BEI Engineering Resources for Motion Control Systems

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Motion Control Round-Up
News and Views from the World of Automation.
 
September, 2007
In This Issue
Check This Out
A Dose of Confidence
Can You Solve This?
Last Laugh
Join Our Mailing List!
Quick Links
Dear Reader,

Longtime readers of this newsletter will note that we are sporting a new look.  The autumnal equinox just passed, marking the change of seasons.  In the spirit of this change - it was time to refresh our style.  The content will continue to be interesting, challenging and entertaining and a little more readable with this new look.  So dig in, cozy up to a cup of hot chocolate, and read-on.
Check This Out
CST WebSite Many of you may be aware that BEI was purchased about two years ago by a company called Schneider Electric.  Since then, Schneider has organized the BEI companies along with other sensor companies (like Crydom, Crouzet and Kavlico) under an umbrella company called Custom Sensors and Technologies (CST).  You'll be hearing more about CST in the coming months through the trade press.  But, if you really want to keep on top of the latest information, products and activities of CST there's no better way than checking out their newsletter.  Simply click on this link and you'll be transported to a simple sign-up sheet and you're on your way.
A Dose of Confidence

 You gain strength, courage and confidence by every experience in which you really stop to look fear in the face. You are able to say to yourself, "I lived through this horror. I can take the next thing that comes along." You must do the thing you think you cannot do.

- Eleanor Roosevelt

Eleanor Roosevelt is best know as the first lady to US President Franklin Roosevelt. Born in New York, she was devoted to her husband's political career.  She found that notoriety gave her the opportunity to have her own voice.  She took the (at the time) precedent-setting step of hosting her own press conferences and became a strong supporter for Human Rights as well as an active member of the United Nations. Throughout her life she traveled extensively and was a prolific writer and lecturer.
 
To read more about Eleanor Roosevelt click this link.
Can You Solve This?
 

I usually pose an intellectual challenge in the form of an encoder-related troubleshooting question in this section.  This month I'd like to do something a little different.  A lot of our application calls start with "I need an encoder that does . . . . ." And we end up by building an encoder model number that will do the job for the application.  In this month's challenge, I'm going to start with an application and you try to guess which encoder model (or models) might be the right one to specify. I'll give you three scenarios and then I'll follow with the three recommendations. Ready?

1.  Automated finishing operation that uses a grinding tool.  Speed of traverse is very slow and controlled by an encoder. Slow speed control is important to impart a uniform finish.

2. Industrial A/C vector motor.  Encoder provides feedback for motor speed control. Compact installation and high temperature rating needed.

3. Video inspection system on water pipes with a manual feed on the camera boom.  Encoder on follower wheel to measure distance along the pipe. Outdoor operation and occasional submersion.

Are you ready to test your knowledge?

1. Model H25 encoder.  This has a dual preloaded bearing assembly and low runout to ensure precision.  Has the capability for high resolution through internal interpolation to ensure good control on slow speed operation.  Well sealed against particulates. Alternative model HS35.

2. Model HS35.  Compact installation - only 2" high - well sealed for industrial environments and can be rated up to 105 degrees C.  Electrical isolation against stray shaft currents caused by VFD operation. Alternative choice, HS25 (limited to 85 C operation).

3. Model ES20.  IP67 rated and can handle the wet environment.  Only requires moderate resolution.  Alternative model ES25.

Last Laugh

All relationships are fraught with little conversational traps - the proverbial "Does this dress make me look fat?" question for example.  Here's an interesting twist on a common one.

"What would you do if I died?" Correct answer: "Dearest love, in the event of your untimely demise, life would cease to have meaning for me and I would hurl myself under the front tires of the first delivery truck that came my way."  For those of you that think you might want to offer a more creative answer, read on.

"Why, dear, I would be extremely upset," said the husband. "Why do you ask such a question?"

"Would you remarry?" persevered the wife.

"No, of course not, dear" said the husband.

"Don't you like being married?" said the wife.

"Of course I do, dear" he said.

"Then why wouldn't you remarry?"

"Alright," said the husband, "I'd remarry."

"You would?" said the wife, looking vaguely hurt.

"Yes" said the husband.

"Would you sleep with her in our bed?" said the wife after a long pause.

"Well yes, I suppose I would," replied the husband.

"I see," said the wife indignantly. "And would you let her wear my old clothes?"

"I suppose, if she wanted to," said the husband.

"Really," said the wife icily. "And would you take down the pictures of me and replace them with pictures of her?"

"Yes. I think that would be the correct thing to do."

"Is that so?" said the wife, leaping to her feet. "And I suppose you'd let her play with my golf clubs, too."

"Of course not, dear," said the husband. "She is left-handed."

Hope this was an enjoyable and informative read for you and that you found our new look pleasing.  We're always available and willing to help you out with your technical questions and orders - so give us a call at 1-800-ENCODER or send me an email and we'll get you taken care of.
Thanks for reading,

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

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