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 there is an grounding screw (see also chapter 3.1 Structure), via which the functional earth of the PC can be connected. Use cables with a cross-section of at least 4 mm2 to connect the protective conductor.
Protective earth
Establish the low-resistance protective earth of the Industrial PC via the voltage connection, thus avoiding dangerous contact voltages. There is a pin in the voltage socket for the protective earth (PE).
EMC
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Hardware damage due to electromagnetic interference Using the Industrial PC without functional earthing can lead to hardware damage due to electromagnetic interference.
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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.