Mr Handy
I believe you might find an answer on the Hoffman enclosure website. http://www.hoffmanonline.com/.
They used to have a downloadable program that can assist in determining an enclosure and cooling. I am also sure they could assist you directly as most any other enclosure manufacturer...
Try Mosaic Industries <A HREF="http://www.mosaic-industries.com" TARGET="_new">www.mosaic-industries.com</A> <br>
and Micro-bit Technology inc Not sure of web address.<br>
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There are many more. Some with out interfaces.<br>
These are controllers with digital I/O, analog I/O, RS232 and...
This may be late but...<br>
The stated drive is single phase input but it still outputs to a 3 phase motor. Variable freq (inverters) are only applicable to 3 phase motors. <br>
So if you have a single phase motor you cannot control the speed with an inverter drive.