Synchronization modules
12.3 Selecting fiber-optic cables
CPU 410-5H Process Automation
212
System Manual, 09/2014, A5E31622160-AB
Table 12- 3 Specification of fiber-optic cables for outdoor applications
Cabling
Components required
Specification
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 measuring log.
•
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