Practical Drives, Motors & PLCs for Engineers and Technicians

THE WORKSHOP

This is a comprehensive, highly practical and interactive workshop. You will have an opportunity to learn and discuss the technology associated with these devices and their uses in industrial/process plants. You will learn the fundamentals of plant layout, the equipment used, design principles and procedures. The workshop includes practical examples from actual industrial applications to illustrate the principles of operation and the utility aspects of these devices. You will also be provided with a high quality workshop manual that IDC is known for. This course manual will be a valuable reference for many years after the workshop.

WHAT IS INCLUDED?

  • Receive a certificate of attendance in support of your continuing professional commitment
  • All workshops include the associated hardcopy technical manual
  • Printed workshop handouts
  • Lunch and refreshments
  • Interact and network with workshop attendees and experienced instructors
  • Practical, industry driven content to assist you in your continuing professional development (CPD)
  • Attendees automatically become IDC subscribers and receive exclusive deals and technical content every month

WHO SHOULD ATTEND?

This workshop is designed for personnel who want to understand the utilise variable speed drives and PLC’s for energy efficient application comprising of motor driven systems. The workshop will also benefit those working in system design as well as site commissioning, maintenance and troubleshooting. Typical personnel who would benefit are:

  • Electrical maintenance technicians and supervisors
  • Instrument and control engineers
  • Instrument technicians
  • Maintenance personnel
  • Mechanical engineers
  • Plant engineers
  • Process control engineers
  • Operations personnel
  • Service technicians

CONTENT SUMMARY

THE BASIC CONCEPTS

  • Variable Speed Drives (VSD) – their utilities in industry
  • Commonly used parameters associated with drives
  • VSD for speed control and energy saving
  • Basics of electrical machines
  • AC power system
  • PLC basics
  • PLC and process interaction

MECHANICAL, HYDRAULIC AND ELECTRICAL TYPE OF VSDs

  • Types of variable speed drives
  • Mechanical variable speed drives
  • Hydraulic variable speed drives
  • Electrical variable speed drives

3-PHASE AC MOTORS; THEORY, CONSTRUCTION AND MAINTENANCE

  • Fundamentals of 3-phase AC motors
  • Operating principles; 3-phase AC motors
  • 3-phase wound rotor motors
  • 3-phase synchronous motors
  • 3-phase induction motors
  • Induction motor equivalent circuit
  • Selection of motor

POWER ELECTRONIC CONVERTERS

  • Terminology and definitions; power electronics
  • Components of power electronic converters
  • Power diodes
  • Power thyristors
  • Commutation in electronic device switching
  • Power electronic rectifiers (AC/DC converters)
  • Gate commutated inverters (DC/AC converters)
  • Gate controlled power electronic devices

ELECTRICAL PROTECTION OF VSD COMPONENTS

  • AC converter protection circuit
  • Operator information and fault diagnostics
  • Protection of electric motors
  • Temperature; the critical parameter to monitor
  • Current sensor for thermal overload protection
  • Thermal overload protection – direct temperature sensing

VSD CONTROL SYSTEMS

  • The overall control system
  • Control system power supply
  • The DC bus charging control system
  • The PWM rectifier for AC converter
  • VSD control loops
  • Vector control of AC drives
  • Closed-loop field oriented vector drives
  • Speed feedback from motor

ELECTROMAGNETIC COMPATIBILITY

  • The electromagnetic interference
  • Sources of electromagnetic interference
  • Harmonics on the supply side of AC converter
  • Power factor and displacement factor
  • Voltages and current on the motor side of the PWM

SELECTION OF AC CONVERTERS

  • Important parameters considered for selection
  • The basic selection procedure
  • The loadability factor
  • The characteristics of machine load
  • The requirements for starting and stopping motor of VSD
  • Selecting motor and converter of correct specification
  • Summary of selection
  • Retrofitting electronic VSD

INSTALLATION AND COMMISSIONING OF VSD COMPONENTS

  • Installation and environment requirements
  • Power supply connections and earthing requirements
  • Installing controls of AC drives
  • Control wiring of VSD’s
  • Commissioning of VSD’s

PLC ARCHITECTURE

  • The processor unit
  • The PLC power supply
  • The PLC programming device
  • The memory system
  • Digital input output interaction
  • Analog I/O interaction
  • Digital input output modules
  • Connecting analog input output systems to PLC

BASICS OF PLC PROGRAMMING

  • Introduction to PLC programming
  • PLC programming steps
  • PLC programming languages
  • Commonly used logical instructions in PLC programming
  • Timers and counters
  • Program flow control instructions
  • Data load/transfer instructions
  • Arithmetical (math) instructions
  • Working example of PLC programming; drive application

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