
Openings with thread must have the following attributes:
● Conical thread: Without additional sealant or seals, not less than three and one half thread
turns.
● Cylindrical threads: At least five thread turns, tolerance of 6 H, even better according to
ISO 965-1. For less than five thread turns, an additional seal or sealant is required.
Drill holes in the cable entry plate
If you drill holes in the cable entry plate for explosion-protected motors, then document the data
about these holes in the motor documentation:
● Number and size of the holes
● Type of thread, e.g. metric or NPT
Data regarding the installation of pipes and accessories is provided in IEC / EN 60079-14.
6.6
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.
The thread size for the grounding conductor is 2x M12.
Type of enclosure grounding
Conductor cross-
section
mm²
Connection of an individual conductor under the ex‐
ternal grounding bracket
M12
150
Connection with DIN cable lug under the external
grounding bracket, DIN 46 234.
Electrical connection
6.6 Grounding conductor
1MB5 SH 400/450
Operating Instructions, 05/2019, A5E45959221A
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Содержание SIMOTICS XP 1MB5 SH400
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Страница 10: ...Table of contents 1MB5 SH 400 450 8 Operating Instructions 05 2019 A5E45959221A ...
Страница 64: ...Assembly 5 4 Aligning and fixing the machine 1MB5 SH 400 450 62 Operating Instructions 05 2019 A5E45959221A ...
Страница 106: ...Operation 8 8 Non operational periods 1MB5 SH 400 450 104 Operating Instructions 05 2019 A5E45959221A ...
Страница 154: ...Disposal 11 5 Disposal of components 1MB5 SH 400 450 152 Operating Instructions 05 2019 A5E45959221A ...
Страница 156: ...Service support 1MB5 SH 400 450 154 Operating Instructions 05 2019 A5E45959221A ...
Страница 160: ...Quality documents 1MB5 SH 400 450 158 Operating Instructions 05 2019 A5E45959221A ...
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Страница 166: ...Germany More information www siemens com drives Siemens AG Digital Industries Postfach 48 48 90026 NÜRNBERG ...