Grounding of the Industrial PC
Potential differences are minimized and electrical currents are diverted to the ground through grounding or potential equalization of electronic devices. This is to prevent dangerous touch voltages and electromagnetic interference.
At the lower end of the Industrial PC mounting plate is the protective connector PE (see also chapter 3.1 Structure), via which both the protective earth of the PC and the functional earth can be connected. Therefore, use cables with a cross-section of at least 4 mm2 for the connection of the protective conductor.
Protective earth
By connecting the PE protective conductor connection to the central grounding point of the control cabinet panel in which the PC is installed, you establish low-resistance protective earthing of the Industrial PC and thus avoid dangerous touch voltages.
EMC
Notice | |
Hardware damage due to electromagnetic interference Using the Industrial PC without functional earthing can lead to hardware damage due to electromagnetic interference.
|
Electromagnetic compatibility (EMC) of the industrial PC includes on the one hand not affecting other devices and equipment by electromagnetic interference and on the other hand not being disturbed by electrical or electromagnetic effects itself.
For this purpose, the Industrial PC must comply with certain protection requirements. The Industrial PC has EMC interference immunity according to EN 61000-6-2. The EMC interference emission of the device meets the requirements of EN 61000-6-4.
The functional earth is necessary for the EMC of the device. The functional earth is established by connecting the grounding point on the PC mounting plate to the central grounding point of the control cabinet in which the PC is installed.