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Connection procedure of the brake chopper cubicle
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or death, or
damage to the equipment can occur.
If you are not a qualified electrical professional, do not do installation or
maintenance work.
1. Stop the drive and do the steps in section
you start the work.
2. Make the internal connections of the brake chopper cubicle. See the diagram above.
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Connection procedure of the resistor cables
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or death, or
damage to the equipment can occur.
If you are not a qualified electrical professional, do not do installation or
maintenance work.
1. Stop the drive and do the steps in section
118 Electrical installation
you start the work.
2. Open the door of the brake unit cubicle and remove the shrouding.
3. Lead the cables into the cubicle. Make the 360° earthing arrangement at the cabl
3. Lead the cables into the cubicle. Make the 360° earthing arrangement at the cable entry
entry as shown.
as shown. Install the rubber grommet (if present) below the cable entry for proper sealing.
4. Cut the cables to suitable length. Strip the cables and conductors.
4. Cut the cables to suitable length. Strip the cables and conductors.
5. Twist the cable shields into bundles and connect the bundles to the PE busbar in the
5. Twist the cable screens into bundles and connect the bundles to the PE busbar in
cubicle.
cubicle.
6. Connect the resistor cables. Note the connection of the third conductor and the cable
shield. See also the circuit diagrams delivered with the unit. See the technical data for
6. Connect any separate ground conductors/cables to the PE busbar in the cubicle.
tightening torques.
7. Connect the phase conductors to the output terminals. Use the torques specified
under
Tightening torques
8. Refit any shrouding removed earlier and close the cubicle doors.
9. At the motor, connect the cables according to instructions from the motor
manufacturer. Pay special attention to the phase order. For minimum radio-freque
interference, ground the cable shield 360 degrees at the lead-through of the moto
terminal box, or ground the cable by twisting the shield so that the flattened shield
wider than 1/5 of its length.
Electrical safety precautions (page 50)
Electrical safety precautions (page 50)
Grommet
(page 199).
Electrical installation 53
before
before
11
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