Perle Systems RIO 5500036-17 - Manual (Page 221)

RIO Remote I/O System User Guide
Fibre optic link (FOLK) cable specifications
Page 221
Chapter 3 RIO Cabling information
Fibre optic link (FOLK) cable specifications
You use can a Fibre optic link (FOLK) cable in place of a normal RIO link cable with the RIO
system when you want to make long distance connections up to 1 kilometre. This approach
is especially useful in a high noise environment such as a machine shop where
electromagnetic interference is a problem.
Perle does not supply fibre optic cables for this product. All Fibre-optic cable must conform to
the following specification;
Note
When using fibre cables all manufacturers installation advice and specifications should
be followed.
Item Specification
Fibre type 62.5 μm or 125 μm multimode silica graded index fibre
(= 62.5μm core diameter, 125 μm cladding inside 250
μm buffer).
Cable type Tight buffered or jacketed.
Fibres Duplex, 4 core, or similar, as required by installation
(2 fibres are used by each fibre-optic link).
Each core sub-jacketed, individually coloured.
Connectors ST-type connector.
Strength member Aramid strength suitable for installation procedure.
Numerical aperture 0.27 - 0.3 (0.275 will be typical of most fibres)
Attenuation 6db/km maximum at 820nm (4db will be typical of most
fibres)
Cable Jacketing General Normal indoor cable requires installation in conduit or
cable trays. In other situations, crush-resistant cables
may be required to withstand handling and environment.
Smoke vulnerable applications Low Smoke Zero Halogen (LSOH) cable.
Underground applications Steel wire armouring, steel wire braid or corrugated tube
cable.
Moisture vulnerable
applications Cable with a metal (aluminium) foil layer and petroleum
jelly moisture barrier.
Aerial (pole) applications Non-metallic, self-supporting cable.