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Delta unisaw

1K views 8 replies 6 participants last post by  wapakfred 
#1 · (Edited by Moderator)
Hey guys. Found another saw on Craigslist that has my attention. Owner says it's 3 phase but not sure. He has sent me a picture of the plug and of the motor. Can this motor be wired either way? I need some info.
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#6 ·
Yeah well, if you want it, just suck it up.

Bear in mind the guy standing in line behind you also has the added expense.

I wanted a South bend lathe so bad, I could taste it. It was a toolroom lathe with all the attachments, crap. The phase convertor wasn't so bad. My engineer son rigged it, all I had to do was set it up and play. Turn on the convertor, turn on the lathe, and go.

It's too bad my tongue was hanging down to my knees, I could maybe have gotten a better deal.

Mark
 
#7 · (Edited by Moderator)
You can use the fact that it's three phase to negotiate on the price… and wind up better off if you can swing a deal. Most three phase machines sell for less because a lot of people are afraid of them thinking they can't run it unless they rewire their house :) Three phase motors are more efficient and more robust than their single phase counterparts (no start circuitry, centrifugal switch, capacitors, etc..). And with a VFD, you can do all sorts of things not possible otherwise - like slow start (check my profile page for a video showing it in operation), controlled braking, variable speed (good for cutting stuff like plexiglass and non-ferrous metals), additional capabilities like emergency stop, over-torquing and more. It also replaces the starter that is on the machine, so you can yank and sell it to recover most (if not all) of the extra money you spend for the VFD. Just saying.

Cheers,
Brad

PS: If that is the motor I think it is, it's rated at 7.4A, so you can use the "2HP" VFD (rated for up to 7.5A) to save a little money. The 3hp VFD I linked to in my previous post would be overkill for it. The L510 sensorless vector drive is about $175, or you can go with the v/Hz FM50 for right around $150.
 
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