| 摘要 |
PROBLEM TO BE SOLVED: To improve certainty to halt to drive an actuator driven by an inverter, when an abnormality is detected in an air conditioner, requiring to halt to drive the actuator.SOLUTION: A drive signal is output to a PWM drive circuit 65 and an inverter 61. A CPU 63 controls the PWM drive circuit 65. A first mechanical relay RY1 is connected to the PWM drive circuit 65 in a manner to be capable of intercepting the inverter drive power of the PWM drive circuit 65. A power supply PS3 for inverter control continues supplying power to the CPU 63. The first mechanical relay RY1 intercepts the inverter drive power PS2 of the PWM drive circuit 65, when a high-pressure abnormality of an air conditioner 10 is detected and the halt of the drive of a compressor 31 is required.SELECTED DRAWING: Figure 2 |
