HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 2/2
TJ McDermott
User Rank
Blogger
Re: Future Pricing Trends
TJ McDermott   2/6/2012 9:05:48 AM
NO RATINGS
The purchase price is declining, and safety PLC options are even more attractive at installation because the long cable home runs get decreased.  Instead of having all safety device cables return to the central location where the safety relays reside, the devices can land locally at distributed Ethernet IO locations which communicate via regular Ethernet cable.  The Ethernet IO cable already must be pulled back to the central PLC; this gives a significant cost savings for cabling and installation time.

The drawback to SafetyPLC option is the complexity for post-acceptance troubleshooting.  The skill level required to maintain and troubleshoot such a system is much higher.  Trouble-shooting a system using regular safety relays can be much simpler.

apresher
User Rank
Blogger
Future Pricing Trends
apresher   2/6/2012 8:56:46 AM
NO RATINGS
Interesting piece, TJ.  With safety becoming more an integral part of the integrated architecture/product line-ups for many automation control vendors, it will be interesting to see how the pricing trends play out over the next few years. Would expect that the premium will be heading downward but it's impossible to know how fast.

TJ McDermott
User Rank
Blogger
Re: Hands-on engineering
TJ McDermott   2/6/2012 8:46:53 AM
NO RATINGS
Beth, I have to write a correction here.  I realize I neglected to SUBTRACT the cost of the standard PLC from my safety PLC figure (the safety PLC performs both the safety function and the regular PLC function in one unit and thus replaces the standard PLC).

This would adjust the total safety PLC cost down to around $7000.  The safety PLC decision becomes even more attractive for the next system.

Beth Stackpole
User Rank
Blogger
Hands-on engineering
Beth Stackpole   2/6/2012 7:15:13 AM
NO RATINGS
I love this real-world example of how one simple design decision and component change can have real impact on the cost of the BOM and the ultimate performance of the product. This is a classic example of what happens every day in design iteration. It really shines a spotlight on how a more holistic view and big-picture thinking can really have impact on design results not to mention, costs. Thanks for sharing, TJ.

<<  <  Page 2/2


Partner Zone
Latest Analysis
Get a load of these strange product designs. What's in the water these design engineers are drinking?
The Dutch are known for their love of bicycling, and they’ve also long been early adopters of green-energy and smart-city technologies. So it seems fitting that a town in which painter Vincent van Gogh once lived has given him a very Dutch-like tribute -- a bike path lit by a special smart paint in the style of the artist's “Starry Night” painting.
Cal Poly students use 3D printing to take flight -- and pass their class.
Celebrity engineer Grant Imahara will host a series of “webisodes” that will examine new technology and innovation from an engineer’s point of view.
The UX Italia video contest recognizes Italian machinery, technology, and other experience solutions that have contributed meaningful improvements to people’s lives and production processes. If you submit a three-minute video showcasing how the quality of Italian machinery's User eXperience is essential to your company's success, you just may win a trip to Italy.
More:Blogs|News
Design News Webinar Series
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
12/11/2014 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.
Nov 17 - 21, Analog Design for the Digital World
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


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.
Last Archived Class
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service