Siemens SIMATIC NET PROFIBUS - Manual (Page 112)

Passive Components for RS-485 Networks
4-14
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Uses
Due to its additional PE outer sheath, this cable is suitable for underground cabling
(campus cabling).
4.1.7 FC Trailing Cable
Filler
Cores, stranded copper
Cellular PE insulation
PUR outer sheath
Copper braid shield
Aluminum foil
Plastic foil
Figure 4-7 Structure of the Trailing Cable
Trailing Cable 6XV1 830-3EH10
The trailing cable 6XV1 830-3EH10 corresponds to the specification EN 50170
Cable Type A, with stranded copper cores (approximately 24 gauge - 19/36) with
the exception of the higher loop resistance.
This difference means a reduced segment length; refer to the tables in Chapter 3
“Notes on Configuration”.
In contrast to the standard LAN cable, the cores of the trailing cable are of
stranded copper. In conjunction with the special combination of braid shield, foil
shield, and the sheath material of polyurethane, the cable is extremely flexible
while retaining highly constant electrical characteristics.
If you connect to screw terminals, the stranded cores must be fitted with wire-end
ferrules (0.25 mm
2 complying with DIN 46228).
The bus connector 6ES7 972-0BA30-0XA0 cannot be connected.
To help to avoid twisting the cable during installation, the outer sheath has a line
printed along its full length.
The structure of the cable allows the use of the FastConnect (FC) stripping tool for
fast stripping of the outer sheath (see Section 4.2.3).