I have recently installed a new stepper motor on my OMTech AF1630-70 with a KT332N controller. Now, the work area seems to be off, and I am not sure how to fix it. My machine homes in the back right corner, now it is about 3" to the left. When you manually jog the head to the left side of the bed, it doesn’t stop like it used to. It will run into the rail like it wants to keep going. aligned
The motor was making crunching noises, so I bought a NEMA 23 3 phase 573S20 5.8A 212in-oz Stepper motor and 3 Phase 3DM580S 8A 1-axis Stepping Motor Driver, both from LightObject. I thought I was upgrading, but now I’m not sure if I bought the right stuff.
The stepper motor I replaced was Type 23HD450Y-28A. The motor driver was a DM545A.
This is unlikely to be related to a motor issue, at least not directly. The position of the laser head after homing is governed by the position of the limit switch. If the laser is homing farther left than what it used to then there’s likely something causing the limit switch to become actuated earlier than you expect.
Carefully examine your machine to see when and how the limit switch is getting actuated on the X-axis. It’s likely that something has either shifted or there’s an obstruction of some kind. Once identified, remedy the change.
This is likely due to the incorrect home position. The machine believes there’s sufficient space to continue farther than the space available due to the home position.
Once you correct the homing position, if you continue to have an issue it’s possible that the step size of the new motor is different than your previous motor. You’ll need to correct for that separately in that case.
Thank you for the reply. I left the machine powered off for about 2 hours, and when I came back, everything worked correctly. I’m not sure what changed other than letting it sit.
It’s possible you’ll have an intermittent issue in that case. In any case, if the issue comes up again my suggestion would still apply. You may want to pre-emptively take a closer look to see if there might be something that has the potential to hinder the homing process.