Help Selecting VFD

[Jackal66]

I have been looking at VFDs and am somewhat undecided.

My machine will be using Mach 3 to control the spindle.

The spindle motor is : 2.2 kw, 240 volt, 8.5 Amps.

The ones found on Ebay are almost all from China. ( The others maybe ,too, and they just don't advertise it???)

Here is the best prices I have found on *Name brand* VFD's:

Teco Westinghouse Drives, Power Components, Teco FM50 Phase Converter, Teco Inverter

The (2) that caught my interest are :

3HP 230 Volt -- USE AS A PHASE CONVERTER PLUS GET VARIABLE SPEED, Model FM50-203-C, Single Or Three Phase Input-Three Phase Output, variable frequency drive, variable frequency drives, ac drive, vfd, afd, frequency drive, drive, inverter, adjustable

And :

3HP 230 Volt -- USE AS A PHASE CONVERTER PLUS GET VARIABLE SPEED, Model JNEV-203-H1, Single Phase Input ONLY, Three Phase Output, variable frequency drive, variable frequency drives, ac drive, vfd, afd, frequency drive, drive, inverter, adjustable sp

Would these be ok, is the difference between the two something needed over the less expensive one? Would a larger 5HP be better ?

Is there another on the main page that would suit my application better?


Teco Westinghouse Drives, Power Components, Teco FM50 Phase Converter, Teco Inverter

These brands are just names that I am familiar with. They may not be a good selection for a VFD. If so please advise me of this also.

Thanks in advance,

JAckal

[Al_The_Man]

Originally Posted by Jackal66 Would these be ok, is the difference between the two something needed over the less expensive one?

The second one is described as Sensorless Vector, hence the higher price.
This is the preferable one.
Al.

[TarHeelTom]

Here's another VFD source


Variable Frequency Drive, AC Motor Drives, Pool Pump Motors, Marathon Electric 3 Phase Motor, Teco Westinghouse Distributor

Tom

[Jackal66]

Thanks Guys,

Tom, I think that might be the same company but on a different page. They are the lowest prices I've seen on brand name stuff.

Is one of the brands better than the other? Teco, Westinghouse, etc?

Is it better to go with a larger unit ( 5hp) , or would that not work correctly?

Thanks again,

JAckal

[Al_The_Man]

Many VFD manufacturers now offer 1 ph or 3 ph without derating on 1ph.
It looks like the ones in the link are this type, you can use a larger VFD, but if the manuf says it will support the FLA of the motor you have, you should be OK.
Al.