Siemens SIMATIC NET PROFIBUS - Manual (Page 215)

Passive Components for Electrical Networks
7-19
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
7.3.3 Flexible Fiber-Optic Trailing Cable
Outer jacket
Inner jacket
Support element
Aramid yarn
Glass fiber G 62.5/125
µ
m
Aramid yarn
Dummy element
Fleece/strands
Figure 7-6 Structure of the Flexible Fiber-Optic Trailing Cable
Flexible Fiber-Optic Trailing Cable 6XV1820-6****
The flexible fiber-optic trailing cable contains two multimode graded fibers 62.5/125
µ
m. Integrated dummy elements produce a round cross-section.
The outer jacket is labeled “SIEMENS SIMATIC NET FLEXIBLE FIBER OPTIC
6XV1 820-6AH10” at intervals of approximately 50 cm. Meter markers consisting of
a vertical line and a 4-figure number make it easier to estimate the length of an
installed cable.
Properties
The flexible fiber-optic trailing cable has the following properties:
S
Highly flexible (100,000 bending cycles at a minimum bending radius of 150
mm)
S
Not halogen free
S
Available in meter lengths for up to 2000 m
S Available preassembled with 4 BFOC connectors in fixed lengths up to 650 m