Which VFD for my 5hp DOERR 200v 17.3A 1740 motor?...and can I use lath's VSD after?

caddguy · Aug 24, 2016

I recently acquired a Clausing 1301 lathe that has this 200v motor.
I would like to use one of the HuanYang VFD's but not sure on size selection and what to look for in the specs for these chinese units?
I am thinking just to buy the 10hp VFD because the 7.5 and 10 are so close in price.
I do not want to go the RPC route because of the 200v issues.
I have normal 240v single phase in garage.
This is the unit I am looking at:
Top 22V 7 5KW 1HP 34A VFD Variable Frequency Drive Inverter CE Quality | eBay

Jraef · Aug 24, 2016

I for one cannot recommend using anything of theirs. Even if it were free, it would not be worth the price... Pure junk.

Monarchist · Aug 24, 2016

Jraef said:
... Pure junk.

Optimist!

"Pure" my aching backside...

"Contaminated junk" would better fit the reality....

WHHJR · Aug 24, 2016

If the motor is dual voltage ie 208-230 try this 7.5Hp Rotary phase converter kit 23vac with perhaps an idler motor. You will then simply use the machine as designed with it's internal VS belt drive.

Otherwise go this route 1 Hp Hitachi Three Phase VFD 2-23vac Input/Output It really is a 10 HP unit.....

Monarchist · Aug 24, 2016

WHHJR said:
Otherwise go this route 1 Hp Hitachi Three Phase VFD 2-23vac Input/Output It really is a 10 HP unit.....

Of equal importance, the maker, not a hobbyist, publishes this:

http://www.hitachi-america.us/suppo.../AN032404-1_Rev_A_Sizing_for_Single-Phase.pdf

And the price 'umbrella' opens the option to several OTHER built-for-single-phase 5 HP or thereabouts units as well.

RPC's are still damned handy to have under-roof.

For one thing, they are seriously hard to damage and waaay cheaper to fix if cobbled when setting up a newly acquired machine-tool of highly uncertain electrical condition.

I'm more careful with my costlier VFD and Phase-Perfect.

Bill

caddguy · Aug 25, 2016

WHHJR said:
If the motor is dual voltage ie 208-230 try this 7.5Hp Rotary phase converter kit 23vac with perhaps an idler motor. You will then simply use the machine as designed with it's internal VS belt drive.

Otherwise go this route 1 Hp Hitachi Three Phase VFD 2-23vac Input/Output It really is a 10 HP unit.....

Oh...on sale for $800.00. Nope.

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Which VFD for my 5hp DOERR 200v 17.3A 1740 motor?...and can I use lath's VSD after?

caddguy

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Jraef

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Monarchist

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WHHJR

Stainless

Monarchist

Diamond

caddguy

Aluminum

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