Electrical connection
6.1 Connecting the machine
1MB..5/6 shaft height 71 ... 355
70 Operating Instructions, 07/2020, A5E41926185A
For defined directions of rotation (direction of rotation arrow), appropriately connect the line
power cables.
• If you connect line cables with a phase sequence of L1, L2, L3 at U, V, W, the resulting
rotation is clockwise.
• If you interchange two connections, e.g. you connect L1, L2, L3 to V, U, W, the resulting
rotation will be counter-clockwise.
Counter-clockwise rotation
Direction of rotation of the motor when looking at DE
6.1.2.4 Additional bores in the terminal box
Additional bores in the terminal box must be drilled by the manufacturer or by a specialist
workshop for electrical machinery that has been authorized by the manufacturer.
6.1.2.5 Cable entry
Certified cable entries, thread adapters and sealing plugs
Only use sealing plugs, cable glands and conductor glands or thread adapters that are
suitable, certified and marked for use in the respective explosion protection type and degree
of protection (IEC / EN 60079-14).
Terminal box
The number and size of the cable entry tapped holes is provided in the machine dimension
drawing.
Inserting cables into the terminal box
1. Only use cable entries that are suitable for the cables.
2. Only use cable entries and cables suitable for the prevailing ambient temperature.
3. Ensure that the power cables are strain relieved when inserting them in the terminal box.
4. Carefully connect the cables and ensure a reliable protective conductor connection.
5. Tighten the glands and the elements for the strain relief with the torque specified by the
manufacturer.
6. Check the cable entries and cables to ensure that they are correctly sealed and firmly seated.
7. Correctly close and seal threads or holes that are not being used ensuring that the IP degree
of protection is maintained. The IP degree of protection is specified on the rating plate.
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