Siemens SIMATIC NET PROFIBUS Installation Guidelines, Use of the Profibus Cable for Festoons

Passive Components for RS-485 Networks

Installation Guidelines

When it is installed, the cable must be unwound at a tangent from the drum and with no torsion (keep watching the line down the length of the cable) and installed in the cable carriage.

The cable must be installed in a flat cable carriage on a round support to avoid kinking. The radius of the round support must be greater than 70 mm.

The strain relief mechanisms on the cable carriage must have rubber clamps to avoid crimping the cable.

Other cables installed in the festoon must not cause bends tighter than the minimum bending radius of the trailing cable.

Figure 4-11 Use of the PROFIBUS Cable for Festoons

PROFIBUS Networks SIMATIC NET	4-21
6GK1970-5CA20-0AA1 Release 2 05/2000