Synchronization modules
14.3 Selecting fiber-optic cables
CPU 410 Process Automation/CPU 410 SMART
248 System Manual, 05/2017, A5E31622160-AC
Table 14- 3 Specification of fiber-optic cables for outdoor applications
A cable junction is required
between the indoor and out-
door area
see Figure 12-2
• Installation cables for
outdoor applications
Installation cables for outdoor applications
• 1 cable with 4 cores per fault-tolerant system
Both interfaces in one cable
• 1 or 2 cables with several shared cores
Separate installation of the interfaces in order to
increase availability (reduction of common cause
factor)
• Connector type ST or SC, for example, to match
other components; see below
Further specifications you may need to observe for
your plant:
• UL approval
• Halogen-free materials
Further specifications you may need to observe for
your plant:
• Protection against increased mechanical stress
• Protection against rodents
• Water-proofing
• Suitable for direct underground installation
• Suitable for the given temperature ranges
Avoid splicing cables in the field. Use prefabricated
cables with pulling protection/aids in whiplash design,
• including patch cables for
indoor applications as required
• 1 cable with 4 cores per fault-tolerant system
Both interfaces in one cable
• 1 or 2 cables with several shared cores
Separate installation of the interfaces in order to
increase availability (reduction of common cause
factor)
• Connector type ST or SC, for example, to match
other components; see below
Further specifications you may need to observe for
your plant:
• UL approval
• Halogen-free materials
Avoid splicing cables in the field. Use prefabricated
cables with pulling protection/aids in whiplash or
breakout design, including measuring log.
• Patch cable for indoor applica-
tions
• Connector type LC on ST or SC, for example, to
match other components
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