Customer Reviews for VEVOR VFD 4KW, Variable Frequency Drive 18.5A, CNC VFD Motor Drive Inverter Converter 220V, for Spindle Motor Speed Control (1or 3 Phase Input, 3 Phase Output)

I am using this VFD to drive a 10HP asynchronous 3-phase AC motor for a sawmill. I'd prefer to have a 15/20HP VFD, since there is some HP loss due to derating when going from 1-phase to 3-phase, but I don't want to pay 5 times the price. This is my second cheap VFD. The first VFD is the current bestseller, and as I have learned: best seller doesn't always mean best choice. That particular VFD died spontaneously after a short usage life and a second replacement died shortly after when the magic smoke was released. It's not built terribly well.The Mophorn VFD, while around the same form factor and rating, seems to be built a little better. Inside there is more space on the power control board and beefier looking traces and components. There's more space on the terminal block for wiring input/output power. There are more huge capacitors and the cooling fan spins like it's life depends upon it. Also, there is a bank of 3 glass fuses, which I assume are suppose to sacrifice their life, instead of the VFD having to. This one point alone puts this VFD ahead of the other. It includes some replacement fuses taped inside the front cover, so it seems they expect them to blow.This VFD also seems to put more power out. I have yet to quantify the output with an amp meter, but just from my short use, it powers the motor with more torque and allows my mill to operate without bogging down as much during wide log cutting. It also accellerates the motor up to speed more smoothly and with less of the usual high-pitch whine that VFD can induce in AC motor. (FYI: The carrier frequency causes the whine, and with this VFD it doesn't appear to be adjustable).There are a few downsides to this. version. There is no potentiometer on the display. But you can configure the arrow buttons to control the frequency/speed and/or wire a potentiometer into the auxillary block. This VFD has far less options to configure, maybe 20 or 25 total setting, and there are only 1 or 2 that need to be set in orde

This vfd is nice. Works as it should and programming is easy. The cost of a phase converter to run a 10hp motor is a whole lot more than the cost of this and it runs my iron worker with ease

Got it quick

I don’t like that you can’t enter specific motor data. And limited control circuit options. But not bad for the price.

Cost effective - works like a champ! Took a while internet researching and figuring out best settings. Works great with my 2x72 belt grinder and 2 hp 3-phase motor.

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Works perfectly for what I needed it for. Very easy to use and set up. (I have the 7.5kW)

Works perfect .

this equipment works excellent, just you need to know something about electrical knowledge, to me is clear but many people want to install for theirselves, and they not know what is frecuency, what torque is, how is related frecuency with speed of the motor, what is voltage, what is current power and horse power, why you should connect the motor directly to the VFD not thourg contactors, all this issues i have face with people that wants to install this equipment, and the big issue with the especialized technician is taht they want this equipent has the same process of configuration of a Siemen or ABB.

Allows me to use 3-phase equipment in my single phase powered shop. Cheap for the function it provides.