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Frequency converter

  • US 8,179,077 B2
  • Filed: 10/03/2008
  • Issued: 05/15/2012
  • Est. Priority Date: 10/09/2007
  • Status: Expired due to Fees
First Claim
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1. A frequency converter comprising:

  • electric power supply devices for supplying electric power to an electric motor to be connected to the frequency converter;

    a controller configured to control the electric power supply;

    a joystick for conveying control signals to the controller, the joystick comprising an acceleration sensor for registering movements of the joystick and for generating control signals representing the movements;

    a switch for triggering a control cycle during which the controller receives the control signals generated by the joystick and stores the control signals in a memory; and

    a display and a keypad for browsing and modifying the control signals stored in the memory for utilizing the modified control signals later in controlling of the electric power supply.

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