AMC 20AVRA servo drive documentation

[dholzric]

Does anyone know anything about the 20AVRA servo drives from Advanced Motion Controls? I'm trying to get them working on my machine and not having much luck (it's my first servo machine so it may or may not be the drive.) I thought they were just an oem version of the 20a20 and have been trying to use those settings but i'm not sure if it's right. I'm trying to set it up in torque mode. If i adjust the offset pot i can get it to move in either direction.

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[Iron-Man]

Does anyone know anything about the 20AVRA servo drives from Advanced Motion Controls? I'm trying to get them working on my machine and not having much luck (it's my first servo machine so it may or may not be the drive.) I thought they were just an oem version of the 20a20 and have been trying to use those settings but i'm not sure if it's right. I'm trying to set it up in torque mode. If i adjust the offset pot i can get it to move in either direction.

These drives will need a +- 10V signal to work.

See page 59 of manual the INHIBIT will have to set"
Inhibit Input Check inhibit input for correct polarity (that is, pull-to-ground to inhibit or pull-to ground
to enable). Inhibit configuration depends either on the DIP switch settings or a 0 ohm
SMT resistor marked on the board. Also, keep in mind that noise on the inhibit line could be a
cause for a false inhibit signal being given to the drive."

Hope this helps,

Iron-Man

[dholzric]

I have it connected to a Mesa 7i77 card. I

[Iron-Man]

I have it connected to a Mesa 7i77 card. I

Were you able to get it functioning? I am using a similar set-up, with a converted Denford NovaTurn using, a AMC 16A20ACT-HSI for the spindle.
You can search for Denford NovaTurn to see some of my work.
Some pictures of your set-up may help.
Let me know if you want any additional help.

Iron-Man