Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Mounting
PCD2.M5_ Classic CPUs and expansion housings
3-18
3
3.5
Mounting
The PCD2 can be snapped onto two top-hat rails (2 x 35 mm). The PCD2 can also
be screwed to any other flat surface with 4 M4 screws; the grooves provided for this
purpose can be accessed by lifting off the snap-on cover.
Mounting the PCD2 on the top-hat rail
Press bottom of housing onto the mounting surface
Press upwards against the top-hat rail
Press top of housing against the mounting surface and snap into
place
Push the housing down onto the top-hat rail to ensure that it is
secure
Removal
To remove the housing, push upwards and pull out.
3.5.1 Mounting position and ambient temperature
A vertical surface is normally used to mount the module carrier; the I/O connections
to the modules then also run vertically. In this mounting position, the ambient
temperature may be from 0 °C to 55°C. In all
other positions, air convection works
less well, and an ambient temperature von 40 °C should not be exceeded
.