Siemens SIMATIC S7-400H System Manual page 253

Open installation, wall breakthroughs, cable ducts:
Note the points outlined below when you install fiber-optic cables:
● The fiber-optic cables may be installed in open locations, provided you can safely exclude
● Fiber-optic cables should be mounted on mounting rails (cable trays, wire mesh ducts)
● Always deburr or round the edges of the breakthrough before you install the fiber-optic
● The bending radii must not be smaller than the value specified in the manufacturer's data
● The branching radii of the cable ducts must correspond to the specified bending radius of
Cable pull-in
Note the points below when pulling-in fiber-optic cables:
● Always observe the information on pull forces in the data sheet of the corresponding
● Do not reel off any greater lengths when you pull in the cables.
● Install the fiber-optic cable directly from the cable drum wherever possible.
● Do not spool the fiber-optic cable sideways off the drum flange (risk of twisting).
● You should use a cable pulling sleeve to pull in the fiber-optic cable.
● Always observe the specified bending radii.
● Do not use any grease- or oil-based lubricants.
Pressure
Do not exert any pressure on the cable, for example, by the improper use of clamps (cable
quick-mount) or cable ties. Your installation should also prevent anyone from stepping onto
the cable.
Influence of heat
Fiber-optic cables are highly sensitive to direct heat, so the cables must not be worked on
using hot-air guns or gas burners as used in heat-shrink tubing technology.
S7-400H
System Manual, 09/2007, A5E00267695-03
any damage in those areas (vertical risers, connecting shafts, telecommunications
switchboard rooms, etc.).
using cable ties. Take care not to crush the cable when you fasten it (see Pressure).
cable, in order to prevent damage to the sheathing when you pull in and fasten the cable.
sheet.
the fiber-optic cable.
fiber-optic cable.
You may use the lubricants listed below to support the pulling-in of fiber-optic cables.
– Yellow compound (Wire-Pulling, lubricant from Klein Tools; 51000)
– Soft soap
– Dishwashing liquid
– Talcum powder
– Detergent
Synchronization modules
15.2 Installation of fiber-optic cables
253