Commissioning • Grounding concept
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Automation PC 510 User's Manual V 1.01
3 Grounding concept
Functional ground is a current path of low impedance between electrical circuits and ground. It is used, for example,
to improve immunity to disturbances and not necessarily as a protective measure. It therefore serves only to deflect
disturbances, not to provide any kind of protection against electric shock.
The functional ground on the device has 2 connections:
•
Supply voltage
•
Ground connection
To guarantee secure dissipation of electric disturbances, the following points should be observed:
•
The device should be connected to the central grounding point in the control cabinet using the shortest
route possible.
•
Use a cable with a minimum cross section of 2.5 mm² per connection.
•
Note the line shielding concept, all connected data cables are used as shielded lines.
Control cabinet
Grounding strip
Supply voltage
Ground connection
min. 2.5mm²
min. 2.5mm²
Image 20: Grounding concept
