2019 February: Instruments for Elevator System Debugging and Diagnosis
SPECIAL NOTICE: Please check each course for verification of approval before purchasing.
This test is based on the article, Instruments for Elevator System Debugging and Diagnosis, published in the February 2019 issue and counts as one contact hour (0.1 CEU) of elevator industry continuing education credit. Most courses are approved by NAEC for CET/CAT and NAESAI for QEI and in the following states: Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Kentucky, Maryland, Mississippi, Missouri, Montana, Oklahoma, Pennsylvania, Vermont, Virginia, Washington, West Virginia, Wisconsin.
Learning Objectives - After reading this article, you should have learned about:
- Test and measurement tools for elevator troubleshooting
- Advantages in a PC-based spectrum analyzer
- Differences between time and frequency domains
- Structure of a VFD
- How PWM is used to control speed of an AC induction motor
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