Method for evaluating the operational readiness of an electric motor, electric motor, and ventilator

A method for evaluating the operational readiness of an electric motor, the method comprising:

• initiating a run-up process wherein the electric motor speed is changed between a plurality of speed levels;
• generating at least one measured value by measuring a physical variable of the electric motor with a sensor during at least one of the speed levels wherein during generating the at least one measured value one or more of an acceleration and a speed of vibration of the electric motor is measured using a vibration sensor of the electric motor and a vibration value is generated;
• loading at least one parameter datum from a parameter memory of the electric motor, wherein the at least one parameter datum corresponds to the generated at least one measured value;
• evaluating the at least one measured value for at least one of the speed levels using the at least one loaded parameter datum;
• and
• determining a first vibration value while the electric motor is stopped and determining a second vibration value at a non-zero speed, wherein damage is determined to be present if a difference between the second vibration value and the first vibration value exceeds a calibration vibration value by a predetermined degree, the calibration vibration value being generated during a calibration measurement of the electric motor for the non-zero speed.