ELECTRONICALLY COMMUTABLE MOTOR

摘要

The invention relates to an electronically commutable motor whose exciting windings, via semiconductor output stages, can be controlled by an electronic control unit using PWM control signals. A specified value can be given beforehand to the control unit and the control unit transmits corresponding PWM control signals to the semiconductor output stages. The aim of the invention to easily monitor the starting of the motor and to prevent an overloading. To these ends, a monitoring device, using the pre-assignment of the specified value and/or the switching on of the control unit and/or the semiconductor output stages, monitors whether the motor has reached a minimum rotational speed after the completion of a predetermined or predeterminable starting time, and the control unit and/or the semiconductor output stages can be switched off if the minimum rotational speed is not reached.