Deactivating the EMC capacitors – size 0 only

DANGER

Severe or fatal injuries from electric shock.
  • Disconnect the inverter from the power. Disconnect the DC 24 V supply and the line voltage.
  • Wait 10 seconds.
  • Ensure that the unit is de-energized.
  • Take appropriate measures to avoid electrostatic charges (use discharge strap, conductive shoes, etc.) before removing the cover.
  • Touch only the unit frame and the heat sink. Do not touch any electronic components.

Only electricians are allowed to convert the unit. Once converted, the unit must be marked with the sticker provided in the accessory bag.

Proceed as follows to deactivate the EMC capacitors in the MOVITRAC® B frequency inverter:

  1. Open the unit:
    • Remove all connectors.
    • Remove the electronics shield clamp.
    • Remove the housing retaining screw in the center of the housing front.
    • Remove the housing.
  2. Remove the two screws [A] securing the circuit board.
  3. Install the screws in the plastic insulations provided for this purpose [B].
  4. Fasten screws to the unit [C].
  5. Close the unit.
  6. Attach the sticker provided to the unit.

Deactivating the EMC capacitors stops earth-leakage currents from flowing over the EMC capacitors.

  • Ensure that the earth-leakage currents are essentially only determined by the level of the DC link voltage, the PWM frequency, the motor cable used, its length and the motor in use.

When the suppression capacitors are deactivated, the EMC filter is no longer active.