BEI Engineering Resources for Motion Control Systems

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) Motion Control Round-up )
 News and Views from the World of Automation November 2004 
In This Issue
  • Size Does Matter
  • The Real Definitions
  • Can You Solve This?
  • Seeing is Believing
  • Your Opinion Matters

  • The Holiday Season is on us. It's a time of families, parties and celebration. It's also a time for end-of-the year budget planning, finishing up projects and getting ready for the next year.

    It's a busy time, so take a minute out to relax and enjoy this month's newsletter. We have a new product to introduce, our monthly brain-teaser and some fun links for you to explore. As always, send along your comments and suggestions - we enjoy hearing from you.

    Size Does Matter

    Sometimes bigger really is better. Take a look at BEI's latest Hollow Shaft encoder. It features an outside diameter of 4.5 inches [114 mm]and will handle shafts of up to 1 - 7/8 inches [47mm] in diameter.

    This encoder also carries the same sealing and tether mechanisms as the smaller HS35 and HS25 designs and is environmentally rated to IP65. The bigger design also gives us room for an added feature: the ability to provide dual, isolated outputs.

    This is the perfect solution if you need to provide a signal to two separate controllers simultaneously. Each signal is provided by a separate, isolated set of electronics internal to the encoder.

    With the larger bore, IP65 rating and dual output capability the HS45 is just the ticket for larger motors, systems requiring synchronized outputs, or other places where a dual redundant output may be needed. Just click on the link below to download a PDF of this encoder.

    NEW Large Bore Hollow Shaft Encoder . . .

    The Real Definitions
    Acquaintance, n.: A person whom we know well enough to borrow from, but not well enough to lend to.

    Cabbage: A familiar kitchen-garden vegetable about as large and wise as a man's head.

    Politics, n. Strife of interests masquerading as a contest of principles.

    These wry definitions come from the mind of one Ambrose Bierce. Born in the mid 1800's in Ohio, he fought for the Union in the US Civil War of 1861-1865. He grew to be a powerful journalistic force in the American West and was best known for his clever and somewhat macabre stories and his twelve volume satire known as the "Devil's Dictionary". For more definitions click on the link, below.

    Link to Ambrose Bierce Quotes. . . »

    Can You Solve This?
    One day our application specialist picked up the phone to find an unhappy customer at the end of the line. It seems their encoders were failing on their printing press and a lot of scrap paper was being sent to the trash bin!

    With a little probing it was discovered that the encoders had recently been removed and replaced to accomodate a modification to their printing system to improve throughput.

    Once the modification was complete, the encoders were reinstalled and as they ramped up the printing speed, the encoders started failing. What was going on?

    Answer: When they increased the throughput of the system they neglected to take into account the higher bandwith requirements on the encoders. They were exceeding the designed bandwidth and at high speed the counter started missing counts. Once they understood the problem we were able to offer several solutions to get their system back in line.

    Link to Applications Assistance. . . »

    Seeing is Believing
    Here's a bit of escapist fun to brighten your day.

    Optical illusions can be confusing, entertaining and really make you doubt your sanity sometimes - that's why we like them. I found this curious link the other day and couldn't resist sending it along in this month's newsletter.

    Enjoy the site link, below. Some of the illusions require veiwing software in order to operate properly but most of the ones that I tried worked perfectly fine without any special set-ups to my browser. Have fun and forward these to your friends.

    Optical Illusions for you . . . »

    Your Opinion Matters
    If you can still see straight after those illusions, let me know. We're always pleased to hear your requests, opinions, problems or comments. So send along a note anytime.

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  • More about BEI's Industrial Encoder Division

  •     email: Scott Orlosky
        voice: 805-968-0782
         web: http://www.beiied.com

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