Siemens simatic ET 200SP User Manual page 29

Mounting rail
The CPU 1515SP PC is mounted on a mounting rail according to EN 60715 (35 × 7.5 mm or
35 × 15 mm).
The mounting rail must be grounded separately in the control cabinet. Exception: If you
install the rail on grounded, zinc-plated mounting plates, there is no need to ground the rail
separately.
Note
If the ET 200SP distributed I/O system is exposed to vibration and shock loads, both ends of
the ET 200SP system assembly must be mechanically fixed to the mounting rail (e.g using
8WA1010-1PH01 ground terminals). This measure prevents the ET 200SP from shifting to
the side.
Note
If the ET 200SP distributed I/O system is exposed to high vibration and shock load, we
recommend that you screw the mounting rail to the mounting surface at intervals of approx.
200 mm.
Suitable surface finishes are:
● Steel strip in accordance with Appendix A of EN 60715 or
● Tinned steel strip. We recommend the use of the mounting rails in section
Accessories/spare parts (Page 103).
Note
Mounting rails of other manufacturers
If you use mounting rails from other manufacturers, ensure that they have the properties
required for your climatic and mechanical ambient conditions.
Check whether the mounting rails meet the requirements for a protective conductor.
CPU 1515SP PC
Manual, 12/2014, A5E32701806-AA
Installing
4.1 Basics
29