Course Introduction:

This course Variable Frequency Drives introduces the participants to the world of variable frequency drives and their applications in industrial plants and commercial buildings. Participants will perform activities with a real-life variable frequency drive. They will input motor data into the variable frequency drive, set parameters for speed control and overcurrent protection, and check fault codes. Participants will complete this VFD training course with the ability to lower the cost of VFD operation, thus alleviating the need for hiring costly outside service contractors, all while establishing a culture of safe work practices among employees.

Students will learn how to improve VFD control and efficiency, troubleshoot and fix VFDs, reduce equipment downtime, and eliminate chronic VFD problems. 

• Anyone associated with the use of electrical motors in the industrial or automation environment. The course will also benefit those working in system design as well as site commissioning, maintenance and troubleshooting.
• Plant Engineers
• Instrument Technicians
• Engineering and design personnel
• Operations personnel
• Electrical Maintenance Technicians
• Instrument and Control Engineers
• Electrical Contractors
• Electrical consulting engineers
• Process control Engineers
• Mechanical Engineers
• Service Technicians
• Maintenance Personnel
• Electrical Maintenance Supervisors

Pre Test

Introduction

VFD Safety Review

• Electrical Hazards
• Establishing an Electrically Safe Work Condition
• Personal Protective Equipment & Insulated Tools

Electrical Basics Review

• Multimeter, Clamp-On, Megohmmeter
• Single Phase and Three Phase Motors
• Motor Troubleshooting and Replacement
• Basic Control Circuits & Troubleshooting

What VFDs Do

• Motion Control / Motor Speed
• Air Flow / Liquid Flow / Pressure Control
• Eliminates the need for:
  • Variable Transmission or Sheave
  • Variable Vanes or Dampers on Fans
  • Variable Valves on Pumps

Benefits of Using a VFD

• Energy Savings
• Easier Maintenance
• Enhanced System Monitoring

Load Types

• Constant Torque – Conveyors, Positive Displacement Pumps, Superchargers
• Variable Torque – Centrifugal Fans or Pumps, Saws, Routers, Planers

VFD Options

• Bypass – Two or Three Contactor Style, Disconnect Switch Style, Soft Starter
• Fusing – VFD or Bypass Protection
• Input / Output Reactors
• Motor Overload Device
• Transient Protection
• Auxiliary Relays
• Power Line Phase Reversal Detection

Installation of a VFD

• Environmental Concerns
• Clearances
• Conduit Entry

Customer Connections

• Safety Circuit
• Start / Stop
• Jog
• Status Indication
• Fault Indication
• Remote Speed Reference
• Monitoring of Motor Parameters

Wiring & Grounding VFDs

• Induced Signals
• Inductive, Capacitative
• Incoming Power (line) Wiring
• Motor (load) Wiring
• Control Wiring
• Proper Grounding Methods

Controlling a VFD

• Keypad Controls
• Terminal Strip Control – Automatic, Manual
• Bus Communication Control
• Open Loop Control
• Manual Operation
• Automatic Operation
• Sensor less Flux Vector
• Closed Loop Control
• PI Loop Configuration
• Sensor or Transducer Feedback
• Motor Shaft Encoder Feedback

VFD Setup, Programming, & Troubleshooting

• Language & Display
• Control Modes
• Open Loop, Closed Loop
• Motor Data
• Power (kW) and RPM
• Voltage, FLA Current
• Service Factor, Power Factor
• References & Limits
• Motor Speeds – Min, Max and Preset
• Ramp Times
• Speed Reference
• Skip Frequencies
• Limits for Alarms or Faults
• Inputs / Outputs – Analog, Digital, and Relay
• Application Functions
• Reset
• Flying Start
• Sleep Mode
• Switching Frequency
• No Load
• Phase Loss
• Closed Loop Functions
• Normal / Inverse
• Anti-Windup
• Start-up Frequency
• Low pass Filter

Post Tests

International Center for Training & Development (ICTD) will award an internationally recognized certificate(s) for each delegate on completion of training.

A variety of methodologies will be used during the course that includes:

• (30%) Based on Case Studies
• (30%) Techniques
• (30%) Role Play
• (10%) Concepts
• Pre-test and Post-test
• Variety of Learning Methods
• Lectures
• Case Studies and Self Questionnaires
• Group Work
• Discussion
• Presentation

To be advised as per course locations. This rate includes participant’s manual, Hand-Outs, buffet lunch, coffee/tea on arrival, morning & afternoon of each day.

Daily Course Timings: