News & Events.

exida Presenting and Exhibiting at Motor Drives and Systems 2018


  January 24, 2018

exida will be presenting and exhibiting at the Motor Drives and Systems 2018 on February 8-9, 2018 in Orlando, FL.  Stop by booth 119 and say hello.  exida Senior Safety Engineer Ted Stewart will be presenting a paper entitled Failure Data for Motor Controllers in the Process Safety Industry.

Motor & Drive Systems Conference 2018 is a leading global event focused on the latest technical advancements impacting the design and integration of motor, drive systems and motion control for manufacturing, industrial and packaging, as well as automotive/EV applications. Conference topics will include improving motor efficiency and reliability, regulatory and safety issues, testing standards and programs, emerging and high growth applications, developing and pairing motor & drive systems, and improving loss prediction and calculation.


February 8th, 2018 

10:30 AM - Session Room A

Ted Stewart

Failure Data for Motor Controllers in the Process Safety Industry

In the process industry, many safety functions include a pump, motor, or other electrical device. To bring a process to a safe state the devices that control these electric elements need to work correctly. Motor contactors, motor starts, and safety torque off functions are commonly used for these applications. A recent study of over 43,300 safety instrumented functions revealed that 26% of final elements are electric final elements. The wide usage of electric final elements confirms the importance of more extensive review of this category of devices. While the failure modes and mechanisms in machinery applications have been study for years, there is less data and experience to draw on. When dealing with a lack of sufficient field data a well thought out and documented methodology can help fill the void. This paper will discuss market research showing a need for low demand failure data for motor controllers, propose a methodology to fill in the missing information, review several reference systems to demonstrate how to design compliant safety functions.