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Electrical connection
6.5 Inserting and routing the cables
Insert the cable into the terminal box
Proceed as follows when introducing cables into the terminal box:
1. Unscrew the cable entry plate.
2. Drill the required number of holes or threads in the required size in the cable entry plate.
3. Fit the required cable glands.
4. Route the cables through the cable glands.
5. Fit the cable entry plate to the terminal box with the assembled cables.
6. Connect the ends of the cables to the terminals in accordance with the circuit diagram. The
Refer to Chapter "Connecting cables ..." for more information.
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.
6.5.3
Certified cable entries, thread adapters and sealing plugs
Use only sealing plugs, cable entries & conductor entries and thread adapters that are certified
and marked for use in the respective hazardous zone.
6.5.4
Laying cables
● Lay the cables in accordance with IEC/EN 60364-5-52.
● For fixed cables, use EMC- and Ex-certified cable glands with strain relief. Screw the cable
● For loose cables, use twist-protection cable glands with strain relief.
● Use shielded cables whose shields are conductively connected to a large area of the
● Arrange the exposed connecting cables in the terminal box so that the PE conductor has
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Ensure that the cable entry plate can be assembled after drilling and that it features
sufficient stiffness.
circuit diagram is located in the cover of the terminal box.
glands into the threaded holes in the entry plate, which can be unscrewed. The cable glands
are not included in the scope of supply.
Comply with the installation and operation conditions specified in the certificate for these
cable glands and check that they have been fully complied with.
terminal box of the motor via EMC cable glands.
excess length and the insulation of the cable strands cannot be damaged.
SIMOTICS FD 1MH1
Operating Instructions 08/2017
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