| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately detect a condition of a controlled object independently from a condition of a microcomputer, and to properly take measures against a failure even when the failure is detected in the controlled object. <P>SOLUTION: This control device of the air conditioner, controls a compressor motor by the microcomputer, and is equipped with: a motor driving circuit 3 for driving the compressor motor by outputting a prescribed signal on the basis of a command from the microcomputer; a failure detecting circuit 4 receiving an inducing or driving voltage signal of the compressor motor, and further receiving a command voltage signal transmitted from the microcomputer to the compressor motor for detecting the failure of the compressor motor on the basis of the inducing or driving voltage signal and the command voltage signal; a charging/discharging circuit 5 performing any of charging and discharging in accordance with whether the failure detecting circuit 4 detects the failure of the compressor motor or not; and a switching circuit for switching the availability of output of the motor driving circuit on the basis of a voltage level of the charging/discharging circuit 5. <P>COPYRIGHT: (C)2011,JPO&INPIT |
