Hey Jon, where the heck have you been dude?
Yea, Matt sent me a brand new motor (I didn't even ask...) to replace the dinged one. I'll likely use parts off the single phase to repair it and keep it for a spare. I had some stuff I wanted to make on the new lathe right away, so didn't want to start tearing the lathe apart until I got those done. I basically got serious about the change over a week ago.
But I'm struggling a bit with the change-over to 3 phase/VFD. I haven't done any electrical rework in over 20 years so I have nothing to do the work with, and never having done this exact stuff before, I didn't know what I needed until I needed i,t and it's another week waiting for something to arrive.
I have a large NEMA-1 box that I'm mounting to the side of the stand near the lathe head. When I ordered it from Automation Direct they suggested a sub-panel, and at the time I couldn't figure out why I would need it so I didn't get it. I figured out why I need it last Saturday morning. It should be here sometime this week (Bill drumming his fingers on his desk). There have been a string of events like this.
So far, I've managed to make a new control panel for the front of the lathe and have switches on it for E-stop, JOG (fwd and rev), Frequency/motor speed, and Braking. I need to finish making the wiring harnesses for the front panel (waiting on colored heat shrink tubing for that), and start mounting pieces on the sub-panel when it arrives. I'm literally taking the fiber board with the bus-bar and 24v transformer and transferring it to the larger box. The original electrical box is completely empty. I put it back on the lathe to give me more room for laying stuff on top of the headstock.
Oh, and I have to mount the braking resistor inside the big box as well. This last weekend had me changing out the single-phase motor for the three-phase, and mounting the large box on the lathe stand. Hand drilling the five 3/4" holes in the bottom of the box with a cheap import drill bit was a little more excitement that I wanted...
Then once everything is installed/mounted I need to re-read the instructions in the manual for changing control parameters in the VFD, because I want to do this manually from the front panel the first time so I know exactly what is in the VFD. That and I figure I have a bigger chance of screwing things up if I try to do a config file download to do the initial programming. I'll probably have all of the electrical done this next weekend.
If I didn't forget anything else.
Mechanical mods are SO much easier.