| 摘要 |
The motor unit includes a connection plate (3) and a printed circuit card (4) carrying an electronic circuit for control of the motor. The card (4) has a unit (13,14) for detecting blocking of the rotor of the motor. The card (4) and/or the plate (3) support temperature sensors (15,16). The card (4) includes switching units (13,14), connected to the sensors (15,16), which interrupt the electrical supply to the motor when the temperature measured by the sensors (15,16) reaches a value greater than an upper step value and only reconnects the electrical supply when the temperature has fallen to a lower step value.
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