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Variable Frequency Drive Set Up and Troubleshooting
Registration Information
Variable Frequency Drive (ELC 1131)
(Approved for 14 Hours – Renewal Training Credit (RTC)
Wednesday, February 27, 2008 8:00am-4:00pm $495
Seminar Location: Seminar is held at Joliet Junior College’s Main Campus, Room T-1050, 1215 Houbolt Road, Joliet, Illinois.
Seminar Description: This seminar is for electricians or personnel who work with A.C. Variable Frequency Drives. If you are involved with the set up or troubleshooting of A.C. drive systems, this seminar will be of use to you. The two-day seminar consists of a series of hands-on exercises, demonstrations, and lecture designed to help you learn through doing and observing. There is enough theory explained that someone with a very limited electrical background will be able to master the seminar material.
You will learn
- How an A.C. pulse width modulated drive works.
- What the different drive parameters affect.
- How to set the drives’ parameters.
- How to troubleshoot the drive and motor system.
- The difference between constant torque and variable torque loads.
- How to save energy cost using a variable frequency drive to control a variable torque load.
- What reflected wave phenomenon is and what can be done about it.
Who will benefit
- Maintenance personnel, electricians or engineers who desire more understanding of how drives operate and knowledge of set up and troubleshooting
- Supervisors responsible for drive and motor related issues such as set up or testing
Topics
- Pulse Width Modulated Drive Theory
A.C. rectification
D.C. inversion
A.C. frequency and its affect on motor speed
Relationship between motor slip, frequency, speed, current and load
- Control Modes
Basic control
Analog control
Digital control
Master-follower control
- What the Different Drive Parameters Affect
Ramp up
Ramp down
Smoothing time
Frequency set point
Local or remote mode
Lock outs
Maximum and minimum set points
Skip frequency
Fixed frequencies
Relay output
Slip compensation
Slip limit
Pulse frequency
Control mode
- Braking
Ramp down
D.C. injection braking
Rapid braking
- Master-Follower Control of Several Motors
- Troubleshooting the Motor & Drive
Testing the full wave bridge rectifier
Testing the drive output
Using a scope meter
Your instructor
Jerry Raino is a member of the technical department at Joliet Junior College. He has been an instructor in the Electrical/Electronic Automated Systems program since 1984. He is also an journeyman electrician. Jerry has a B.S. in Vocational Education from Southern Illinois University and a M.S. in Instructional Technology from Northern Illinois University. He is also the co-author of a training manual, Industrial Motors, published by Energy Concepts (1991).
 IN-HOUSE TRAINING AVAILABLE
For additional information about in-house training, please call Amy Murphy at (815) 280-1418 or email
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