Siemens SIMATIC NET PROFIBUS - Manual (Page 411)

15 Version 1.0 8/00
4 Setting Up 4.1 Safety notice
4 Setting Up
Only use the PROFIBUS OLM as described in this ”Description and Operating Instructions“.
Pay particular attention to all the warnings and safety instructions.
Only operate the modules with a safety extra-low voltage in accordance with IEC 950/EN 60 950/VDE 0805 with
a maximum rating of +32 V (typically +24 V).
The power source must comply with NEC, Class 2, regulations as stipulated by UL/CSA.
Pay attention to the electrical limit values when connecting the power supply to the signaling contacts:
max. voltage 60 V DC, 42 V AC.
The connected power supply must also be safety extra-low voltage in accordance with IEC 950/ EN 60 950/
VDE 0805 and comply with NEC, Class 2, regulations as stipulated by UL/CSA.
DANGER: Never connect the PROFIBUS OLM to the main power supply.
Only install the device in a location where the climatic and mechanical limit values given in the Technical Data
can be complied with.
WARNING: Do not look directly into the aperture of the optical transmitting diode or the optical fiber.
The light beam which is emitted could endanger your eyesight.
OLM/P11
OLM/P12
OLM/G11-1300
OLM/G12-1300 The optical radiated power of the com-
ponents used in this device does not
represent a potential health hazard of any
description under normal, foreseeable
conditions, and it complies with Class 1 in
accordance with IEC 60825-1:1994+A1:1997
resp. the Degree of Endangerment 1 in
accordance with IEC 60825-2:1993.
OLM/G11
OLM/G12
OLM/G12-EEC Non-visible LED radiation.
Do not look into the beam, not even with
optical instruments. LED class 1M.
Classification according
IEC 60825-1:1993+A1:1997+A2:2000.
4.1 Safety notice