HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Guest Blogs

Optically Isolated Relays Can Handle Industrial Systems, Too

NO RATINGS
View Comments: Threaded|Newest First|Oldest First
naperlou
User Rank
Blogger
Go solid state
naperlou   11/1/2012 11:57:31 AM
NO RATINGS
Whenever a solid state component is available it will generally be superior to an electromechanical one in most modern applications.  I ran into this years ago with amplifiers for communications for satellites.  Typically klystron tubes were used.  Advances in solid state amplifiers allowed the replacement of these in many cases.  They were more reliable, lighter and used less power.  I see the same thing with this class of relay.  They also, as is pointed out, avoid some of the pitfalls of electromechanical relays.  There was an article in Design News about a problem with such a relay recently. 

akwaman
User Rank
Gold
Re: Go solid state
akwaman   11/2/2012 10:21:32 AM
NO RATINGS
 I couldn't agree with you more, naperlou. Solid state is the way to go whenever is makes sense, as far as I'm concerned. In noise sensitive data aquisition matters, electromechanical relays can introduce unwanted noise into a system.  These kinds of optical relay technology has many uses.  Of course the obious power savings is a plus as is the reliability factor.

mrdon
User Rank
Platinum
Re: Go solid state
mrdon   11/3/2012 11:09:23 PM
NO RATINGS
akwaman, Nicely explained, I agree totally with all the points you've made. I wanted to use SSRs(solid state relays) in wireless Hunter Fan Ceiling Controls but management was against it because of cost. As you discussed in your post, yes the intial cost investment is somewhat pricey but the ROI would have been substantial in terms of reduced customer warranty claims due to failing electromechanical relays. I'm definitely will be sharing this article with my Control Systems class at ITT Tech.

Partner Zone
More Blogs from Guest Blogs
Transient-voltage-suppression diode technology eliminates surges and enhances vehicle safety.
Industrial workplaces are governed by OSHA rules, but this isn’t to say that rules are always followed. While injuries happen on production floors for a variety of reasons, of the top 10 OSHA rules that are most often ignored in industrial settings, two directly involve machine design: lockout/tagout procedures (LO/TO) and machine guarding.
Load dump occurs when a discharged battery is disconnected while the alternator is generating current and other loads remain on the alternator circuit. If left alone, the electrical spikes and transients will be transmitted along the power line, leading to malfunctions in individual electronics/sensors or permanent damage to the vehicle’s electronic system. Bottom line: An uncontrolled load dump threatens the overall safety and reliability of the vehicle.
While risk management sounds like one activity, in order to be conducted effectively, it must be broken down into three sub-components: risk assessment, risk monitoring, and response planning.
While many larger companies are still reluctant to rely on wireless networks to transmit important information in industrial settings, there is an increasing acceptance rate of the newer, more robust wireless options that are now available.
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Mar 30 - Apr3, Getting Hands-On with Cypress’ PSoC
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service