Re:BEI encoder replacement

I respectfully disagree. If lighning strikes the power line and the machines see a surge sure a lot of things will be damaged. Vibration on the BEI encoder is not the reason it failed . It failed because the machine propably had 40,000 hrs.
The owner has a choice. My method which is a five minute fix to unsolder and replace a $1.60 bulb that the manufacture selected to work on his machine and know it will work and will probnably last another 40,000 hrs. Or, to figure out which LED is best, which one will fit, what current limiting resistor to use, how to orientate the led, how to mount it so that it will work with the encoder disk and read head and HOPE that it will work. And most importantly since the orignator did know what to do it seems much more practical to simply replace the bulb.
Dan
dmauch@...
www.camtronics-cnc.com

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Andrewdavid.mathison" <andrewdavid.mathison@...> wrote:
>
> In a vibrating environment, that 40,000 hours could easily become less than 500 hours. Could even become 1 hour in a worst case scenario...
>
> LEDs (and dropper resistors) are so cheap and are VERY insensitive to quite severe vibration.
>
> The tiny amount of extra work will be really well paid back, costs are almost nothing......
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> But each must decide for himself what he does in such situations.......all we are doing here is showing everyone the various possibilities....
>
> .....but don't forget, lamps are slowly disappearing off this planet, in 10 years you might have real trouble finding one.....or even earlier!
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> Greetings from
>
> Andy Mathison
>
> [Non-text portions of this message have been removed]
>