DMC’s fan vibration and current test application allowed the client to utilize their own PLC and HMI to set up configurable parameters like acceptable fan RPM or current limits. The data was then communicated over Modbus to our LabVIEW application to conduct the automated testing.
Once testing begins, the current measurements are displayed on the UI in real-time, processing the fan’s RPM and displaying its fundamental frequency and amplitude. The frequency was determined by using a tachometer. Two triaxial accelerometers placed on the fan were sampled for acceleration data and processed through a Hanning window after the DC frequency component was eliminated. The data was then analyzed in a Fast Fourier Transform (FFT), which allowed us to determine the actual vibration characteristics of the fan.
After the test completes, DMC’s application determines if the test passes or fails, posts the data and results to a SQL database, and communicates through Modbus to let the HMI and the operator know the next test is ready to start.
Learn more about DMC's Test and Measurement solutions.