SIMATIC NET PROFIBUS, Optical Link Module
Operating Instructions, 07/2008, A2B00065774O, Edition V1.5
iii
Qualified Personnel
The device/system may only be set up and operated in conjunction with this documentation. Only qualified
personnel should be allowed to install and work on the equipment. Qualified persons are defined as persons
who are authorized to commission, to ground, and to tag circuits, equipment, and systems in accordance with
established safety practices and standards.
Correct Usage of Hardware Products
Please note the following:
Warning
This device may only be used for the applications described in the catalog or the technical description, and only in
connection with devices or components from other manufacturers which have been approved or recommended by
Siemens. This product can only function correctly and safely if it is transported, stored, set up, and installed
correctly, and operated and maintained as recommended.
Note: If PROFIBUS OLMs are supplied via long 24 V supply lines or over networks, measures must be taken
to prevent interference by strong electro magnetic pulses on the supply lines. These can occur, for example,
due to lightning strikes or when heavy inductive loads are switched. The robustness of the PROFIBUS OLM
against electromagnetic interference was verified by the Surge Immunity Test according to EN61000-4-5. For
this test, overvoltage protection for the voltage supply lines is necessary. The Dehn Blitzductor VT AD 24V
Type no. 918402 or a comparable protection element is, for example, suitable. Manufacturer: DEHN+S
Ö
HNE
GmbH+Co.KG Hans Dehn Str.1 Postfach 1640 D-92306 Neumarkt, Germany
Brands
All names which are labeled with the trademark symbol
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are registered trademarks of Siemens AG. Third
parties using for their own purposes any other names in this document which refer to trademarks might
infringe upon the rights of the trademark owners.