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Does the shield have to be applied over a large area on the PROFINET cable leaving the control cabinet?
According to the current state of the art, a large-area application of the shield is no longer necessary. The user organisation PROFIBUS & PROFINET International (PI) has now published an official guideline on the subject of "Earthing and shielding of PROFIBUS and PROFINET". In this guideline, an additional shielding layer (in addition to the one provided by the device) is only prescribed at the entry/exit if the corresponding device does not earth the cable shield via the device. In this case, the shield must be contacted in another way before the device.
More information on the guideline "Grounding and shielding of PROFIBUS and PROFINET" can be found » HERE. We would also be happy to advise you on how to implement the recommended action in your industrial network.
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