Mounting the expansion module horizontally on 35 mm
DIN rail is the preferred method.
To mount an expansion module on a 35 mm DIN rail,
complete the following steps:
1. Securely mount a 20 cm (8 in.) or longer
section of 35 mm DIN rail, horizontally and
centered in the desired space, so that the
expansion module mounts in the position
shown in Figure 2.
2. Pull the two bottom mounting clips outward
from the expansion module to the extended
3. Hang the expansion module on the DIN rail
by the hooks at the top of the DIN rail channel
on the back of the expansion module (Figure
3), and position the expansion module snugly
against the DIN rail.
4. Push the bottom mounting clips inward (up)
to secure the expansion module on the DIN
rail.
To remove the expansion module from the DIN rail,
pull the bottom mounting clips out to the extended
position and carefully lift the expansion module off
the DIN rail.
Wall mount applications
About this task:
To mount an expansion module directly on a wall or other
flat vertical surface, complete the following steps:
1. Pull the two bottom mounting clips outward
and ensure they are locked in the extended
position, as shown in Figure 3.
2. Mark the mounting hole locations on the wall
using the dimensions in Figure 3 and one of
the mount positions shown in Figure 2. You
can also hold the expansion module up to the
wall or surface in a proper mount position and
mark the hole locations through the mounting
clips.
3. Drill holes in the wall or surface at the marked
locations, and insert appropriate wall anchors
in the holes (if necessary).
4. Hold the expansion module in place, and
insert the screws through the mounting clips
and into the holes (or anchors). Carefully
tighten all of the screws.
Important:
Do not overtighten the mounting
screws. Overtightening the screws may damage
the mounting clips.
Mounting features and dimensions
See the following figure for mounting dimensions listed
in millimeters and inches. Inches are listed in parenthesis.
The following figure also illustrates the DIN rail channel
and the mounting clips in an extended position.
Figure 3: Back of expansion module
Wiring
WARNING
Risk of Electric Shock:
Disconnect or isolate all power supplies before
making electrical connections. More than one
disconnection or isolation may be required to
completely de-energize equipment. Contact with
components carrying hazardous voltage can cause
electric shock and may result in severe personal injury
or death.
AVERTISSEMENT
Risque de décharge électrique:
Débrancher ou isoler toute alimentation avant
de réaliser un branchement électrique. Plusieurs
isolations et débranchements sont peut-être
nécessaires pour -couper entièrement l'alimentation
de l'équipement. Tout contact avec des composants
conducteurs de tensions dangereuses risque
d'entraîner une décharge électrique et de provoquer
des blessures graves, voire mortelles.
IOM2721 Input/Output Module Installation Guide
3