Installing the PSSu system
Installation Manual PSSuniversal
21262-EN-07
21
4.4
Installation environment
The PSSu system must be installed in a protected environment, e.g. in a control cabinet or
a protected interior compartment. The interior compartment must provide protection against
environmental influences such as dust and humidity, as well as mechanical damage and
manipulation. Please refer to the relevant standards for details of the conditions that must
be met for the application.
Use a zinc-plated DIN rail as the mounting rail. Dimensions:
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35 x 7.5 mm or 35 x 15 mm
When installing, please note the following:
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Where vibration and shock stress place increased requirements on the system fasten-
ings, we recommend that the mounting rail is screwed to the mounting plate approxim-
ately every 200 mm.
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We strongly recommend that you comply with the mounting distances stated in the
chapter entitled
Mounting distances [
22]
. This will enable modules to be ex-
changed and guarantee sufficient heat dissipation.
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We recommend that it is installed horizontally on a vertical wall.
}
If you wish to install the system vertically, optimum upward heat dissipation is no longer
guaranteed. Please note the following restrictions:
– Reduce the maximum ambient temperature by 10°C compared with the values
stated in the technical data.
– Install the head module downwards.
– You should use additional metallic end brackets in order to comply with the higher
requirements on the system fastenings due to vibration and shock stress.
The T-type PSSu modules are suitable for use where there are increased environmental re-
quirements on temperature and humidity. Please refer to the technical details. With some
T-type output modules, please also note the derating at higher temperatures.