| 摘要 |
The present invention relates to a frequency converter comprising electric power supply devices for supplying electric power to an electric motor (26) to be connected to the frequency converter, a controller configured to control the electric power supply. In order to control the electric power supply, the frequency converter comprises a joystick (22) for conveying control signals to the controller, the joystick (22) comprising an acceleration sensor for registering movements of the joystick (22) and for generating control signals representing the movements, and a switch (24) for triggering a control cycle during which the controller receives the control signals generated by the joystick (22) for utilizing the control signals in controlling of the electric power supply.
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