Synchronization modules
14.3 Selecting fiber-optic cables
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
245
Cable pull-in
Note the points below when pulling-in fiber-optic cables:
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Always observe the information on pull forces in the data sheet of the corresponding
fiber-optic cable.
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Do not reel off any greater lengths when you pull in the cables.
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Install the fiber-optic cable directly from the cable drum wherever possible.
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Do not spool the fiber-optic cable sideways off the drum flange (risk of twisting).
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You should use a cable pulling sleeve to pull in the fiber-optic cable.
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Always observe the specified bending radii.
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Do not use any grease or oil-based lubricants.
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
Pressure
Do not exert any pressure on the cable, for example, by the inappropriate 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, which means the cables must not be
worked on using hot-air guns or gas burners as used in heat-shrink tubing technology.
14.3
Selecting fiber-optic cables
Check or make allowance for the following conditions and situations when selecting a
suitable fiber-optic cable:
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Required cable lengths
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Indoor or outdoor installation
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Any particular protection against mechanical stress required?
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Any particular protection against rodents required?
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Can an outside cable be routed directly underground?
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Does the fiber-optic cable need to be water-proof?
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Which temperatures influence the installed fiber-optic cable?