Terminal Boxes, End Shields, Grounding Conductors, Sheet Metal Fan Covers; Terminal Boxes, End Shields, Ground Conductors; Connecting The Grounding Conductor; General Information On Connecting The Grounding Conductor - Siemens SIMOTICS A 1FU8 Operating Instructions Manual

Electrical connection

6.4 Connecting the grounding conductor

6.3.3

Terminal boxes, end shields, grounding conductors, sheet metal fan covers

6.3.3.1

Terminal boxes, end shields, ground conductors

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 ∅
Nm
Note
Tightening torque for the condensation drain plug
Tighten the condensation drain plug M6x0.75 with a torque between 1.5 and 2.0 Nm!
6.4 Connecting the grounding conductor
6.4.1

General information on 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.
60
M 3.5 M 4
min 0.8 2
max 1.2 3
M 5 M 6 M 8
3.5 6 16
5 9 24
Operating Instructions, 02/2016, 5 610 70000 02 000
M 10 M 12 M 16
28 46 110
42 70 165
M20
225
340
1FU8