Can 220v VFD run a 220-440 motor ?

[A-V]

Been wanting to upgrade that grinder since I've got it, so here's the deal :

Looking around on the internet I saw people claiming you can run a 220-440v 3phase motor from a 220v 1 ph VFD.

Am I totally wrong? Definitely don't want to order and be sorry once it gets here.

 

[Self Made Knives]

Yes, they make single phase input, three phase output VFDs. I have a band saw, drill press, and 2x72 running 3ph motors with single phase input drives. My VFDs are all 120v input and I have the motors connected with their 240v connections. They work great. Here's a thread where I posted a video showing the band saw upgrade: http://knifedogs.com/showthread.php?39581-Converting-shop-machines-to-variable-speed

 

[EdCaffreyMS]

Yep! Its certainly doable. I run 3hp 3 phase motor on a couple of my grinders, both from a single phase 220V plug. My advice is to steer clear of the "cheap" VFDs. Over the years I have come to trust KBAC VFDs as the easiest to install/maintain, and the most reliable. I can't count the number of phone calls and emails I've fielded from folks who insisted on buying "the cheapest I could find" VFD, and they had nothing but problems.

Here's where I buy most of my VFDs..... just make sure you purchase the correct model for the power input you'll be using, and the HP motor your running.

1hp motors: http://www.electricmotorwholesale.com/9987-KBAC-24D/
2hp motors: http://www.electricmotorwholesale.com/9667-KBAC-27D-GFCI/
3ph motors: http://www.electricmotorwholesale.com/10001-KBAC-29D/

 

[scott.livesey]

running a 3 phase motor using a 120V(1.5Hp max) or 220V(usually up to 3Hp) VFD is how most of us get variable speed. TECO/Westinghouse, Allen Bradley, Baldor, Leeson, and Siemens are trusted industrial suppliers and make VFDs that are designed to run 24/7 for years without failure. PM me what you are looking for and I can work you up a quote.