Central Discharge Function for the PROFIBUS DP

Central Discharge Function

Each cable shield should be galvanically grounded with the earth using FE/PE grounding clamps immediately after the cable has been connected to the cabinet.

Static Discharge

In the case of a very long bus cable, which has been installed but not yet connected, you must discharge the static as follows:

Step	Action
1	Select the PROFIBUS DP connector closest to the FE/PE grounding clamp.
2	Touch the metal of the connector housing to the cabinet's FE/PE grounding clamp to carry out a static discharge.
3	Now connect the bus connector to the device.
4	Discharge the other PROFIBUS DP cable connectors as described in steps 2 and 3.

Note

NOTE: During mounting, the metal part of the PROFIBUS DP connector is connected internally to the cable shield. When the bus cable connector is inserted into the module’s PROFIBUS port, a short connection between the shield and the FE/PE is created automatically.