Mounting The Modules - Siemens SIMATIC 500 Series Description And Operating Instructions

4 Setting Up

4.4.3 Mounting the modules

Locking slide
Fig. 9: Mounting a module on a standard DIN rail
PROFIBUS OLM
System
CH 1 CH 2 CH 3
CH 2
CH 3
Receive
Signal
Intensity
GND
CH 1
Toothed washer
Fig. 10: Mounting a module on a mounting plate
Version 2.1 10/01
The OLM modules can either be mounted on a 35 mm DIN
rail in accordance with DIN EN 50022 or directly on to a
flat surface.
Mounting on a DIN rail
Mounting on a mounting plate
The modules have three through-holes. This allow it to be
mounted on any flat surface, e.g. on the mounting plate of
61.2 mm
a switch cabinet.
Ø 3 mm
Ø 3 mm
Install the device in a location where the climatic and
mechanical limit values defined in the Technical Data
can be complied with.
Ensure that there is sufficient room to connect the bus
and power supply cabling.
Connect the optical fiber line before mounting the
module. This is easier than connecting it after the
module has been installed.
Only mount the module on a low-impedance and
low-induction grounded DIN rail or base plate. No
other grounding measures are required.
Hang the top snap-in hooks of the module into the DIN
rail and press the underside onto the rail (as shown in
Fig. 7) until it audibly clicks in.
To remove the module, pull down on the locking slide.
Drill three holes in the mounting plate corresponding to
the drilling template in Fig. 8.
Secure the modules with machine bolts (e.g. M 3 x 40).
Ensure that there is a reliable electrical connection
between the module housing and the mounting plate.
Place toothed washers under the bolt heads to pierce
the varnish.
4.4 Installation
23