Encoder Help with Mesa 7i96

tommylight
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17 Feb 2022 09:57 #235112 by tommylight

Replied by tommylight on topic Encoder Help with Mesa 7i96

Do you have everything grounded properly?

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kbec
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17 Feb 2022 14:47 #235139 by kbec

Replied by kbec on topic Encoder Help with Mesa 7i96

I think that is my problem. The encoder is to a 24v supply, and the board is 5v. I am fairly certain I can tie the grounds into one another, once I do that I will test again.

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tommylight
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17 Feb 2022 14:52 #235140 by tommylight

Replied by tommylight on topic Encoder Help with Mesa 7i96

You can not use a 24V encoder on a board with 5V inputs, that will for sure fry the inputs.
In such cases use of voltage dividers on the encoder outputs is required.

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kbec
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17 Feb 2022 15:24 #235145 by kbec

Replied by kbec on topic Encoder Help with Mesa 7i96

I see the encoder has a ground pin, I am going to try and hook that to my 24v ground. I am thinking that is the issue.

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kbec
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17 Feb 2022 15:28 #235146 by kbec

Replied by kbec on topic Encoder Help with Mesa 7i96

The encoder itself is hooked to 24v power supply. I have the output down to the proper voltage, it is just now my ground is not tied in correctly.

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jmelson
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17 Feb 2022 17:12 #235147 by jmelson

Replied by jmelson on topic Encoder Help with Mesa 7i96

kbec wrote:
I think that is my problem. The encoder is to a 24v supply, and the board is 5v. I am fairly certain I can tie the grounds into one another, once I do that I will test again.

Yes, if the signals go to inputs that have a different ground reference, you MUST tie the grounds together.
Jon
[/quote]

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kbec
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17 Feb 2022 18:10 #235154 by kbec

Replied by kbec on topic Encoder Help with Mesa 7i96

I fixed it by wiring the ground to the pin on the board for encoder ground. Now I am getting signals and they are off, but I am seeing a speed show up and the A,B and index pins changing.

Thanks to all of you for your help.

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