Hardware Manual

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-22

Saia-Burgess Controls AG

Mounting

CPUs and expansion housings

3

3.5 Mounting

The PCD1 and PCD2 can be snapped onto two 35 mm top-hat rails (DIN 50 022).

The PCD1/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.

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







Mounting the PCD1/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 holder; 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 of 40 °C should not be exceeded.