QNK 5.5KW 7.5HP 220V AC 25A VFD Converter Single to 3 Phase Inverter Variable Frequency Drive for CNC Spindle Motor Speed Controller White

I picked this up to run an Enco 3 hp vertical mill. After spending some time with the manual, I hooked it up without issue on the first try. My mills runs buttery smooth without hesitation. I like the ability to vary the speed with the turn of a dial. I remote mounted the VFD on the front of the mill for easy access. The included cable was just long enough to reach from the back of the mill to the face plate I made for the front by the master switch. I would and did buy again. Picked a 25 amp unit up for my 3 phase table saw I just drug home from an auction.

Using this on a 3hp 3phase motor on an old lagun mill. Has been working great so far. Easy to do variable speed with. Probably one solution for those folks who have variable speed pulleys which don’t work correctly anymore.

Set up is a little confusing but once figured out has worked great for my 1hp mill

Yes this inverter works well and was pretty easy to get set up, it helped that I recently went through the programming of a similar inverter

Needed this to control a new motor for my lathe to give me variable speed without moving the drive belt (DIY upgrade). The instructions on how to program it are pretty good - no trouble following them. Combined with an RPM sensor, I have exactly what I need.

I feel dumber every time I read it. I’ve read it 12 times and now people are giving me crayons and calling me “little buddy”.How this manual ever made it to print is baffling. It is like someone had AI go through a dictionary and just scatter every word known to man and put them in this manual. I’m serious, this is sad that this is what comes with something that could kill you if wired wrong. Returning for sure.

I connected it to 220VAC and I connected the 3 motor phases. And it worked. I didn't use any of the special controls or settings. I turned it on and off. Reversed directions. And varied the RPMs with the knob on the front. And I was pleased with how easy it was ti get it operating.

I used this VFD to control a 3-phase 5-hp air compressor motor. I used the slow start function to slowly start the motor over 5 second period. I used the compressor pressure switch to control the "run" feature. I let the compressor run for 30 minutes with open lines, then let it cycle several times. No problem with the motor or the controls. The only negative thing is the manual. You need reading glasses to be able to read it and it is poorly translated. More diagrams would be helpful. Other than the manual, it everything else was good.