Electrical installation 107
Connecting the control cables
Connection diagram
See the final circuit diagrams by the designer of the cabinet-installed drive. For the default
I/O connection diagram of the supply unit, see section
Default I/O connection diagram of
on page
Connection procedure
This section contains instructions on how to connect external control cables to the supply
unit.
WARNING!
Only qualified electricians are allowed to do this work. Read the
complete safety instructions of the drive. Ignoring the instructions can cause
physical injury or death, or damage to the equipment.
WARNING!
Apply grease to stripped aluminum conductors before attaching them
to non-coated aluminum cable lugs. Obey the grease manufacturer’s instructions.
Aluminum-aluminum contact can cause oxidation in the contact surfaces.
1. Disconnect the drive from the AC power line and make sure it is safe to start the work.
Obey the instructions in section
Basic electrical safety precautions
on page
2. Open the door of the cabinet and remove the shrouds (if any).
3. Run the external control cables into the inside of the cabinet.
•
Run the cables between the EMI conductive cushions (a), or the equipment that
you can use for the 360 degree grounding of the cable shield. Strip the cable at
this location to enable proper connection of the bare shield and the cushions.
Tighten the cushions firmly onto the cable shields.
•
Seal the cable lead-through with a grommet.
4. Run the cables to the appropriate terminals. Wherever possible:
•
Use the existing cable trunking in the cabinet.
•
Use sleeving wherever the cables are laid against sharp edges.
•
Tie the cables to provide strain relief.
5. Cut the cables to suitable length. Strip the cables and conductors.
6. Twist the cable shields into bundles and connect them to the ground terminal nearest
to the terminal block. Keep the unshielded portion of the cables as short as possible.
7. Connect the conductors to appropriate terminals. For the tightening torques of the
BCU control unit I/O terminals, see section
Default I/O connection diagram of the
on page
.
8. Fasten the shrouds (if any) and close the doors.
Содержание ACS880-304 +A018
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