Hi there. Not sure if this will help you out, but I took some videos of my Chinese 80Watt laser wiring this week just before upgrading it. That way I have a record of the electrical signal flow and all connections.
I have a manual up/down buttons to raise and lower my Z bed. So in the video you can see how it is wired from the factory when using a standard electrical motor. Not a stepper motor.
I bought a stepper motor to replace it and use the Ruida’s onboard Z height adjustment from the front panel buttons. Just starting the upgrades this week finally after a year of distractions.
Here’s a playlist. First video is a 15 minute end to end walkthrough of the electrical signal path from the wall to each device. The videos afterwards were recorded before the long one at the beginning of the playlist but may give more detail. I didn’t quite have it all figured out on the shorter vids so the longer one is more correct.
I also called AC power positive and negative, but I guess it’s Live and Neutral actually?
As with everything we do to our lasers, what works for some may not work for others. I have a 50w OMTECH and I got the idea (after doing a lot of research) from a guy on REDDIT who had a 100w machine. I did mine differently because my situation was different.
The picture shows how I wired it up (and the DIP settings I used) for my specific situation. I put the stepper where I did (in post #5) because that’s where it fit without getting in the way (a NEMA 23 was too big). Some have mounted it at the bottom of the cabinet, but I found putting it next to the knob worked best for me. My setup allows me to use the Z/U button on my RDC6442 control panel to access the Z axis and use the left/right arrows to move the bed up and down to manually focus, or run it down much lower so that I can use my rotary. Each situation is different, and you really can’t just say “here are the parts, here’s how you do it”. For about $40 and the parts I had on hand I was able to get something that works very well for me. Good luck.
