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6.3.2
Cable glands
Note
Avoid damaging the cable jacket.
Adapt the tightening torques to the cable jacket materials.
You should refer to the table in order to find the correct tightening torque for any metal and plastic cable glands that are to
be mounted directly on the machine, as well as for any other screw-type connections (such as adapters).
Table 6-3
Tightening torques for cable glands
M 12 x 1.5
M 16 x 1.5
M 20 x 1.5
M 25 x 1.5
M 32 x 1.5
M 40 x 1.5
M 50 x 1.5
M 63 x 1.5
If no other tightening torques are specified, then the values in the following table apply.
Table 6-4
Tightening torques for screws on the terminal box, end shields, screw-type grounding conductor connections
Thread ∅
M 3.5
Nm
min
max
6.4
Connecting the grounding conductor
The machine's grounding conductor cross-section must comply with EN / IEC 60034-1.
Please also observe installation regulations such as those specified in EN / IEC 60204-1.
Basically, there are two ways of connecting a grounding conductor to the machine.
● Internal grounding with a connection in terminal box at the location intended for this purpose and marked accordingly.
● External grounding with connection at the stator housing at the locations intended for this purpose and marked
accordingly.
Enclosure grounding method
Connection of an individual conductor under the external
grounding bracket.
Connection is made using a DIN cable lug under the external
grounding bracket. DIN 46 234
20
Metal
± 10 %
Nm
8
10
12
18
20
M 4
M 5
0.8
2
3.5
1.2
3
5
Plastic
Clamping range [mm]
± 10 %
Nm
1.5
2
4
6
M 6
M 8
6
16
9
24
Standard
-30 °C ... 100 °C
3.0 ... 7.0
4.5 ... 10.0
7.0 ... 13.0
9.0 ... 17.0
11.0 ... 21.0
19.0 ... 28.0
26.0 ... 35.0
34.0 ... 45.0
M 10
M 12
28
46
42
70
O ring
Cord dia.
mm
2
M 16
M20
110
225
165
340
Conductor cross-
section
mm²
... 10
... 25
1LE7
A5E36065207, 04/2018
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