Grounding of the machine beds

The ground connection must be made with the largest possible cross-section, with a low impedance, over a large area and via a short connection to large conductive fastenings. Beckhoff recommends the use of wide connections with large contact surfaces. Wide earth straps are suitable for this. The table below illustrates typical suitable connectors:

Make sure that an optimally conductive connection is available at the connection point for the protective conductor. To ensure this, carefully remove paint, dirt, corrosion and all insulating components. Use galvanized stud bolts and washers.