Siemens SIMATIC NET PROFIBUS Instrukcja Użytkownika Pobierz pdf (Strona 10)

10

PROFIBUS

Fiber-optic cables

The optical PROFIBUS network is

configured with fiber-optic cables

(FOs).

Fiber-optic cables are available in

plastic, PCF or glass fiber:

Glass fiber-optic cables

Two-wire cable for optical PROFIBUS

networks in indoor and outdoor installa-

tions:

· FO standard cable

FO for indoor and outdoor installation.

· FO trailing cable

Fiber-optic cables for special appli-

cation in forced movement guidance

e.g. continuously moving machine

parts (track chain application)

indoors and outdoors.

· FO indoor cable

Halogen-free, tread-resistant and

flame retardant fiber optic cable for

use in buildings.

Plastic FO cable

Duplex or standard cables for indoor

applications:

· Plastic FO, duplex core

Flat duplex core with single PVC

casing for indoor applications with

low mechanical stress, such as labo-

ratory installations or in cabinets.

Cable lengths up to 50 m.

· Plastic FO, standard cable

Rugged round cable with violet PVC

outer casing and kevlar strain ele-

ments, as well as two plastic fibers

with a rugged polyamide inner

casing. For indoor applications with

cable lengths up to 80 m.

PCF FO cables

Standard cable for indoor applications

· PCF FO cable,

1)

standard cable

Rugged round cable with violet PVC

outer casing and kevlar strain ele-

ments for indoor applications with

cable lengths up to 400 m.

1) Polymer Cladded Fiber,

also known as HCS

®

FO cable.

HCS

®

is a registered trademark of Lucent

Technologies

Shipboard duplex FO

Halogen-free, tread-resistant, flame

retardant, shipboard approved

fiber-optic cable for laying on board

ships and offshore units in enclosed

areas and on open decks.

Fiber-optic cables offer the following

advantages:

· Rugged design for industrial indoor

and outdoor applications

· Halogen-free version for use in

buildings

· Trailing cable for special application

in forced movement

· High immunity to interference

because of insensitivity to electro-

magnetic fields

· Available precut/preassembled

· Protection of transmission line

against electromagnetic interference

· Secure against unauthorized listen-

ing, due to lack of radiation from the

cable.

Figure 13: Fiber-optic cable configuration

Outer sheath

Kevlar yarn

Support elements

Filled hollow strand with glass fiber

Strand sheath

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 23 24

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