User guide

Hardware Planning
102
890 USE 108 00 August 2001
DIN Carrier Rails
Overview of DIN
Carrier Rails
Compact Controllers and their associated A120 I/O modules reside in backplane
housings that are installed on DIN EN 50 022 carrier rails. A DIN rail can be attached
to a flat mounting surface or hung on an EIA rack or in NEMA cabinet.
The DIN rail also provides the functional ground point for the Compact system.
This is a DIN EN 50 022 Carrier Rail.
Two Sizes of DIN
Rails
The backplanes can be mounted on a DIN rail with either a 7.5 mm or 15 mm
clearance from its mounting surface:
The following figure shows the differences in the DIN rail clearance sizes.
35 mm
7.5 mm
15 mm