Upgrading 1984 Wells Index 820 with Allin1DC

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Chevy427z
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by Chevy427z »

Holy cow.

Thank you so much polar! I am blown away. All three "not" channels being tied together kind of makes sense as all three were wired with straight black wires, no tracers and we were puzzling about that in the beginning.

Awesome to see the register counting correctly, can't wait to see it on mine and then move forward.

Marty, trust me, he has my complete respect, trust, and my indebtedness.
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Chevy427z
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by Chevy427z »

Received my encoders from polar and was very excited to get them installed. Finally did a couple of days ago. Y and Z performed flawlessly. Still had an error in X and ran out of time.

Looked at it again tonight. Double and triple checked my cable and connections, then bench tested the encoder itself again as shown in polar's video way back in this thread.

First I swapped the cable with Y to see if the problem followed. The problem stayed at the encoder on X.

Each channel A, A/, B, and B/ showed as they should, one high, one low. When I rotated the shaft, I didn't get crisp fluctuations of low/high voltages like I did with the other encoders.

The message box showed errors in Z the whole time, which is odd because that one performed flawlessly. Incidentally, that's the one polar repaired. (Worked fine) (Thanks again for making it bolt back into the machine!).
Attachments
report_0008DC111213-0301212560_2021-06-09_18-19-30.zip
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20210609_175846.jpg
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20210609_175831.jpg
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20210609_175806.jpg
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polaraligned
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by polaraligned »

Chevy427z wrote: Wed Jun 09, 2021 6:43 pm Received my encoders from polar and was very excited to get them installed. Finally did a couple of days ago. Y and Z performed flawlessly. Still had an error in X and ran out of time.

Looked at it again tonight. Double and triple checked my cable and connections, then bench tested the encoder itself again as shown in polar's video way back in this thread.

First I swapped the cable with Y to see if the problem followed. The problem stayed at the encoder on X.

Each channel A, A/, B, and B/ showed as they should, one high, one low. When I rotated the shaft, I didn't get crisp fluctuations of low/high voltages like I did with the other encoders.

The message box showed errors in Z the whole time, which is odd because that one performed flawlessly. Incidentally, that's the one polar repaired. (Worked fine) (Thanks again for making it bolt back into the machine!).

I am a little confused. Y and Z are on the machine and working good?
X is the one not acting correctly?
Please explain your last sentence. None of these should have worked at all because they were not producing a differential output, is that correct?
What does the encoder screen show when you turn the shaft? any counting? the asterisk come up each rotation?
I did test on my machine as seen in the video and they were counting correctly.
What are the error messages?

One of them has a new output chip, the other I just rewired so you have the A/, B/ and the Z/ channels out to the back connector strip. I wonder if the original output chip is flakey in that one.
Chevy427z
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by Chevy427z »

Sorry for the confusion. I wondered if I was coming across ok or not.

Y and Z are on the machine and working fine. I have the one you repaired on Z and it's working fine. Some confusion might come from the fact that the one I have on X (in the pictures) is labeled Y. I didn't realize that until I uploaded the pics.

Regarding the error msgs on the screen. I uploaded my error report in the hopes that that would be obvious. It's hard to describe, probably should have taken a pic of that, too. The screen said that the Z axis encoder had an error (forget exactly what) which confused me because Z was working fine (the one you repaired). I may be misunderstanding what I'm seeing on the screen too, as far as how current the messages are and whether or not they are cleared when I reset the EMO.

The screen showed Y and Z counting up and down as I rotated the shafts and one full revolution gave me the expected roughly 4000 counts. X didn't do anything. The "load indicators" under each display turned red and stayed red, if that matters. I can get pics and videos later. Long day today.

I remember your video showing them all working. I'm not complaining or blaming. I appreciate everything you've done for me.

Considering just buying a replacement. If memory serves, Centroid doesn't sell the 1000 line encoders so I'd have to go elsewhere. I'll take a recommendation if you have one. Or should I just bite the bullet and go for three new 2000 line? I know Marty would be happy if I went that route. LOL
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polaraligned
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by polaraligned »

I don't understand why the load indicators would go red and stay red. The Allinone should trip the estop if that happens.

Is the encoder that I put into the old housing working? I did not fully test that one but I don't normally keep bad parts laying around. I removed it from a servo that had a shorted winding and was overheating.

Screen shots or video of what is going on would be helpful.
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by martyscncgarage »

"X,Y,Z idling too high: Releasing power", likely the motors still need to be tuned. You can try and run Autotune
BUT
The Z axis differential error does need to be fixed though.

Marty


From the Error Logs (Excerpt):
(1) 06-09-2021 17:30:02 CNC12-D Mill v4.20
(4) 06-09-2021 17:30:02 2099 Message Cleared
(1) 06-09-2021 17:30:02 412 Z axis(3) encoder differential error
(4) 06-09-2021 17:30:02 2099 Message Cleared
(1) 06-09-2021 17:31:37 Creating report...
(1) 06-09-2021 17:31:45 Saved report to C:\cncm\Error reports\report_0008DC111213-0301212560_2021-06-09_17-31-37.zip
(1) 06-09-2021 17:32:14 412 Z axis(3) encoder differential error
(1) 06-09-2021 17:32:49 406 Emergency stop detected
(1) 06-09-2021 17:34:26 Exiting CNC and shutting down machine (68)
(1) 06-09-2021 18:07:44 199 CNC Started
(1) 06-09-2021 18:07:47 406 Emergency stop detected
(1) 06-09-2021 18:07:48 CNC12-D Mill v4.20
(4) 06-09-2021 18:07:48 2099 Message Cleared
(1) 06-09-2021 18:07:48 412 Z axis(3) encoder differential error
(4) 06-09-2021 18:07:48 2099 Message Cleared
(1) 06-09-2021 18:08:19 406 Emergency stop detected
(1) 06-09-2021 18:11:53 X,Y,Z idling too high: Releasing power
(1) 06-09-2021 18:19:31 Creating report...
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
Chevy427z
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by Chevy427z »

polaraligned wrote: Wed Jun 09, 2021 8:42 pm I don't understand why the load indicators would go red and stay red. The Allinone should trip the estop if that happens.

Is the encoder that I put into the old housing working? I did not fully test that one but I don't normally keep bad parts laying around. I removed it from a servo that had a shorted winding and was overheating.

Screen shots or video of what is going on would be helpful.
I see where the confusion is now. You repaired two of them. The one you put in the old housing is working fine (Z), but I don't understand why it's throwing an error. Marty says that "The Z axis differential error does need to be fixed though."

Does "Autotune" need the servo motors wired in? I haven't gotten that far yet.

I'll get better pics/videos when time allows.
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polaraligned
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by polaraligned »

Chevy427z wrote: Thu Jun 10, 2021 4:33 am
I see where the confusion is now. You repaired two of them. The one you put in the old housing is working fine (Z), but I don't understand why it's throwing an error. Marty says that "The Z axis differential error does need to be fixed though."

Does "Autotune" need the servo motors wired in? I haven't gotten that far yet.

I'll get better pics/videos when time allows.

So the Z is the spare that I put in your old housing, correct? You had to wire to the pigtail on it so make sure the connections are good. If it keeps throwing differential errors, it may be bad. That was the only one I did not connect to my machine for a final test.

You have yet to wire the motors, so I do not understand why you are getting the "idling too high" messages. There should be no current draw for the drive to sense. Is that correct that the motors are still not wired in?
polaraligned
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by polaraligned »

polaraligned wrote: Thu Jun 10, 2021 6:53 am
Chevy427z wrote: Thu Jun 10, 2021 4:33 am
I see where the confusion is now. You repaired two of them. The one you put in the old housing is working fine (Z), but I don't understand why it's throwing an error. Marty says that "The Z axis differential error does need to be fixed though."

Does "Autotune" need the servo motors wired in? I haven't gotten that far yet.

I'll get better pics/videos when time allows.


So the Z is the spare that I put in your old housing, correct? You had to wire to the pigtail on it so make sure the connections are good. If it keeps throwing differential errors, it may be bad. That was the only one I did not connect to my machine for a final test.

You have yet to wire the motors, so I do not understand why you are getting the "idling too high" messages. There should be no current draw for the drive to sense. Is that correct that the motors are still not wired in?

Autotune need the motors and connected and attached to the machine as it senses friction and drag on the axis and the power needed to move the axis.

Again, without motors wired in you should not be getting any of those high idle current messages.

The X axis you said is not working is not throwing an error. Does it count on the encoder screen?
Chevy427z
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Re: Upgrading 1984 Wells Index 820 with Allin1DC

Post by Chevy427z »

I checked and double checked my connections when wiring the pig tail on the one you mounted in my old housing, which is on the Z axis. I soldered them knowing that I would have to redo it when I actually mount the wires in the machine. They are just draped over it now for ease of testing. I put heat shrink tube on the joints to protect them. I'll get pics of that later, too.

You said "Autotune need the motors and connected and attached to the machine as it senses friction and drag on the axis and the power needed to move the axis.". That's what I figured. Marty keeps asking me about things that I haven't gotten to in the installation process yet.

I'll double and triple check everything again when time allows.
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