PROFIBUS grounding?

Field Network Q&A

I noticed something interesting that puzzles me. Why do the PROFIBUS network cables have no signal ground wires?

Expert’s answer: Is PROFIBUS grounding possible?

Is PROFIBUS grounding possible, you ask? PROFIBUS International (PI) claims that omitting the ground wires makes handling the cables easier. However, the association does suggest isolating the interface circuit from the local ground for safety, which may make that handling a little more difficult. Your mileage may vary, as always.

Courtesy of

So, PI offers a document with all its recommendations for installing, grounding and shielding its cables. So you should refer to it when you have a question about PROFIBUS installation. You can also contact PROFIBUS suppliers to talk to their experts about your projects and network auditions.

The following links have more about PROFIBUS:

Other resources that might interest you

Does PROFIBUS PA have advantages? Can you implement every device in the PROFIBUS DP network?

PROFIBUS Class 1 and Class 2 masters!
Is there a difference between a Class 1 and a Class 2 master on a PROFIBUS network?

Related tags: ABB Endress+Hauser grounding Installation Installation requirements MTL Pepperl+Fuchs Profibus PROFIBUS association Profibus DP project
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