The objective
of this AC Drive (VFD) seminar is to provide
maintenance personnel and technicians with useful information about AC drives that can be immediately put to work on the
job. The functions and testing procedures of the major drive components are examined in detail. The hands-on training also includes connecting a 9-lead, 3-phase motor to an AC drive and programming the drive for proper operation. The student will start-up and operate the drive in the classroom and will be faced with programming challenges. Upon completion of this seminar the student will be able to troubleshoot, repair, program, and solve most drive related problems including programming and start-up of new or replacement AC drives. While the information provided in this seminar can be applied to all modern brands of PWM type AC drives, the hands-on drive programming will be performed on Allen-Bradley AC drives.
Course topics include:
- 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
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