Siemens SIMATIC NET PROFIBUS manual Special Cables, Fiber Types, Cable Structures

Passive Components for Electrical Networks

7.3.5Special Cables

Special Cables

In addition to the SIMATIC NET standard fiber-optic cables described in the Catalog IK 10, numerous special cables and accessories are also available. Listing all the versions available is beyond the scope of the catalog and of this manual.

The technical specifications of the SIMATIC NET bus components indicate which SIMATIC NET fiber-optic cable is the normal connecting cable and which other fiber types are suitable.

Note

Remember that the distances that can be covered differ if you use fibers with other core diameters or attenuation characteristics than those listed in the operating instructions.

Fiber Types

In addition to the standard SIMATIC NET fiber types, the following fiber types are often used:

S50 ∝ m Fiber

This fiber is used particularly in Europe in Telecom applications instead of the 62.5 ∝ m fiber. The smaller core diameter means that less power can be coupled into the fiber and reduces the distance that can be covered.

S10 ∝ m Fiber

This single-mode fiber is used for transmission over extremely long distances. The use of this single-mode fiber requires special, high-quality transmitter and receiver elements and connectors. In conjunction with OLM/G11-1300 or OLM/G12-1300, distances up to 15 km can be spanned.

Cable Structures

For special applications, numerous variations in the cable structure are available, for example:

SBundled cords (cables with hollow cords capable of accommodating several fibers)

SCables with rodent protection for underground installation

SHalogen-free cables, for example for use in underground train systems

SHybrid cable with fibers and copper conductors in one jacket

SCertified cables, for example for use on ships

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