GEARFLAG Inverter VFD Drive 1.5KW 220V 2HP Variable Frequency Drive 3 Phases for Spindle Motor Speed Control (1.5KW)

This drive is really a step above most of the other cheap VFDs in both features and quality. Right out of the box the first thing you'll notice is the plastic casing on these is heavy duty and really nicely molded. A welcome change from other low cost VFDs. The Gearflag also comes with a handy remote control in the box instead of selling it as a separate add on. Instructions are typical for a product at this level, most of the information is there but if you're unfamiliar with VFD setup its probably a bit overwhelming and unclear.Feature wise this thing is excellent and has far more control options then some of its competitors. If you need advanced control options or RS485 interface for remote control this is the box for you. If your needs are more simple this drive is well setup with the factory defaults and doesn't require much tweaking out of the box. Some common changes that most people would likely want to make is enabling frequency control from the remote (by default only the potentiometer on the drive itself is enabled) and increasing the maximum frequency (set at 50hz from the factory). Ramp up and down times are set at 10s, which is probably decent for most applications. One nice feature is that if you've wired your 3 phase motor up backwards and its spinning the wrong way you can just change the settings in the drive to swap which direction it considers forward and reverse.If you look through the reviews here most of the lower ratings are from people who couldn't find the right setting to adjust. I get it, these are not simple devices, but they're a fantastic value for those willing to dive a bit deeper to find everything they need. My only complaint would be that the fans run 24/7. It would be nice if they shut off based on load.

I am using the controller to run a 1.5 hp motor on an industrial belt sander. Sander gets daily use. Controller works well, is not prone to over heating. Instructions are a little hard to figure out for fint tuning the controller but not terrible. Overall im very happy with it

Using this to run a 3 phase Delta jointer from my single phase house power. Works absolutely great! More tweakable parameters than I could ever need. Spins up the motor really smoothly and keeps it at speed regardless of load. Even can make the motor variable speed if I wanted. Can also run it at up to 150% (200% if you adjust one of the parameters). Very pleased with it.

The remote control speed dial does not work.

I got this drive to teach myself how to control motors through VFDs. If you need a drive to control locally, it does a good job. However, I have been controlling it through the RS-485 Modbus interface. The manual only shows you how to setup the parameters to make a connection. It doesn't tell you the Modbus addresses where the pertinent information is. Through trial and error using the manuals of similar drives, I found the address to turn the motor on, turn the motor off, change frequency, and monitor drive data. Still trying to figure out the rest of the control addresses like changing rotation direction etc. I emailed Gearflag and got no response. Seaching online, I find the exact same drive and manual with a different brand name on it. Seems like it is a general purpose drive made in china sold to resellers with their brand name on it. Considering that the Gearflag store mainly sells accessories for cars and trailers, this item seems to be an oddball for their store. Which makes it understandable while they can't answer my questions about Modbus addressing for the drive they are selling.

The application is a Bridgeport mill with a 240V 3 phase motor. I've been running it for years from 240V single phase with a simple rotary converter I designed and made from another old 3 phase motor. This has been as reliable as the tides but I thought variable speed might be nice. Basically I just wanted a box with a knob I could turn to get variable frequency out.I'm afraid this isn't it. My motor runs much slower than when powered from my rotary converter, I can't get the REVERSE to work (not really necessary, as I still have the drum switch on the mill), the display has all sorts of indicator lights which are not labeled nor mentioned in the manual, and my motor now emits a high-pitched whine which it's never done before. There are some other functions which seem to be enabled by default, mainly a ramp-up/down control which I would much rather ignore. The manual is fairly useless; it has all sorts of instructions for PID controller settings, 4-20 ma control loops, etc but nothing to indicate what simple stuff - like the numerical display - is trying to say.Overall I am very unimpressed.

Easy to setup and works good. You will need to change parameter P101 to 2 to enable the remote potentiometer to function. Very happy with the drive so far.

I was having trouble getting my spindle to work with this vfd. I contacted the seller and the were very responsive and helpful. My spindle troubles turned out to be with the spindle itself, not the vfd. Customer service is better than expected and this little vfd performs exceptionally well. Very satisfied customer.