Thread: recommend VFD for 1hp motor

Will be interesting to see what your friend has to say.

As you say it would be nice to have more than one option.

Stuart

Peter,
I had a dedicated look through the site and can't find any models that convert 240V input to anything other than a output of 0-100% input voltage.
Do you have a model number that is meant to do a voltage increase?

Originally Posted by thorens

no.
it in the same site. the guy i talk with is sure that the danfoss they sell is single phase to 3 phase 415v .
there is a guy i know used one of them for his milling machine . however i was very suprise my self to find this to be the case . i will have to double check just to made sure .
if it indeed 240v single phase to 415v 3 phase then we don't have to buy them from overseas and prive seem cheaper too.

Peter

Hi Peter,

I have a Danfoss VLT Micro on the lathe, nice vector drive. But it's 240 single phase in 240 3 phase out. Yes there is a model which is 415 single phase in 415 3 phase out... but no 240 in 415 out, As stuart and joe have already mentioned, drivesdirect in the uk are the only ones I've ever heard of.

Ray

Originally Posted by RayG

Hi Peter,

I have a Danfoss VLT Micro on the lathe, nice vector drive. But it's 240 single phase in 240 3 phase out. Yes there is a model which is 415 single phase in 415 3 phase out... but no 240 in 415 out, As stuart and joe have already mentioned, drivesdirect in the uk are the only ones I've ever heard of.

Ray

HI Ray.
that is what I see too but the guy at automation just keep saying that it is single phase to 3 phase 415v. also an engineer friend also swear that he have this VLT unit running his milling machine which have the 415v motor . i need to double check on this and confirm which model he has used .
i do have my doubt ,
Peter

415 volt single phase is 2 x 240 volt actives, maybe that is what they mean by 415 volt in.

Lex.

Originally Posted by Techo1

415 volt single phase is 2 x 240 volt actives, maybe that is what they mean by 415 volt in.

Lex.

Yes, correct, that's the 480V sometimes found in rural areas. It doesn't mean 240V in 415 out.. but it is single phase in 3 phase out.

Incidentally you can run just about any VFD on single phase power, be it 415, or 480 single phase or 240 single phase, provided it can be configured so that it doesn't alarm and shut down on missing phases, and of course you have to de-rate the output accordingly.

The Danfoss VLT Aqua FC202 is available in two single phase models, 200-240V and 380-480V single phase input.

Ray