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Equipment Discussions >> Mounts

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Mary B
Vendor - Echo Astronomy and Electronics
*****

Reged: 05/21/10

Loc: Minnesota
CG5asgt dec motor encoder assembly part#
      #6062072 - 09/04/13 02:47 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.


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RTLR 12
Post Laureate
*****

Reged: 12/04/08

Loc: The Great Pacific NorthWest
Re: CG5asgt dec motor encoder assembly part# new [Re: Mary B]
      #6062085 - 09/04/13 03:12 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


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fetoma
Carpal Tunnel
*****

Reged: 09/26/06

Loc: Southern New Jersey
Re: CG5asgt dec motor encoder assembly part# new [Re: RTLR 12]
      #6062770 - 09/04/13 02:08 PM

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



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Mary B
Vendor - Echo Astronomy and Electronics
*****

Reged: 05/21/10

Loc: Minnesota
Re: CG5asgt dec motor encoder assembly part# new [Re: fetoma]
      #6063094 - 09/04/13 05:35 PM

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

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RTLR 12
Post Laureate
*****

Reged: 12/04/08

Loc: The Great Pacific NorthWest
Re: CG5asgt dec motor encoder assembly part# new [Re: Mary B]
      #6063248 - 09/04/13 07:10 PM

What part # did you order Mary?

Stan


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Mary B
Vendor - Echo Astronomy and Electronics
*****

Reged: 05/21/10

Loc: Minnesota
Re: CG5asgt dec motor encoder assembly part# new [Re: RTLR 12]
      #6063282 - 09/04/13 07:38 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


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fetoma
Carpal Tunnel
*****

Reged: 09/26/06

Loc: Southern New Jersey
Re: CG5asgt dec motor encoder assembly part# new [Re: Mary B]
      #6063501 - 09/04/13 10:35 PM

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

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Mary B
Vendor - Echo Astronomy and Electronics
*****

Reged: 05/21/10

Loc: Minnesota
Re: CG5asgt dec motor encoder assembly part# new [Re: fetoma]
      #6064771 - 09/05/13 04:24 PM

Ugh I was trying to forget

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Mary B
Vendor - Echo Astronomy and Electronics
*****

Reged: 05/21/10

Loc: Minnesota
Re: CG5asgt dec motor encoder assembly part# new [Re: Mary B]
      #6067218 - 09/07/13 02:50 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.



Edited by Mary B (09/07/13 02:51 AM)


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