Mounting
Grounding the device
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Shielding concept of the fieldbus level
On delivery, a grounding clip (1) is provided on the connectors for the fieldbus connection (P1,
P2).
In the case of direct mounting on a mounting plate, the shielding of the fieldbus cables is
routed directly to the module grounding via the ground clip and the metal screw in the lower
mounting hole. In the case of DIN rail mounting, the shielding of the fieldbus cables is connec-
ted to the module grounding by the metal screw. The metal screw is supplied with the TBNN-
S0-DRS connector.
If direct grounding of the fieldbus shield is not desired, the grounding clip (1) must be re-
moved. In this case, the fieldbus shield is connected to the module ground via an RC element.
6.5.3
Grounding the device – I/O and fieldbus level
The grounding of the fieldbus level can either be connected directly via the grounding clip (1)
or connected and routed indirectly via an RC element to the grounding of the I/O level. If the
fieldbus earthing is to be routed via an RC element, the grounding clip must be removed.
1
2
3
Fig. 17: Grounding clip (1)
Removing the grounding clip: Disconnect the direct grounding of the fieldbus level
Use a slim slotted screwdriver in order to lift up and remove the grounding clamp.
Fig. 18: Use a flat slotted screwdriver to push the grounding clip forwards and remove it.