Grounding And Shielding - Pepperl+Fuchs FieldConnex F2D0-MIO-Ex12.FF Series Manual

Multi-Input/Output Device
Installation and Commissioning
Note!
Careful when tightening cap nuts!
The cap nuts must be securely tightened. Tightening the cap nuts too much or not enough
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both can affect the degree of protection.
The tightening torques of cap nuts vary, depending on the cable type used. For exact
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details refer to the documentation of your cable manufacturer.
3.2.3

Grounding and Shielding

Equipotential Bonding of Devices in F2* Metal Housings
For electronic components in F2* metal housings in hazardous areas, suitable equipotential
bonding in accordance with IEC/EN 60079 is required. Therefore, the device is designed as
follows:
The shield (terminal S) of the intrinsically safe fieldbus trunk is internally connected to the
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F2* metal housing.
The housing has a grounding point with a grounding screw. The grounding connection
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must be secured against loosening and corrosion, e. g., by using tinned cable plates.
Note!
Ensure potential equalization of F2 Metal Housings
Ensure that the housing is connected properly to the potential equalization.
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