I know this is common issue but not sure which one.
I used my LR2 this weekend to make a cut and worked just fine.
Yesterday my Y axis is not moving. I know I snagged the wire to the motor on something as I was getting things into position. I’m guessing its a wire connection issue (I checked the grub screw - its tight). Is it possible to pull a wire loose in the motor itself and how difficult is it to fix that? Or do I need to replace it? the closest other connection is down the line aways and has 1-2 zip ties before it.
No answer to your specific question, but I wanted to mention that if a stepper gets unplugged during use, it can result in a blow stepper driver. Swap your Y1 and Y2 at the control board and rerun your test. If the problem stays with the same stepper motor, then you have a wiring issue. If it travels to the other stepper motor, you have a blow stepper driver.
Edit: I’m curious, and, if I’d been at home, would have pulled a NEMA 17 apart to see the wiring. Since I’m not at home, I did a quick search on YouTube and found this video. In this video, his problem was a break inside the insulation, so he did not have to disassemble the motor further. If you have pulled the wires from the contacts, you’ll have to disassemble the motor further, but it looks doable.
Thanks for the tip. I only have the rambo mini board so I don’t have a second Y plug in. I did plug the stepper into the Z to test and had the same result. This then indicates a wire connection issue are you pointed out. I will see what I can do to trace it down. hopefully it is not in the motor itself.
The motors themselves are as solid as rocks. But you may have broken a wire inside.
You can disassemble them and reassemble them. I did that once to install longer threaded rods in one of the ones that had the internal threaded rod. It worked fine for me, but I remember there being warnings. At $10 or so per motor, it probably isn’t worth fighting.
So I would first pull the motor out of the machine and plug it straight into the mini rambo. If that still doesn’t work, then look closely at the parts of the motor wire you can see. If nothing looks like it is broken, then replace the motor.
My money is on a wiring issue outside of the motor though. That is very common and easy to miss.
this is what I am thinking it is, based on where I have zip ties and how it would have been pulled with the wire snagged.
but yeah, I will work my way down to find it.
I found the same video @robertbu linked to but like you said, at $10 I can just replace it if needed. Maybe still fix the old one just in case.
