Product specifications

Appendix F Environmental Data Installation Requirements
3BSE036351-510 A 437
Installation Requirements
Installation regulations for all products are included in relevant product
documentation. Some general installation rules and applications are given below.
Laying Field Cables
There are no special requirements for laying field and communication cables
connected to products. However:
Cables for short-distance communication without modems should always be routed
at a distance of 10 cm (4 in.) from other cables.
All product-connected cables should be routed at a distance of 30 cm (12 in.) from
non-product power cables (heavy current cables) and 10 cm (4 in.) from class 4
cables of relevant international immunity standards.
Types of Field Cable
Shielded cables are always necessary for:
• Communications (see product documentation for cable type)
• High-frequency pulse transmission (see product documentation for cable type)
• Low-level analog signals, for example Pt100 and thermocouples
For other applications unshielded cables may be used. Digital and analog signals of
the same type can be run on the same cable.
Signal and return conductors should be located on the same cable.
DIN-Rail Mounting
It is required that the DIN-rail is properly attached to either the prefabricated
aluminum profile or a metal sheet with conductive surface. The fulfilment of this
requirement will ensure mechanical stability and enable a stable and well defined
ground plane for the chassis, which is of great importance from EMC perspective.