Help! The X, Y, and Z axis have a mind of their own

[ednisley]

@AlMess

No longer think its the controller since it will work on and OMTECH AF1630-70

That’s key to thinking it’s a configuration issue.

@AlMess

it will ignore the limit switches when drifting

This may point to having the distance/step values totally incorrect, along with the various speeds.

A post on figuring the correct distance/step, for which the 6445 apparently uses µm, rather than millimeters:

Z Axis Stepper Calibration

That’s the usual outcome, but if one half-winding is reversed it will behave poorly. Given that you observed “motor stalls/ squeals”, it’s worthwhile to verify the absolute basics. It works the other way: a smaller step size (more steps/rev) requires less torque to move the platform during each step. Think of it as pulling a car up a hill with a comealong: it’s easier to move it one inch per click than one foot per click. No. Set it to 10 k, because that’s what the good folks at OMTech seem…

If you typed in a value in millimeters and the controller interprets it as microns, then every step will be 1/1000 whatever you think.

Verify that, then set the max speed to 300 mm/s and the max acceleration to 3000 mm/s². Set the homing speeds to 100 mm/s. All of those can be tuned later.

Then it should trundle along at a more reasonable rate when you first turn it on, whereupon you can get the homing direction / switches / speeds working properly.