- Joined
- Apr 23, 2018
- Messages
- 6,573
This is for my Nardini 1760. I saw it run under power before buying, so start there. I wired up my RPC, tied it to the power panel on the lathe, and... nothing. RPC is putting out 230v on all legs, 3-ph output breaker is set, master power is through to the lathe panel.
Circuit breakers are set and the contactors pass the PTT test.
Interlocks. This is what I think is going on. There is a head gear cabinet with a plunger switch, and an operator's e-stop. Both of these interlocks work, I can hear the mag switch cycling when I move them. There is a lock out/tag out disconnect in the panel, it's a rotary switch that works, but it may also be a plunger switch to interlock the electrical panel door also- I'll check when I get home. Then there's the panel indicator lamp that lights when power is ready. It's a Sylvania 27v bayonet bulb with two filaments but only one contact on the bottom, which is weird. It's also burnt out. So I am hoping the BULB is not part of the interlock like a damn charging circuit. I'm really not sure.
Then there is the neutral/brake switch, which checks out visually and mechanically.
There is also the possibility of oil pressure switches as an interlock. No clue if pressure sensors even exist, and I think the 3 oil pumps are mechanical anyway.
I do have schematics, which is how I plan to spend my evening. The schematics are the key to the whole thing obviously, but if anyone has some simple ideas to try...
I also plan to swap two legs on the 3-phase just to be sure.
Any thoughts? I was pretty sure I'd be up and running last night.
Circuit breakers are set and the contactors pass the PTT test.
Interlocks. This is what I think is going on. There is a head gear cabinet with a plunger switch, and an operator's e-stop. Both of these interlocks work, I can hear the mag switch cycling when I move them. There is a lock out/tag out disconnect in the panel, it's a rotary switch that works, but it may also be a plunger switch to interlock the electrical panel door also- I'll check when I get home. Then there's the panel indicator lamp that lights when power is ready. It's a Sylvania 27v bayonet bulb with two filaments but only one contact on the bottom, which is weird. It's also burnt out. So I am hoping the BULB is not part of the interlock like a damn charging circuit. I'm really not sure.
Then there is the neutral/brake switch, which checks out visually and mechanically.
There is also the possibility of oil pressure switches as an interlock. No clue if pressure sensors even exist, and I think the 3 oil pumps are mechanical anyway.
I do have schematics, which is how I plan to spend my evening. The schematics are the key to the whole thing obviously, but if anyone has some simple ideas to try...
I also plan to swap two legs on the 3-phase just to be sure.
Any thoughts? I was pretty sure I'd be up and running last night.