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Wiring Tree 2UVR-C to Phase Converter Questions

SouthBendK1

Plastic
Joined
Mar 13, 2007
Location
VA
I'm getting ready to wire a power cord for the milling machine. It will going to an American Rotary 3 phase converter. Someone penciled in the panel that L1 is the black wire, L2 is the red wire, and L3 is the blue wire, which I believe is the wire from the idler motor. I'll be using a 4 conductor wire and grounding the machine.

Is there anything peculiar about this machine that would make it wired differently?

Thanks
 

rons

Diamond
Joined
Mar 5, 2009
Location
California, USA
Don't own one. But they are no different than the others.
Better to open covers and make sure the penciled stuff is correct.
Anything acquired in used condition is peculiar.
 

BT Fabrication

Stainless
Joined
Nov 3, 2019
Location
Ontario Canada
I'm getting ready to wire a power cord for the milling machine. It will going to an American Rotary 3 phase converter. Someone penciled in the panel that L1 is the black wire, L2 is the red wire, and L3 is the blue wire, which I believe is the wire from the idler motor. I'll be using a 4 conductor wire and grounding the machine.

Is there anything peculiar about this machine that would make it wired differently?

Thanks
nope, 3 phase is fine any way its hooked up, only needs specific if there is a pump or directional motor involved that only turns one way. if so switch any 2 wires to turn the other way.
 

nc5a

Cast Iron
Joined
Jan 4, 2013
Location
Alaska
As BT said you need to pay attention to directional motor rotation. Specifically the power feed motor on your 2UVR-C which is directional and should have an arrow on the housing showing rotation. I have a 2UVR-C so congratulations on getting a very fine milling machine.

My Tree is powered from a 10hp rotary phase which is larger than necessary but it also powers other higher hp machines in my shop.
 

SouthBendK1

Plastic
Joined
Mar 13, 2007
Location
VA
Thanks for help. Got it running today. Table power feed is not working. Motor is turning, so that is good. When I turn the power speed knob, it makes noises in certain spots. More importantly, the spindle motor is tripping a breaker in the panel. That red one that you push in to reset it. I'll have an electrician look at that. I couldn't get the power quill to work either. The power knee worked fine.
 

rons

Diamond
Joined
Mar 5, 2009
Location
California, USA
More importantly, the spindle motor is tripping a breaker in the panel. That red one that you push in to reset it. I'll have an electrician look at that.
Is there a small adjustment knob close to the red push button? The tripping is probably the overload current protection relay.
Display a picture.
 
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rons

Diamond
Joined
Mar 5, 2009
Location
California, USA
The overload relay has no fine adjustment.
I was thinking of something like a 85-115 percent range adjustment.

This one is a new version with a wide adjustment range.

Your relay can be replaced if necessary.
 

rons

Diamond
Joined
Mar 5, 2009
Location
California, USA
Thanks for all the help with is issue.
If you think this is help... maybe you are wrong.
I don't like those type of fixed range heaters. I have a few motor starters with them, but I don't use them.
You can get something modern and adjustable.

The overload in the second pic is the same thing as the in the first. Except that instead of screw terminals the wires pass
straight through. A different version of the same device. The pass-through version inductively picks up power to energize
the IC. I like the wide adjustment range.

DSC_0806.jpg DSC_1024.jpg
 

SouthBendK1

Plastic
Joined
Mar 13, 2007
Location
VA
I noticed that my motor starter only has two heaters. Also, the machine was 440V before I got it. The shop I got it from converted to 220V. The spindle motor amps went from 2.4 to 4.6. Would it need different heaters based on that?
 
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