VFD advice

L

little mac

Joined
Dec 3, 2005
Messages
122
My KMG clone is very near completion and I just got a 2 HP 3phase 3450 rpm motor for it at a really good price. Now with tax money coming, I'm thinking of useing a VFD instead of step pulleys. I'll manage to get 220 single phase in ot my work area.
Any suggestion as to what brands to avoid, features I'll need, won't need, where to get the best deals ?
I'll add that I may want to use this as a universal drive as I got a total of 4 motors ( 2 HP ea) and may at sometime want to use them for other projects. For that my plan will be to use the standard 4 prong plugs for 3 phase and just move plugs as needed. Anything wrong with that idea ?
 
I am new to this but if I may ask. What is the difference between single and triple phase? I am looking to get a KMG with the best motor sold on the KMG website, the 3HP single phase variable speed model (cat no. VS-VFD-3.0). I have an electrician that lives across the street who says he can put a 220v line in my spare garage. It has 110v now with plenty of space on the breaker box (it has an electric water heater so I wonder if that's 220v). Is there anything I should tell him to do when installing the 220v line? Does the installed line need to be 1 or 3 phase and does a VFD need 3 phase to function optimally? Thank you in advance.
 
Just to be clear you do need some sort of phase converter for the three phase motor, whether it is a rotary or static converter, or VFD. You did not mention an alternative to the VFD for the conversion.

I have two TECO FM50 VFD's, one with a NEMA 4 enclosure and another IP66(I think) open enclosure in a filtered box. I have had no problems with mine whatsoever. The KBAC drives that Rob sells with the KMG package are nice too, I have nto heard anybody complaining about them.

Guys get the KBAC from state electric, and I got my FM50's from factory mation (NOT motion) Having an external pot for speed control is nice, and external switches for power to the motor and reversing.

One thing that I did was wire up my filtered box with a 50A 4 prong 220v outlet on the side so I can plug different machines in and not have to hard wire everything, my machines have 4 prong 50A plugs on em.
 
I have the Teco FM50 in a flitered box as well. No complaints here. Check out the shop tour in my website for some pics of how I have it set up.

--Nathan
 
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