This exam is based on the article, Replacing Motor-Generator Sets with Modern Static DC Drives, and counts as 1 Contact Hour (0.1 CEU) of elevator-industry continuing education credit. Approved by: NAEC for CET, QEI Services and NAESA for QEI (A maximum of 0.2 CEU for online courses per annual renewal period can be applied towards maintenance of qualifications for certified inspectors.) and the states of Florida, Pennsylvania, Arkansas, Kentucky, Virginia and West Virginia.
Learning Objectives - After reading this article, you should have learned about:
- the drawbacks of motor-generator sets.
- the value of static DC drives.
- considerations when replacing a motor-generator set with a digital DC drive.
- input power considerations.
- the issue of power-line distortion.
- sizing criteria for transformers.
- output power considerations.
- ripple-filter recommendations and adjustments.
- car-controller considerations in a modernization with a DC drive.
- commissioning a DSD 412 DC elevator drive.
- verification of motor data and wiring.>
- motor field board setup.
- recording motor data and encoder setup.
- grounding considerations
- power-up verification and advanced diagnostics.
Enrollment Procedures:- Include your full name when purchasing the online course.
- Within 2 to 3 business days you will receive an email with the article and instructions for taking the exam.
- Study article.
- Use the provided online link, ID, and Password to login to the Online Testing Center.
- If you scored 80% or above you can immediately print your certificate of completion. If you score below 80% you will have up to two free retakes.