Passive components for optical networks
7.3 Glass FO cables
PROFIBUS Network Manual
System Manual, Edition 04/2009, C79000-G8976-C124-03
215
7.3.4 Flexible fiber optic trailing cable (62.5/125 μm)
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Figure 7-9 Structure of the flexible fiberoptic trailing cable
Flexible fiberoptic trailing cable 6XV1 820-6****
The flexible fiberoptic trailing cable contains two multimode graded index fibers 62.5/125 μm.
Integrated dummy elements produce a round cable crosssection.
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
4figure number make it easier to estimate the length of an installed cable.
Properties
The flexible fiberoptic trailing cable has the following properties:
● Flexible (100,000 bending cycles at a minimum bending radius of 150 mm)
● Not halogen free
● Available in meter lengths for up to 2000 m
● Available preassembled with 4 BFOC connectors in fixed lengths up to 650 m
Use
The flexible fiberoptic trailing cable was developed for applications in which the cable must
be flexible enough to move, for example when attached to moving machine parts (drag
chains). The cable is designed for 100,000 bending cycles through ±90° (at the specified
minimum bending radius). The trailing cable can be used both indoors and outdoors. It is
suitable for connecting optical interfaces operating in the wavelength range around 850 nm
and 1300 nm.
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