HAUBER-Elektronik GmbH
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14.2.2
Alternative earthing concept
With the alternative earthing concept, the sensor cable shield is connected to the sensor hous-
ing. The sensor housing is uncoupled from the machine earth by means of an EMC adapter
(red). With the alternative earthing concept, an electrically secure earth connection can only be
ensured for versions with an M12 plug connection. For versions with an integrated cable, the al-
ternative earthing concept cannot be used.
1
Machine earth
2
Evaluation unit (measuring device, PLC, etc.)
3
Blue
– 4–20 mA current signal
4
Brown
– 10–30 V DC
5
Cable shield
6
Evaluation unit earth potential
7
EMC adapter (Hauber art. no. 10473)
Please advise us if you are opting for the alternative earthing concept when
enquiring. We will offer you the relevant sensor cable and the EMC adapter.
14.2.3
Potentially explosive atmosphere, Ex i earthing concept
For the Ex i sensor, the shield is routed via Pin 5 of the plug connection to the potential of the
sensor housing, which is typically on the machine earth.
