Siemens SIMATIC NET PROFIBUS manual Properties

Passive Components for RS-485 Networks

Properties

The characteristics of the flexible cable differ from those of the standard LAN cable as follows:

SThe sheath material is free of halogens (polyurethane, PUR)

SExtremely good resistance to abrasion

SResistant to mineral oils and grease

SExtremely good resistance to UV radiation

SSmall bending radii for installation and operation

SDue to the smaller Cu cross-section, the d.c. loop resistance and the HF attenuation are higher which means reduced segment lengths.

SThe sheath material is flame resistant

Uses

The flexible cable is designed for torsion of ± 180o and is therefore particularly suitable for networking moving plant parts, for example robots.

Note

If you connect to screw terminals, the stranded cores must be fitted with wire-end ferrules (0.25 mm2 complying with DIN 46228). Use only wire-end ferrules made of materials with permanently stable contact properties, for example copper with a tin-plated surface (not aluminum).

The bus connector 6ES7 972-0BA30-0XA0 cannot be connected to the stranded cores.

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	6GK1970-5CA20-0AA1 Release 2 05/2000