Siemens S5-135U/155U User Manual
Page 55
3-29
System Manual
C79000-G8576-C199-06
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 mm
2
of
copper).
Shield/Protective
Conductor Bar
< 7 V
CC
EU
IM 304
IM 314
Figure 3-13
Shielding and Grounding the Connecting Cable
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.
Special Features
Installation Guidelines