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CG5asgt dec motor encoder assembly part#

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8 replies to this topic

#1 Mary B

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Posted 04 September 2013 - 01:47 AM

Anyone know the part number for just the encoder? Or have one for sale? Celestron wants $132 for a new motor and encoder assembly.

Yes it is bad, scoped the output and nothing.

#2 RTLR 12

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Posted 04 September 2013 - 02:12 AM

Celestron does not sell the encoder separately. The encoders were made by US Digital in Vancouver, Wa (#EP-4) and they were supplying them up until about 4 months, but they are no longer supporting them.(Discontinued) Apparently Celestron has another source for encoders now.

The specs for the encoder are; 256 cpr with .091" (2.3mm) shaft size.

This is the most common reason for motor "run on". Any small voltage spike and the encoders fail. I have purchased used motors for much less than the new Celestron price. Celestron use to sell the motors for $29, but that was was a while ago. They raised the price from $29 to $132 over night about 2 years ago with no explanation.

Stan

#3 fetoma

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Posted 04 September 2013 - 01:08 PM

"They raised the price from $29 to $132 over night about 2 years ago with no explanation."

:flame:

#4 Mary B

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Posted 04 September 2013 - 04:35 PM

From digging at part numbers it looks like this one is 180cpr, I have the optical chip ordered from digikey to try.

#5 RTLR 12

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Posted 04 September 2013 - 06:10 PM

What part # did you order Mary?

Stan

#6 Mary B

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Posted 04 September 2013 - 06:38 PM

AEDR-8300-1Q from digi key part number 516-2182-ND

ENCODER REFL OPT 2CH 180LPI 5V

I should have it by Friday, maybe even tomorrow so I will get it in right away. Surface mount so not going to be an easy swap

#7 fetoma

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Posted 04 September 2013 - 09:35 PM

While I'm here...Happy Birthday Mary! :thewave:

#8 Mary B

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Posted 05 September 2013 - 03:24 PM

Ugh I was trying to forget :lol:

#9 Mary B

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Posted 07 September 2013 - 01:50 AM

Well that restored dec function. This is the board version I used it on. Not fun to solder back in without surface mount tools.

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