Migration form PLC-5 to ControlLogix and Improvement of an Excavator Positioning System Using Frequency Converter and Induction Motors

This paper discusses the application of a frequency converter in v/f mode to control the position of an excavator using twenty shorted-rotor induction motors connected to a common bus. First, the current system is discussed along with its problems. Then, solution is applied to increase positioning accuracy, and the developed new system was implemented in the existing site. Finally, a conclusion of the effectiveness of the new management is made.