Stober SI6A062 - CE-Compliant Housing Grounding; Fig. 27 Connection of the Grounding Conductor; Tab. 84 Minimum Cross-Section of the Grounding Conductor

STOBER 10 | Connection
02/2019 | ID 442728.05
107
10.3.6 CE-compliant housing grounding
Connect the grounding conductor to the supply module 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.
For correct housing ground, connect the 2nd grounding conductor to the grounding bolt of the
DL6B Quick DC-Link module of the supply module. The housing grounding connections for the
SI6 drive controllers in the group are connected to the grounding conductor circuit over the PE
rail of the Quick DC-Link modules.
Note the tightening torque of 4.0Nm.
Observe the order for assembly:
1
4
3
5
2
Fig.27: 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. 84: Minimum cross-section of the grounding conductor