HAUBER-Elektronik GmbH
14
13
Installation and commissioning
13.1
General notes
Installation and commissioning the vibration monitoring unit must be performed by an
authorised specialist who is familiar with the safety regulations when handling electrical
components.
Protect the connection cable and any extension cables from electrical
interference or mechanical damage. Comply with the local regulations and
directives.
The cable used for the supply connection shall be suitable for the
environmental condition.
13.2
Wiring diagram / earthing concept
Earth/ground loops are amongst the most common problems in measurement set-ups with
sensitive sensor technology. These issues arise due to unintentional differences in potential in
the electrical circuit between the sensor and evaluation unit.
Ensure that the earth connection is electrically secure.
According to the earthing concept, the cable shielding is electrically connected to the sensor
housing through the knurled nut and has earth potential at the evaluation unit. With greater
cable lengths it is favorable to disconnect the shielding from the evaluation unit (4) in order to
prevent compensating currents over the shielding.
Abb. 4: Standard earthing concept
1
Machine earth
2
Evaluation unit (measuring device, SPS, IO-
Link Master…)
3
Cable shield
4
Evaluation unit earth potential
