2 Safety Instructions
Rev. 03/2019 13
2.3 Information on Electric Isolation
If ground and earth potential are not properly isolated, the following problems as well as others
can occur:
– Electromagnetic interferences (e.g. ground loops)
– Signal corruption (e.g. of the analog voltage signal)
– Unwanted leakage currents
Therefore, earth potential and the negative pole of the power supply of all devices in the electric
assembly that provide the option, should be connected separately. If possible, the negative pole
of the power supply should only be connected to earth potential at one point in the entire
system.
Wiring Example
Device with
shielded wires
Device featuring
protection class II
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