SCADA based system for discriminating faulty bearing of induction motors used in process control operations

The present paper discusses about the faulty bearings identification system for the actuators used in industrial and process control operations. Due to frequent speed alteration of electrical 3-phase induction motors by the automatic loop controller, rotating elements such as bearings are often responsible to generate faults. The proposed system works along with the Supervisory Control and Data Acquisition (SCADA) system as used for the automatic control of the process. The fault discrimination works on the basis of vibration amplitudes measured through piezoelectric accelerometer. From the experiment with various faulty and healthy bearings, it has been observed that, the fault discrimination becomes possible, at certain operating conditions. The proposed system works within SCADA system, and primarily collects the variation of vibration amplitudes at various operating condition through the process and controlled variables of the process.