| 摘要 |
In a process for operating an electronically commutated electric motor (2), a signal value signal for the commutation position of the rotor of the electric motor (2) is readied, and the windings of the electric motor (2) are supplied with current such that the rotor of the electric motor (2) is positioned on the commutation position specified by the standard value signal. A measuring signal for the position of the rotor of the electric motor (2) is recorded, evaluated and compared with the standard value signal for the commutation position. The current supply of the windings of the electric motor (2) is interrupted if the position measuring signal and/or the standard value signal for the commutation position exceed a specified highest value, and/or if the differential signal between the position measuring signal and the standard value signal for the commutation signal lie outside a specified tolerance range.
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