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How to avoid a Hindenburg-level USB meltdown in harsh industrial environments

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CMathas
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
CMathas   6/19/2012 2:32:56 PM
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And I'm looking forward to publishing them here.

bwf
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
bwf   6/19/2012 1:34:52 PM
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Hi All - Thanks for all the great comments. B&B does make an USB isolator, but as was pointed out, the speed is limited to 12 Mbps. This is because isolation chip technology has is not capable of high speed data rates provided by USB 2.0 and USB 3.0. Not to worry though, we are actively researching this and I'm confident our engineers will solve this problem. During my travels, I saw many great applicatons of USB "in the field" and the response to this article shows that the technology is moving out of the office. I'm looking forward to writing some applications based articles to demonstrate the unlimited potential for Industrial USB.

I_B_GREEN
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
I_B_GREEN   6/18/2012 4:32:49 PM
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Why not add a hot swap feature to USB power. Even just a resistive leader pin. USB 3.14? :) Is it safe? USB isolator dongle? Does anybody make one?

jonnydoin
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
jonnydoin   6/18/2012 10:49:37 AM
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Brad, the third photo (BBUSB12.gif)shows burnout of an isolated barrier. One can see the 3 opto isolators and the HALO transformer. That is a 300mils barrier with isolated DC/DC, that should withstand at least 2.5KV of isolation. This is no ESD or ground loop. This kind of damage can only be produced by lightning strike-class discharges. - Jonny

Brad@B&B
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
Brad@B&B   6/15/2012 7:24:24 PM
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Brian is busy traveling but certainly appreciates the compliments. He lives and breathes this stuff as do all of us at B&B.

Brad@B&B
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
Brad@B&B   6/15/2012 7:21:53 PM
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I believe Brian may have them mounted on his wall at home. Thanks for commenting:)

Brad@B&B
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
Brad@B&B   6/15/2012 7:17:56 PM
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All good points and thanks for commenting on Brian's article.

Brad@B&B
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
Brad@B&B   6/15/2012 7:13:10 PM
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I can understand the commotion over the photographs. They are from B&B’s collection of “customer disasters” sent to us over the years – and they are not all related to USB. I have seen many communication boards which show absolutely no sign of damage after a lightning strike but are dead all the same. Brian purposely wanted to illustrate the worst of the worst to drive home the point that isolation can be life saver.

CMathas
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
CMathas   6/15/2012 3:01:59 PM
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Good solution - anyone else have a work-around like this?

CMathas
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re: How to avoid a Hindenburg-level USB meltdown in harsh industrial environments
CMathas   6/15/2012 3:01:28 PM
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Wow, now that you've commented once, I expect you'll return often and continue to speak up. I am so glad you enjoyed the article. My goal is to post content that is both informative and enjoyable to read! Thanks for commenting.

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