Selecting Fiber-Optic Cables - Siemens SIMATIC ET 200iSP Operating Instructions Manual

Network interface module

12.5 Selecting fiber-optic cables

• Have you organized a suitable intermediate on-site storage for the fiber-optic cables?
• Does the category of the cables match the connecting components?
Check the attenuation of the fiber-optic cables after installation.
Storage of the fiber-optic cables
if you do not install the fiber-optic cable immediately after you received the package, it is
advisable to store it in a dry location where it is protected from mechanical and thermal
influences. Observe the permitted storage temperatures specified in the data sheet of the fiber-
optic cable. You should not remove the fiber-optic cables from the original packaging until you
are going to install them.
NOTICE
Reduced optical performance due to dirt
Even slight amounts of dirt at the end of a fiber-optic cable will adversely affect its optical
performance and thus the quality of the signal transmission. This can lead to synchronization
losses during operation. Protect the ends of the fiber-optic cables against dirt during storing
and installation. If the ends of the fiber-optic cable are covered when delivered, do not remove
these covers.
Open installation, wall breakthroughs, cable ducts:
Note the points outlined below when you install fiber-optic cables:
• The fiber-optic cables can be installed openly if damage is excluded in these areas (riser
zones, connection shafts, telephone distribution rooms, etc.).
• Cables are fastened with cable ties to a mounting rail (cable tray, lattice cable duct), whereby
the fiber-optic cable must not be squeezed by the respective fastening.
• Always deburr or round the edges of the breakthrough before you install the fiber-optic cable,
in order to prevent damage to the sheathing when you pull in and fasten the cable.
12.5 Selecting fiber-optic cables
Check or make allowance for the following conditions and situations when selecting a suitable
fiber-optic cable:
• Required cable lengths
• Indoor or outdoor installation
• Any particular protection against mechanical stress required?
• Any particular protection against rodents required?
• Can an outside cable be routed directly underground?
• Does the fiber-optic cable need to be water-proof?
• Which temperatures influence the installed fiber-optic cable?
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Operating Instructions, 11/2022, A5E00247483-AK
ET 200iSP