Measures for small system installations
For smaller installations with only slight potential differences, insulated mounting of the
device and of peripheral devices may be a sufficient solution.
U
System
Controller
Power Supply
SICK
Device
8
6
5
2
1
3
4
7
=
9
=
ß
Figure 15: Example: Prevention of equipotential bonding currents in the system configuration by
the insulated mounting of the device
1
System controller
2
Device
3
Voltage supply
4
Grounding point 3
5
Insulated mounting
6
Grounding point 2
7
Grounding potential difference
8
Grounding point 1
9
Metal housing
ß
Shielded electrical cable
Even in the event of large differences in the ground potential, ground loops are effec‐
tively prevented. As a result, equalizing currents can no longer flow via the cable shields
and metal housing.
NOTICE
The voltage supply for the device and the connected peripheral devices must also guar‐
antee the required level of insulation.
Under certain circumstances, a tangible potential can develop between the insulated
metal housings and the local ground potential.
6.3
Connection diagram
NOTE
The recommended connecting cables and their associated technical data can be found
online at:
6
ELECTRICAL INSTALLATION
32
O P E R A T I N G I N S T R U C T I O N S | LMS4000
8023198//2018-06-18 | SICK
Subject to change without notice