Functional earth (FE)
Functional earth via the mounting holes
The mounting holes also serve as connections for the functional earth (FE).
Make sure that the box is grounded with low impedance via both fastening screws.
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Functional earth via the supply lines
The pins of connections X1 and X2 labeled “FE” are connected directly to the functional earth potential of the mounting holes.
Connect the functional earth of the "FE" cores in accordance with the following instructions:
- If possible, connect two devices with a pre-assembled cable. Possible types of pre-assembled cables can be found in the chapter Accessories.
- Otherwise: ground the "FE" core with low impedance as near as possible to the remote station.