| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor drive device which can refer to an alarm history having been erased and can accurately and speedy deal with alarms at the time of fault analysis while making it possible to erase the history of alarms. SOLUTION: This device is equipped with an adding device 9 which adds alarm history erasure information 8 to the value of a parameter of an alarm history without initializing the value of the parameter when erasing the alarm history 3 stored as the value of the parameter in a storage device 4 of the motor drive device, an output device 5 which outputs the alarm history 3 when the alarm history erasure information 8 is inactive and the initial value of the alarm history 3 when active and an output decision device 10, and when a fault of the motor drive device is diagnosed, it is made possible to refer to the alarm history 3 irrelevantly to the alarm history erasure information 8 according to the value of the parameter. |
