Check list: Before starting the Clean Power VFD

The following list intends to help the user going through a step-wise check before powering up the Clean Power VFD.

  1. Model number.

    Check the model number of the Clean Power VFD to make sure you have received the correct model.

  2. Environment.

    Check that the area and environment around the Clean Power VFD comply with the specifications.

  3. Power supply voltage.

    Check that the power supply voltage is within the range of the input voltage specifications of the Clean Power VFD.

  4. Motor voltage

    Check that the nominal motor voltage corresponds to the output specifications of the Clean Power VFD.

  5. Short-circuit protection

    Check that a short-circuit protection is properly installed, complying with international and local regulations.

  6. Power supply connections

    Check that the main line power supply is correctly wired to the terminals R / L1, S / L2, T / L3 of the Clean Power VFD.

  7. Connection to the motor

    Check that the Clean Power VFD is connected properly to the motor. The motor cables must correspond to the output terminals U / T1, V / T2, and W / T3 of the Clean Power VFD to respect the order of the phases. If the phase sequence is incorrect, the motor will rotate in the reverse direction.

  8. Cross-section of the wires

    Check that the cross-section of the wires complies with the recommendation of this document.

  9. Voltage drop on the cable

    Check that the voltage drop on the cable between the Clean Power VFD and the motor is less than 2% of the motor nominal voltage.

  10. Grounding

    Check that the Clean Power VFD is properly connected to ground.

  11. Power terminal screws tightening torque

    Check that the power connectors' screws are tightened as specified in this document.

  12. Power cables end connections

    Check that the cables are not loosened from the terminals and not stripped too long, to avoid risks of short-circuits.

  13. Multiple motors protection

    When using multiple motors on a single Clean Power VFD, ensure that each motor is installed with overload protection.

  14. Cables for control

    Check that all control wiring to the Clean Power VFD control circuit uses twisted pair cables.

  15. Shielding

    Check that all the shielding on all shielded cables is connected to the protective earth terminal.

  16. STO1 and STO2 terminals

    Check that the STO1 and STO2 terminals are correctly wired to a safety device. If STO is not used in your application, check that STO1 and STO2 terminals are connected to +24 terminal.

  17. Control terminal screws tightening torque

    Check that the screws on the control terminal blocks are tightened as specified in this document.

  18. Control cables end connections

    Check that the cables are not loosened from the control terminal blocks and not stripped too long, to avoid risks of short-circuits.

  19. Clean connection

    Check that no cable copper strands touch other terminals or connections on the terminal block.

  20. Foreign objects

    Pick-up any small pieces of cables or copper that may remain on or around the Clean Power VFD from your stripping and wiring operations.

  21. Separation of power and control

    Check that control circuit wires and main circuit wires (power supply and motor) are correctly separated.

  22. STO cables

    Check that the cable length for STO signal, from operating contacts to the Clean Power VFD, is shorter than 30 m (98.4 ft)