Shielding Concept; Fig. 33 Shield Busbar - Beckhoff EL72 1 Series Documentation

Installation
5.6

Shielding concept

Together with the shield busbar, the prefabricated cables from Beckhoff Automation offer optimum protection
against electromagnetic interference.
It is highly recommended to apply the shield as close as possible to the terminal, in order to minimize
operational disturbances.
Connection of the motor cable to the shield busbar
Fasten the shield busbar supports 1 to the DIN rail 2. The mounting rail 2 must be in contact with the metallic
rear wall of the control cabinet over a wide area. Install the shield busbar 3 as shown below.
As an alternative, a shield busbar clamp 3a can be screwed directly to the metallic rear wall of the control
cabinet (fig. "shield busbar clamp")
Fig. 33: Shield busbar
42 Version: 3.3 EL72x1