Installing Network Components In Cabinets; Simatic Net Components - Siemens 6GK1 901-1GB01 System Manual

Installing network components in cabinets

3.1

SIMATIC NET components

Ventilation openings
The casings of most SIMATIC NET network components have ventilation openings. To allow
more effective cooling of the electronics components, ambient air can flow through the
casing. The maximum operating temperatures quoted in the technical specifications apply
only when there is unrestricted flow of air through the ventilation openings.
Depending on the size of the ventilation openings, such modules comply with degree of
protection IP 20, IP 30 to IP 40. You will find the precise degree of protection of a SIMATIC
NET component in its operating instructions.
Components with the degrees of protection mentioned above do not provide protection
against dust and water! If the installation site requires such protection, the components must
be installed in an additional enclosure such as a switching cubicle that provides the higher
degree of protection (for example IP65/ IP67).
If you install these components in an additional enclosure, make sure that the conditions
required for operation are maintained!
Heat dissipation
Make sure that the temperature inside the additional enclosure does not exceed the
permitted ambient temperature for the installed components. Select an enclosure with
adequate dimensions or use heat exchangers.
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
Passive network components
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