Trying to run a CHNC on 1ph

Turbodime · Jul 14, 2015

Just picked up a '83 CHNC 4 with a Fagor 8025T controller and im looking to run it on single phase. I have a 240v 60A sub in my shop(garage) and Ive had a DSM-59 running off a 3hp RPC for many years. Ive read that these lathes can easily be switched to run off of single phase without going the RPC route.

It has a 7.5HP 208v 3ph motor.

Thanks for any help
Aaron

Red James · Jul 14, 2015

Contact the author . . . sounds a little strange to me that a machine tool builder in the 80's would build in a method to run a three phase motor on single phase.

FredC · Jul 14, 2015

I am fairly sure there is no way to run that machine on single phase. We ran a Hardinge GT off a RPC for several years with no issues. We bought a premium CNC rated unit. All the rest of the machines ran on the standard RPC. Surprisingly we had a very low electric bill with all those machines running.

Turbodime · Jul 14, 2015

Contact the author! That would be too easy

Why didn't I think of that.
Thought id look into other avenues before I pull the trigger on an RPC.

Thanks for the help. It's nothing but crickets over on the Zone when I asked this question.

JRIowa · Jul 15, 2015

It can be done. If you go with a rotary, don't buy a cheap one. Check on a Ronk. ROTO-CON - Rotary Phase Converters - Ronk Electrical
If you want to spend more money, you go with a phase-perfect. Phase Converter Applications for CNC Machining
Or, if you know of a really really good electronics guru, you can separate the control and run all the motors on VFDs.
JR

vertcnc · Jul 15, 2015

I have a 3ph 10 HP motor running off a VFD with single phase power. You loose a little power but works great.

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Trying to run a CHNC on 1ph

Turbodime

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Red James

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FredC

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Turbodime

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JRIowa

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vertcnc

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