IMTMA Training Centre

Introduction to Basics Of CNC System - Architecture, Motors, Drives, Encoders And Troubleshooting

Focus Areas

  • Introduction to machine tools
  • Evolution of machine tools
  • Fundamentals of CNC systems and CNC architecture
  • Power elements as switching devices
  • AC spindle and feed drives
  • Four quadrant operation
  • Spindle motor characteristics
  • Block diagram of closed loop system
  • Regenerative braking
  • Section of 6 pole synchronous servo motor
  • Variable frequency drives
  • Monitoring circuits used in drives
  • Real time requirements for a digital drive interface
  • Grounding of all machines


The program Control system for CNC Machine Tool is essentially designed and structured to meet the needs of all practicing engineers, particularly from Electrical and Electronics background, engaged in the areas of Design, Assembly & Interfacing, and Testing and Service of CNC machine tools. Program provides insight into the working of a closed loop system with all major constituents of the CNC control Viz: NC, PLC, Drives and Feedback elements covered and explained in detail.

Key Takeaways

  • Refresh CNC fundamentals
  • Selection of CNC system and motor optimization
  • Understand easy Interfacing of CNC
  • Select hardware based on space, location and reliability
  • Make a selection on less hardware with greater reliability
  • Diagnose a fault faster
  • Fine tune a CNC parameter for improved performance

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