Abnormality diagnosis device of motor facility, abnormality diagnosis method of motor facility, and abnormality diagnosis system of motor facility

摘要

An abnormality diagnostic device of an electric motor unit includes a monitoring diagnostic section for diagnosing an abnormality of an electric motor and a power transmission mechanism based on the monitoring result of the current flowing to the power supply line of the electric motor, and the monitoring diagnostic section performs an analysis of the frequency of the electric current and the analysis section of the current An abnormality diagnostic unit is provided for diagnosing an abnormality of the motor and the power transmission mechanism from the result of frequency analysis.