Very new to machining in general but bought a bunch of machines recently and trying to get things sorted out. I have a mill/surfacer for milling automotive heads that I finally got going.
I purchased a WNY 20hp RPC (I know they are frowned upon, but all I can afford for right now), and I picked up 20hp 3phase motor (Electrum, spelling is off I think). It was brand new but older model, around 2014 I think. Sat in storage for years at a commercial laundry mat a guy was closing. I got it all wired up and seems to be working great. The first night I had it running 2-3 hours without issues. I had decent size loads on the machine and all worked well.
The next night and every day since it will randomly just shut off. If I go back to the RPC panel and turn it back on again, it will come right back on and work. It is not load dependent; today I had it running for 5 min and was essentially just adjusting the Z travel on my mill (power fed) and then it shut off. Sometimes it runs 5 min sometimes 30 sometimes an 10min. It does seem like its getting worse though.
I called the RPC maker, and he said theres nothing that should be shutting off the RPC. There's no safety switch or thermal protection or anything like that. Said to double check theres not a loose connection as one it loses power it WILL not keep trying to restart. I of course looked, but didn't see anything.
Nothing is getting hot at all. I have everything ran with 6 gauge wire and the big 30, maybe 50amp plugs I forget. 100amp breaker for now. Nothing is tripping etc.
Any idea what to look for? I've only used that one machine for right now as I haven't had time to access/setup the other machines yet.
One other note, I've noticed at times when I go to start the RPC, the idle motor acts like it wants to spin backwards sometimes. It will sort of get "locked up" and not move but clearly wants to go one way, but then another, then another...like its fighting itself; but never moves. I generally stop trying to start it...kick it over with my foot then start it and it starts immediately. I have a feeling that is somehow related to my problem as well.
I purchased a WNY 20hp RPC (I know they are frowned upon, but all I can afford for right now), and I picked up 20hp 3phase motor (Electrum, spelling is off I think). It was brand new but older model, around 2014 I think. Sat in storage for years at a commercial laundry mat a guy was closing. I got it all wired up and seems to be working great. The first night I had it running 2-3 hours without issues. I had decent size loads on the machine and all worked well.
The next night and every day since it will randomly just shut off. If I go back to the RPC panel and turn it back on again, it will come right back on and work. It is not load dependent; today I had it running for 5 min and was essentially just adjusting the Z travel on my mill (power fed) and then it shut off. Sometimes it runs 5 min sometimes 30 sometimes an 10min. It does seem like its getting worse though.
I called the RPC maker, and he said theres nothing that should be shutting off the RPC. There's no safety switch or thermal protection or anything like that. Said to double check theres not a loose connection as one it loses power it WILL not keep trying to restart. I of course looked, but didn't see anything.
Nothing is getting hot at all. I have everything ran with 6 gauge wire and the big 30, maybe 50amp plugs I forget. 100amp breaker for now. Nothing is tripping etc.
Any idea what to look for? I've only used that one machine for right now as I haven't had time to access/setup the other machines yet.
One other note, I've noticed at times when I go to start the RPC, the idle motor acts like it wants to spin backwards sometimes. It will sort of get "locked up" and not move but clearly wants to go one way, but then another, then another...like its fighting itself; but never moves. I generally stop trying to start it...kick it over with my foot then start it and it starts immediately. I have a feeling that is somehow related to my problem as well.