Lenze · Controller-based Automation · PROFIBUS® Communication Manual · DMS 4.6 EN · 11/2016 · TD17 25
5Technical data
5.2 Bus cable specification
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5.2 Bus cable specification
PROFIBUS cables with an integrated bus terminating resistor can be obtained from various cable
manufacturers.
Bus cable length
The bus cable length depends on the baud rate used:
Note!
Only use cables that comply with the specifications of the PROFIBUS user organisation.
Range Values
Cable resistance 135 ... 165 /km, (f = 3 ... 20 MHz)
Capacitance per unit length 30 nF/km
Loop resistance < 110 /km
Core diameter > 0.64 mm
Core cross-section > 0.34 mm
2
Cores Twisted in pairs, insulated and shielded
Baud rate Length
9.6 ... 93.75 kbps 1200 m
187.5 kbps 1000 m
500 kbps 400 m
1500 kbps 200 m
3000 ... 12000 kbps 100 m
Note!
The baud rate depending on the data volume, cycle time and number of stations should
only be selected as high as required for the application.
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