2.4 Protection data interfaces and communication topology (optional)
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7SA522 Manual
C53000-G1176-C155-3
Table 2-5 Communication via direct connection
If a communication converter is used, the device and the communication converter are
linked with a FO5 module via optical fibres. The converter itself is equipped with dif-
ferent interfaces for the connection to the communication network. For ordering infor-
mation see Appendix, Subsection Accessories.
Figure 2-44 Examples for communication connections
Note
The redundancy of different communication connections (for ring topology) requires a
consequent separation of the devices connected to the communication network. For
example, different communication routes should not be conducted via the same mul-
tiplexer card, as there is no alternative which could be used if the multiplexer card
should fail.
Module
in the
device
Connector
type
Fibre type Optical
Wavelength
Perm. path
attenuation
Maximum length
Optical Fibre
FO5 ST Multimode
62.5/125 µm
820 nm 8 dB 1.5 km / 0.95 miles
FO6 ST Multimode
62.5/125 µm
820 nm 16 dB 3.5 km / 2.2 miles
FO7 ST Monomode
9/125 µm
1300 nm 7 dB 10 km / 6.25 miles
FO8 FC Monomode
9/125 µm
1300 nm 18 dB 35 km / 22 miles
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