Fig. 30 Grounding Bolt For Functional Earthing - Beckhoff CP37 1600 Series Manual

• an insulation fault may occur.
Establish low-resistance protective earthing of the panel PC via the voltage connection to avoid dangerous
touch voltages. There is a pin in the voltage socket for the protective earth (PE).
EMC
Hardware damage due to electromagnetic interference
The use of the panel PC without a functional earth can lead to material damage due to electromagnetic
interference.
• Only use the device with functional earth.
Electromagnetic compatibility (EMC) of the panel 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.
To do this, the panel PC must comply with certain protection requirements. The panel 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 via the
connection of the grounding bolt in the connection section of the panel PC (see Fig. 30). Use cables with a
minimum cross-section of 4 mm
Fig. 30: Grounding bolt for functional earthing
For information on how to access the connection compartment, refer to chapter 3.2 Interface description
[} 12].
Another grounding bolt is located inside the mounting arm adapter (see Fig. 31). You must establish a low-
resistance connection via this bolt.
CP37xx-1600
NOTICE
2
for the ground connection.
Version: 1.9
Commissioning
35