Centroid Community CNC Support Forum

I have been having trouble with my Acorn board, specifically the spindle voltage out. I am getting around 1.2v out with the spindle stopped. When running spindle bench test I get like 1.4v on stage 1, if I enter 1.5 it is right on for the remaining stages. Voltages are read right at the terminal on ...

more steps is not better just like making smaller and smaller g code vectors is not better

Machine sweet spots for steps per rev and overall turns ratios.

Milling machines 3200 to 8000 steps per rev. , overall turns ratio 5 to 10

Lathes 3200 to 8000 steps per rev. , overall turns ratio 5 to 10 ...

All-righty then. Made the last of the headway on mechanical setup today. I had an issue with my limit switches being physically connected wrong. I had 3 of them wired NO instead of NC. That is fixed now and the last of the belt tensoners is installed.... Now comes the fun part. Setting up the ...

I am retrofitting a Grizzly mill using Centroid Acorn. Spindle Bench test went fine, got everything up and running minus the spindle control. Started working on that with a KBSI-240D, was getting 9.99 volts from Acorn then something happened (maybe some smoke left?) Now, everything seems to work ...

So, your Lenze drive is a DC spindle drive.
DO you know if it has built in SIGNAL Isolation?
It is not a standard VFD.

IF your Acorn will no longer pass the spindle bench test, then my guess is that you blew the Spindle Analog Output on Acorn.

Please explain with a sketch how you wired Acorn to ...