Siemens RS-485 Wartungshandbuch Seite 321

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Installing network components in cabinets
E.2 Installed in cabinet:
PROFIBUS Network Manual
System Manual, Edition 04/2009, C79000-G8976-C124-03
321
Outdoor installation
If you install the equipment outdoors, make sure that the additional enclosure is not
subjected to direct sunlight. This can lead to a considerable rise in temperature within the
enclosure.
Clearances
Make sure that there is adequate clearance around the component so that
the convection cooling of the component is not restricted
components do not cause neighboring components to heat up more than permitted
there is enough space for installing cabling
there is enough space to remove components for maintenance or repair.
Note
Regardless of the degree of protection of the casing, the electrical and optical ports are
always sensitive to
mechanical damage
damage caused by electrostatic contact discharge when touched
contamination by dust and fluids
Close unused ports with the supplied dust protection caps. Remove these caps only
immediately before connecting up the cables to the ports.
Standards
EN 60529:1991 degrees of protection due to enclosure (IP code) (IEC 60529)
EN 60529:1989 Degrees of protection provided by enclosures (IP code)
Further references
Klingberg, G.; Mähling, W.:
Schaltschrank- und Gehäuse-Klimatisierung in der Praxis mit EMV;
Heidelberg 1998
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