COURSE NAME:Operation and Adjusting Parameters of Variable Frequency Drives


This course can be scheduled at your convenience, to request this course please click here

Learn proper design recommendations to ensure that your equipment is as energy efficient and safe as possible. Discover the best practices for frequency drives in HVAC, pumping and facility applications. Approximately 50% of these systems are running in bypass which usually results in higher energy costs. Whether in facility maintenance, chilled water systems, waste water systems or manufacturing this course unlocks the secrets of VFDs to maintain your equipment. In hands-on lab exercises you will use scope meters to see how improper designs can lead to motor deterioration and other problems. You will also spend over 50% of the time programming and troubleshooting newly upgraded equipment that includes Allen-Bradley Powerful ex4 and ABB ACS-350 variable frequency flux vector drives.



Introduction: Motor-Drives System Design

  • Pros and cons of adjusting motor speed
  • Determine operating costs
  • Technological capabilities
  • Operational reliability
  • Application characteristics

Power Transmission, Relationship and Formulas

  • Affinity laws
  • Torque and horsepower/power factor
  • Electrical demand

AC Induction Motors

  • How a motor produces torque
  • Speed, pole, frequency relationship
  • Types of AC motors
  • NEMA designs
  • Motor enclosure types
  • Frame dimensions
  • NEC® and motor protection
  • Efficiency ratings

Motor Preventive Maintenance

  • Identify overloading
  • Loose connections
  • Phase/voltage unbalance
  • Single phasing
  • Environmental concerns
  • Megger testing
  • Effects of common mode voltage on bearings and fixes
  • Motor nameplate information
  • Drive fundamentals and electronics
  • Converter, DC bus, inverter
  • Pulse width modulation
  • Carrier and fundamental frequencies
  • Torque producing and magnetizing current
  • External operator control wiring
  • Analog control

Effect of Operating on Adjustable Frequency

  • Volts-to-hertz ratio
  • Constant voltage mode
  • Sensor less vector
  • Flux vector: open and closed loop

Troubleshooting Drives

  • Understanding fault codes
  • Clearing faults
  • Symptoms and corrective action

Drive Maintenance

  • Dry, clean, cool and tight
  • Isolation transformer/reactors
  • Operator interfaces
  • Proper selection and application for drives
  • Load matching
  • Bypass considerations
  • Facility operating problems
  • Variable torque operations
  • Fans and pumps
  • Payback/return on investment calculations

Hands-On Lab Exercises

  • Using a scope meter
  • Identifying voltage signals
  • Programming basic drive parameters
  • Drive control wiring and diagnostics
  • Troubleshooting using the keypad
    • 5 Day(s)

    The presentation is generally appealing to me. The dedication & devotion of the instructor are both laudable & admirable.
    Mohammed F. Alotaibi

    Really this course is important for any inspector, so I will recommended it for our employees. And thanks a lot!
    Ahmed Al-Yami

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    Ahmed Afifi
    Al-Zamil CoolCare

    I would like to appreciate you as well as the instructor for a good training due to the fact that the helping to gain new information about the types of valve with advantages and disadvantage as well. Many thinking.
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    General Authority of Civil Aviation (GACA)

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    Al-Suwadi Services

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    Coldstorec Group Of Saudi Arabia

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    Saudi Aramco

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    Al-Suwadi Services

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    Al Khodari Company

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    Al Khodari Company

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    Muzammil Hayat
    Al Khodari Company

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    Ibrahim Darwish
    Al Khodari Company