AC Adjustable-Speed Drive Product Research (November 2007)

Research was undertaken to gain a better understanding of Control Engineering subscribers’ applications and needs regarding AC Adjustable-Speed Drives.


Research was undertaken to gain a better understanding of Control Engineering subscribers’ applications and needs regarding AC Adjustable-Speed Drives.

Executive Summary
• Among those who specify, recommend, or buy AC Adjustable-Speed Drives, 76% do so for in-plant requirements, while 43% do this for OEM needs.
• Almost half of respondents mentioned pumps, fans, and blowers combine as the primary application for AC adjustable-speed drives.
• Almost 90% of respondents use Voltz/Hertz (open loop) AC drives. A little over half are using sensorless vector control.
• A little over two-thirds of respondents mentioned simple controls / setup as having great influence over which AC adjustable drives they purchase. 44% respondents mentioned torque control as an influential performance feature when deciding which AC adjustable drives to use.
• Nearly two-thirds of respondents use line conditioning devices and about one-third use AC microdrives.
• Almost 90% of respondents have stand alone drives. Most respondent locations are using 1 to 5 hp range AC Drives. The average number of 11 to 20 hp drives in use is 85 per respondent location.
• Three-fourths of respondents (75%) are not using integrated motor-drives.
• On average, 65% of the AC drives respondents currently buy are off-the-shelf. The remainder are customized. 5 years from now, there is not much difference in the use of customized AC drives.
• 58% of respondents purchased AC Drives from Rockwell Automation in the past year. ABB was purchased by one-quarter of respondents. The most notable write-in among “Others” included Lenze/AC Tech accounting for 3% of the total responding.
• 19 AC drives was the most frequent number of AC drives purchase by each respondent in the last 12 months. $28,000 was the most frequent amount spent on AC drives purchased by each respondent in the last 12 months.
• Forty-five percent of respondents stated their spending on AC drives will increase in the next 12 months. 53% mentioned it will remain the same.

AC Adjustable- Speed Drives Product Research 2007

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Controller programming; Safety networks; Enclosure design; Power quality; Safety integrity levels; Increasing process efficiency
Additive manufacturing benefits; HMI and sensor tips; System integrator advice; Innovations from the industry
Robotic safety, collaboration, standards; DCS migration tips; IT/OT convergence; 2017 Control Engineering Salary and Career Survey
Featured articles highlight technologies that enable the Industrial Internet of Things, IIoT-related products and strategies to get data more easily to the user.
This article collection contains several articles on how automation and controls are helping human-machine interface (HMI) hardware and software advance.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me