7 | Connection
STOBER
44
05/2019 | ID 442793.01
7.3.3
Housing grounding
You connect the grounding conductor to the drive controller over terminal X10.
Additional requirements for protective equipotential bonding apply in the event of ground leakage currents > 10 mA. At
least one of the following conditions must be fulfilled:
§
The grounding conductor must have a minimum cross-section of 10 mm² Cu over its overall length
§
If the grounding conductor has a cross-section of less than 10 mm², a 2nd grounding conductor must be provided with
a cross-section of at least the same size up to the point at which the grounding conductor exhibits the minimum cross-
section of 10 mm²
A grounding bolt is mounted to the devices for connecting the 2nd grounding conductor.
Note the tightening torque of 4.0 Nm.
Observe the order for assembly:
1
4
5
2
3
Fig. 10: Connection of the grounding conductor
1
M6 ground bolt
2
Contact disk
3
Cable lug
4
Washer
5
Nut
The contact disk, washer and nut are supplied with the drive controller.
Leakage currents > 10 mA can arise in normal operation. To fulfill DIN EN 61800-5-1 and EN 60204-1, connect the grounding
bolt with a copper conductor according to the following table:
Cross-section A
Power grid line
Minimum cross-section A
min
Grounding conductor at grounding bolt
A ≤ 2.5 mm²
2.5 mm²
2.5 < A ≤ 16 mm²
A
16 – 35 mm²
≥ 16 mm²
> 35 mm²
A/2
Tab. 41: Minimum cross-section of the grounding conductor
