STÖRUNGSÜBERWACHUNG EINER DURCH EINEN ELEKTRISCHEN MOTOR ANGETRIEBENEN ARBEITSMASCHINE

摘要

The invention relates to a device for detecting a malfunction of a machine driven with a variable rotational speed by an electric motor, whereby the motor is switched off when a malfunction occurs. A regulating device which controls the motor records the operating values of the motor during a learning function and said operating values can then be used to detect malfunctions. The method steps used for this purpose provide a learning function of the regulating device before activating the malfunction detection. To this end, the machine and/or a unit actuated by the machine runs through all possible operating states in which the operating values of the motor recorded during the learning function are, in their association with the machine and/or the unit driven by the motor, stored, brought forward and used for monitoring malfunctions.