Centroid Oak glass scales

[WesM]

My work is looking into purchasing an ATrump AV32 with centroid oak control. The machine does not come with glass scales, so we are thinking about having them added for closed loop feedback for motion control (not just DRO readout) after we have the machine in house.

I am not very familiar with the centroid oak. Would we need the encoder/scale expansion board to add scales?

Are there any recommended scales for this? I see specs regarding A/B differential quadrature (W/ Index Pulses), so thats a given.

Would Acu-Rite SENC 150 1um scales be acceptable? Looking for something as plug and play with the control as possible.

[centroid467]

I don't know the exact specifics of the wiring but considering the quill has "auto-feed", I would suspect that they used all four drive axes of the base Oak. I'm also assuming that they used one of the auxiliary encoder ports for a spindle encoder. Whether or not they used the WMPG or wired MPG or their own product for the "portable hand wheel", you'd still be down several encoder ports.

X, Y, Z, quill, and spindle drives use up five out of seven encoder ports. If they used our wired MPG or something custom then that takes away another port. So, for scales on X, Y, and Z, you'd need one or two more encoder inputs.

I would recommend the encoder expansion board for this application.


Yes, those scales should work well. You'll probably need to change the pinout on the DE9 plugs.