Profibus Cable Specification

C

calvin smith

here is the cable spec from profibus.com
The PROFIBUS standard defines two variations of the bus cable. However it is recommended to use cable Type A in all new installations.

Type A is especially recommended for high transmission speeds (>500 kBaud) and permits doubling of the network distance in comparison to Type B.

Technical specification:

Impedance: 35 up to 165 Ohm at frequencies from 3 to 20 Mhz.

Cable capacity: < 30 pF per meter.

Core diameter: > 0,34 mm2, corresponds to AWG 22.

Cable type: twisted pair cable. 1x2 or 2x2 or 1x4 lines.

Resistance: < 110 Ohm per km.

Signal attenuation: max. 9 dB over total length of line section.

Shielding: CU shielding braid or shielding braid and shielding foil

Max. Bus length: 200 m at 1500 kbit/s, up to 1,2 km at 93,75 kbit/s. Extendable by repeaters.

hope this helps

calvin smith
[email protected]
 
The PROFIBUS standard defines two variations of the bus cable. However it is recommended to use cable Type A in all new installations.

Type A is especially recommended for high transmission speeds (>500 kBaud) and permits doubling of the network distance in comparison to Type B.

Technical specification:
Impedance: 35 up to 165 Ohm at frequencies from 3 to 20 Mhz.
Cable capacity: < 30 pF per meter.
Core diameter: > 0,34 mm2, corresponds to AWG 22.
Cable type: twisted pair cable. 1x2 or 2x2 or 1x4 lines.
Resistance: < 110 Ohm per km.
Signal attenuation: max. 9 dB over total length of line section.
Shielding: CU shielding braid or shielding braid and shielding foil
Max. Bus length: 200 m at 1500 kbit/s, up to 1,2 km at 93,75 kbit/s. Extendable by repeaters.

For more information see http://www.profibus.com/support.html

Regards
Pär
 
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