Well, a digital analog converter wouldn't have a variable frequency motor drive, but I think that is what you are asking for. Look at this link to farnell UK SIEMENS|6SL3211-0AB12-5UA1|INVERTER, UNFILTERED, 0.25KW | Farnell United Kingdom they also operate in the far east. That is a .25 kw drive, about as small as you can buy. Interfacing would be up to you. Usually VFD drives have a 0-10v analog input for variable speed. Else they can take a digital input through their front panel for a fixed speed, ramp up time, slow down time, etc. Omron, Japanese company, also makes VFD's in the .25 kw range.
Hi,That is Wadia DAC series 9, it is very difficult to buy a damaged DAC 9 in my country. If you found one, pls let me know, I really need this.
Btw, do you know how to edit title of this topic. I want to make it more clear so may be other members can help.