AC Inverter Drives (Application and Maintenance)

OBJECTIVES Manufacturers of inverter drives report that of the units returned to them as faulty, up to 80% do not reveal any defects. Such returns are more a result of incorrect programming and/or fault diagnosis by maintenance personnel. This comprehensive course is designed to counter such difficulties by enabling the maintenance engineer to correctly set up, maintain and carry out effective fault-finding on inverter drive systems. Unlike some product-specific courses, this course is substantially generic-effectively covering most of the variable speed drive systems found in industry today and providing a thorough understanding of drive operation within the context of industrial systems.   OBJECTIVES Participants will be able to :

• Properly Matching A Drive to A Machine
• Choosing the Correct Motor
• Choosing the Best Type of Drive
• Identify & Correct Drive System Problems
• Identify & Test Major Drive Components
• Perform Start-Up of an AC Drive
• Program & Adjust the Drive for Desired Operation

OUTLINE COURSE

• Evolution of adjustable speed drives
• AC & DC electrical terminology
• AC motor theory
• Choosing the correct motor
• AC drive (VFD) theory
• AC drive terminology
• AC drive applications with discussion of various types of drives including vector drives
• Properly matching a drive to a machine
• Benefits of over-speeding motors
• Typical application mistakes & pitfalls
• Mechanical theory: horsepower & torque
• Basic AC & DC electrical theory for drives
• Transformer basics
• AC motor theory with NEMA nameplate definitions
• Semiconductor theory and diode rectifiers with lab
• Examination, theory, and testing the major AC drive components including the input rectifier, soft-charge resistor, buss capacitors, and output transistors
• Examination of AC drive construction
• Common error codes and solutions
• Diagnosing drive problems
• Recommended drive start-up procedure
• Hands-on AC drive and motor operation and programming

  PARTICIPANT Suitable for anyone who is required to maintain or configure inverter drives (electricians, instrument technicians, etc). Whilst a knowledge of basic electrical principles is desirable, no prior knowledge of motor theory or electronics is necessary. TRAINING METHOD Presentation Discussion Case Study Evaluation   FACILITY Training Kit Handout Flash disk Certificate Lunch + 2x Coffee Break Souvenir Pick Up Participant (Yogyakarta)