Siemens S5-135U/155U appendix Shielding and Grounding the Connecting Cable

Models: S5-135U/155U

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Installation Guidelines

With distributed interfacing (IM 304/IM 314 and IM 301/IM 310), ensure that the VDE specifications for laying the protective ground are complied with; distributed interfacing is non-floating.

The measures described above are shown in the following figure. If the permissible potential difference between ground points can be exceeded, you must install an equipotential bonding conductor (cross-section w 16 mm2 of copper).

CC

IM 304

EU

IM 314

Shield/Protective

Conductor Bar

< 7 V

Figure 3-13 Shielding and Grounding the Connecting Cable

Special Features With distributed interfacing, you must use the prefabricated connecting cables. You may have excess lengths of up to 100 m when installing the connecting cable. These excess lengths must be bifilar-wound and deposited at a point which is protected from electromagnetic interference.

System Manual

3-29

C79000-G8576-C199-06

Page 55
Image 55
Siemens S5-135U/155U appendix Shielding and Grounding the Connecting Cable