Importance

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Abstract

A system for detecting motor disconnections while a motor is switched off comprises a motor, a motor drive circuit, and a processor. The processor determines that a pulse signal that powers the motor is enabled. The processor determines whether a permanent magnet associated with the motor is being aligned with at least one winding associated with the motor. The processor communicates, to the motor drive circuit, a control signal that indicates to transmit a DC voltage signal to a first terminal from among the terminals at the motor. The processor determines a first current value at the first terminal of the motor. The processor compares the first current value with a first threshold current value. The processor determines that the first current value is less than the first threshold current value. In response, the processor determines that the first terminal of the motor is disconnected from the motor drive circuit.

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First Claim