Marzhauser Sensotech SensorReady 3D Betriebsanleitung Seite 105

SensorReady 3D Technical Data
13.3.6 Shield: Insert Nut M3
On the insert nut M3 (shield), you can set the SensorReady 3D
to a specific potential (e.g. protective ground).
The port is not suitable for implementing a standards-compliant
PE connection.
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