VFD Questions

[mksj]

If that is the case, you could get an inexpensive 1/4Hp VFD for the drive, but at the end of the day may be simpler and not much more just to replace it with a single phase 120VAC drive. The micro VFD's are quite small, and you could run everything off of 120VAC if you wanted.You could put both VFDs in the same cabinet to prevent chips from getting into them. Sealed VFD's are a bit more expensive.

https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/micro_vfds

 

[todd281]

I thought about replacing the Power feed motor with a single phase one. Unfortunately, the motor output shaft is excessively long, with a worm gear on its end and no support bearing out there. I could turn out a adapter shaft for some other motor but that is getting into more rigging that I would like to avoid. I may try making a rotary converter using a 3-phase motor. Still chewing on that idea.

 

[todd281]

Good news is I received the VFD this afternoon. I thought I had ordered the wrong one. The seller's ad said the input was 110v single phase, and the output was 110v 3-phase. [seems odd] Upon getting the unit, it is labeled 220v single phase input, and 220v 3-phase output. I don't know if I was sent the wrong one, or the ad was wrong but in the end of it all, I think I got the one I wanted. I dropped off the motors at the repair shop this afternoon, they said about a week turnaround. That gives me time to get the mechanical end cleaned and painted.