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are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Tue Feb 16, 2021 12:26 pm
by balbino
Is there anywhere to find if they are supported or does anyone know the answer.
Thanks

Re: are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Tue Feb 16, 2021 1:44 pm
by tblough
Post a link or a pdf of the manual and we'll take a look.

Re: are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Tue Feb 16, 2021 1:51 pm
by cncsnw
As Tom advises, see if you can locate the Heidenhain documentation for them.

Newer Heidenhain scales most commonly have "1V P-P" output -- presumably 1V sine and cosine wave forms. Some older ones had sine and cosine current signals at some small number of mA. Some Heidenhain scales natively output what Heidenhain calls "TTL", which is the 5V differential quadrature square wave that Oak requires.

Heidenhain offers signal converters to convert the sine/cosine signals to TTL square waves. If I understand the nomenclature, "EXE" units are for the current-mode scales, and "IBV" units are for the voltage-mode (1V P-P) scales. So, if you have an EXE or IBV box that matches your scales, you are probably good to go.

I assume, here, that you are looking at using it for secondary feedback or manual-axis feedback, and that you have suitable rotary encoders on your servo motors.

Re: are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Wed Feb 17, 2021 10:52 am
by balbino
https://www.heidenhain.com/fileadmin/pd ... _Tools.pdf

for some reason I am unable to make it a link. But if you copy and paste the above it should bring you to the page you need. The page I think you need is page 39.

Thanks

Re: are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Wed Feb 17, 2021 11:05 am
by martyscncgarage
This topic was moved from the Acorn forum here where it is more topical.

Re: are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Wed Feb 17, 2021 11:21 am
by tblough
Sorry, but I could not locate the LS404 in that catalog link.

Re: are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Wed Feb 17, 2021 3:40 pm
by cncsnw
If you go to:
https://www.heidenhain.com/en_US/docume ... /infobase/
... and enter "LS 404C" in the search box, a list of products comes up. That list indicates that LS404C scales have an 11μA P-P current-mode output.

If they are in good working order, you should be able to use them. You would need to install an EXE-series interface box for each scale, such as the EXE 101.
See https://www.heidenhain.com/en_US/produc ... ectronics/

Re: are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Fri Feb 19, 2021 10:38 am
by balbino
IMG_1603.jpg
Will the oak board support this servo.

Re: are Heidenhain Ls404 glass scales supported on Oak Board

Posted: Fri Feb 19, 2021 10:39 am
by balbino
Hi,
CNCSNW thank you for the help above. I really appreciate it.

Thanks