Beckhoff AX8000 Series Operating Instructions Manual page 65

Protective earth
9.3.2
+ DC
- DC
1
+ DC
- DC
1
2
2
3
5
4
Version: 1.1
9.3.2
The protective earth is established via the left-hand earthing bolt on
the power supply module and the mounting plate on the control cab-
inet. The connection is made via a cable with a ring-shaped cable
lug and spring washer 1. Use a cable with a cross-section of at least
2
10 mm for a protective conductor.
Optionally, an additional protective earth can be attached via the
right-hand earthing bolt of the last module.
► Make up a cable with a ring-shaped cable lug and a cross-sec-
tion of at least 10 mm²
► Plug the cable with the cable lug 1 onto the left-hand earthing
bolt 2 of the first module in the drive system
► Place nut 3 on the earthing bolt 2 on top of the cable lug 4 and
screw it tight
► Do not use a spring washer 5
► Observe tightening torques:
Components
Hexagonal nut with serration
► Attach the assembled cable properly to the control cabinet
mounting plate. Clean the contact surfaces prior to the assembly
and ensure that the mounting plate is not painted.
AX8000
Electrical installation
Tightening torque [Nm]
2.3
─── 65