEC.