Anilam 1100M Servo Bearings

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12 May 2021 11:22 - 12 May 2021 12:14 #208616 by BigJohnT
No, I didn't disconnect any wires during the disassembly. I took the tacho off and cleaned the commutator but have not tried it yet.

Edit: I might have damaged the windings on the tacho commutator when I pulled it off...

JT
Last edit: 12 May 2021 12:14 by BigJohnT.

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12 May 2021 17:50 #208638 by BigJohnT
Yep, I screwed up pulling the tacho winding off like I did. Looking with the microscope I've damaged some wires...

JT

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12 May 2021 18:45 #208640 by PCW
Replied by PCW on topic Anilam 1100M Servo Bearings
if you have a spare analog output channel you may be able to
Simulate the tachometer

(you may have to adjust the tachometer input gain on the drive)

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12 May 2021 20:56 #208649 by BigJohnT
I think I found a servo rebuild place that may have one... I'm hoping.

If that falls through are you talking about using one of the analog outs from the 7i77?

JT

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12 May 2021 21:35 - 12 May 2021 21:35 #208655 by PCW
Replied by PCW on topic Anilam 1100M Servo Bearings
Yes, by feeding the encoder velocity signal into an analog output, you can
simulate a tachometer (voltage proportional to velocity)

The drive may need adjustment because the 7I77 output is limited
to +-10V and sometimes tachometers output more than 10V at full speed.
The drive should have a tachometer gain control to adjust for this.
Last edit: 12 May 2021 21:35 by PCW.
The following user(s) said Thank You: BigJohnT, OT-CNC

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12 May 2021 21:37 #208657 by andypugh

Yep, I screwed up pulling the tacho winding off like I did. Looking with the microscope I've damaged some wires


Nothing to lose by trying a repair, if it is just a broken wire.

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14 May 2021 01:52 #208776 by OT-CNC
Replied by OT-CNC on topic Anilam 1100M Servo Bearings

Yep, I screwed up pulling the tacho winding off like I did. Looking with the microscope I've damaged some wires...


That sucks. Sorry to hear that. Reminds me of when I tried pulling the encoder off the anilam Z drive. Cracked the glass encoder wheel.

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14 May 2021 12:05 #208798 by BigJohnT

Yep, I screwed up pulling the tacho winding off like I did. Looking with the microscope I've damaged some wires


Nothing to lose by trying a repair, if it is just a broken wire.


Epoxy encapsulated and multiple tiny wires are broken... pretty much impossible to repair with normal tools and hands.

JT

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06 Jun 2021 22:28 - 06 Jun 2021 22:30 #211363 by BigJohnT
I found a tacho for $480! then I found a complete servo for $200, should be here tomorrow... I did try a few times to use encoder velocity out to the driver board but didn't have any success, I think the tacho put out a lot more than 10vdc but not sure. I saw what I thought might be an adjustment but was a bit nervous to turn it as it might break too.

JT
Last edit: 06 Jun 2021 22:30 by BigJohnT.

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06 Jun 2021 22:51 #211374 by tommylight

I think the tacho put out a lot more than 10vdc but not sure.

The lowest i saw was 9V/1K RPM while the highest was 22V/1K RPM

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