analog 0-10 volt putting out 24v <resolved>

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jimw
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Re: analog 0-10 volt putting out 24v

Post by jimw »

Is that a clue? I said 24v because it varies hovering around 24v. Still not 10v.


Jim


tblough
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Re: analog 0-10 volt putting out 24v

Post by tblough »

It is 1/1000 of 24V. This is essentially 0V and what you would expect if the spindle was off. What voltages were you getting in the bench test?
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.


ShawnM
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Re: analog 0-10 volt putting out 24v

Post by ShawnM »

jimw wrote: Sat Apr 01, 2023 10:49 pm Is that a clue? I said 24v because it varies hovering around 24v. Still not 10v.

Jim
Yup, it’s a clue. Have a look at the manual for the meter and it’ll explain everything. It’s .0249 volts, not 24 .9 volts and still no where close to 10v. As noted by Tom it’s basically zero.
jimw post_ wrote: Sat Apr 01, 2023 2:30 pm I still think the problem is with the Acorn board.
The Acorn board is not the problem here. :D


Nigelo
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Re: analog 0-10 volt putting out 24v

Post by Nigelo »

Suggest you disconnect the black / white wires from Acorn and take a measurement with your meter being the ONLY connection to the analog terminals
Hope this helps
Nigel

"You can lead a horse to water but you cannot force it to drink"


Gary Campbell
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Re: analog 0-10 volt putting out 24v

Post by Gary Campbell »

Nigelo wrote: Sun Apr 02, 2023 11:47 am Suggest you disconnect the black / white wires from Acorn and take a measurement with your meter being the ONLY connection to the analog terminals
And make sure that you toggle the range button to read straight volts
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jimw
Posts: 17
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Re: analog 0-10 volt putting out 24v

Post by jimw »

To all who replied and everyone in general I apologize. I am truly a MORON. My meter was reading mv with nothing on it and switched to v for volts automagicly with current applied. I did not read the whole display and then read the manual which showed the little mv indicator. The worst part is I was a systems analyst/programmer with AT&T for thirty years and was always admonishing clients to read the screen the information is there. I was my own problem. Like Pogo said "we have met the enemy and he is us".

Thanks for all the help and my regrets for wasting your collective time,

Jim


Gary Campbell
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Re: analog 0-10 volt putting out 24v

Post by Gary Campbell »

No problems Jim. Not the first guy to not read the manual, fo sho won't be the last. We have gratuitously short memories here. 😀
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ShawnM
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Re: analog 0-10 volt putting out 24v

Post by ShawnM »

Just trying to point you in the right direction Jim, we’ve all made mistakes before. Get that VFD wired and let us know it’s working. You might need to install a .1 mfd cap across the Acorn output to smooth out the voltage if you have any frequency fluctuations from the VFD while it’s running.


jimw
Posts: 17
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Re: analog 0-10 volt putting out 24v

Post by jimw »

Thanks all. Got it wired forward/reverse and speed control. Seems to work fine. Thanks for all the help.

Jim


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