Siemens EF 83H Series Manual do Utilizador descarregar pdf (Página 44)

Connecting the Network

3-6

SIMATIC 505 PROFIBUS-FMS CP User Manual

Cable Routing (continued)

For

in-ceiling routing, cables are usually supported in troughs or with hooks

and clamps every 10 to 15 feet (3 to 4.5 m).

Some advantages of in-ceiling routing are listed below

• Flexibility

•

Low-cost installation

•

Accessibility of cabling

Some disadvantages of in-ceiling routing are listed below

•

Collection of dust and other debris in ceilings

•

Hazardous working conditions in ceilings

•

Impracticality for buildings without drop ceilings

Surface duct routing is usually installed along baseboards or attached to

walls at desktop height. While surface duct routing protects cables from

both physical and electro-magnetic effects, it usually requires I/O bases to

be positioned near a wall.

NOTE:

Consult your cable vendor for proper cable-pulling techniques so that

no kinks occur in the cable during installation.

In-Ceiling Routing

Sur

face Duct

Routing

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Siemens EF 83H Series Manual do Utilizador Página 44