Anilam 1100M Servo Bearings
12 May 2021 11:22 - 12 May 2021 12:14 #208616
by BigJohnT
Replied by BigJohnT on topic Anilam 1100M Servo Bearings
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
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
Replied by BigJohnT 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...
JT
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)
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
Replied by BigJohnT on topic Anilam 1100M Servo Bearings
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
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.
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.
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12 May 2021 21:37 #208657
by andypugh
Nothing to lose by trying a repair, if it is just a broken wire.
Replied by andypugh 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
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
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.
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
Epoxy encapsulated and multiple tiny wires are broken... pretty much impossible to repair with normal tools and hands.
JT
Replied by BigJohnT 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
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
Replied by BigJohnT on topic Anilam 1100M Servo Bearings
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
JT
Last edit: 06 Jun 2021 22:30 by BigJohnT.
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06 Jun 2021 22:51 #211374
by tommylight
Replied by tommylight on topic Anilam 1100M Servo Bearings
The lowest i saw was 9V/1K RPM while the highest was 22V/1K RPMI think the tacho put out a lot more than 10vdc but not sure.
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