| 摘要 |
<p>Provided is a motor control device capable of identifying supply voltage abnormity and regeneration abnormity. The motor control device comprises: a convertor (116) for converting a DC voltage into an AC voltage and driving a motor (118) in a power operation mode, and converting the AC voltage from the motor (118) into the DC voltage and supplying the DC voltage to a regeneration resistor (122) in a regeneration mode; a switching part (124) for connecting the regeneration resistor (122) with the convertor (116) in the case that the DC voltage exceeds a threshold value; an on-off time detection part (141) for detecting switch-on time and switch-off time of the switching part (124); and an abnormity judging part (147) which uses different threshold values in the power operation mode and the regeneration mode, wherein, in the power operation mode, the case that accumulated conduction time of the switching part (124) exceeds the threshold value of the power operation mode is judged to be supply voltage abnormity, in the regeneration mode, the case that accumulated conduction time of the switching part (124) exceeds the threshold value of the regeneration mode is judged to be regeneration abnormity.</p> |
