Get a motor spinning quickly with this simple introduction to setting up a WEG VFD CFW300 (Variable Frequency Drive). This is the BEST VFD for your budget but with high end features like Dynamic Braking, Fire Mode, PID, 65,000A SCCR, Zero Stack foot print, Multi-Speed, etc and is even cULus listed! And it is available in single phase up to 3 hp!
In this video we’ll use a 1hp WEG CFW300 drive to control a motor from a single phase 120 Volt supply. These are the parameters we are going to set and the values we are going to use in this demo. Let’s quickly walk through setting these just so you can get a feel for the flow of entering parameters. Before doing anything, let’s reset the drive to factory default so if you’re following along we are both starting at the exact same place. Press the P button to get to the parameters and scroll to Parameter 204. Hit P again to change the parameter to a 5 to reset the drives parameters to factory default for 60 Hz and press P to accept it. Scroll to parameter 401 which is the Motor’s rated current – ours is 3.2 amps so we enter that and press P to accept it. Parameter 402 is the motors rated speed, we’ll modify that to 1725 and hit P to accept that. Parameter 403 is the motor’s max frequency, 60Hz is what we want so hit P to accept that. Scroll to the acceleration parameter number which is 100. Hit P to change it – I’ll change it to 2 seconds – and Hit P to accept that value. Scroll to the next parameter on our list, hit P, and change the deceleration to 2 seconds and hit P to accept that. Scroll to the Min Speed Parameter. Let’s make that 4 Hz. Hit P to accept to accept that. Scroll to the max speed parameter. Hit P – let’s change our max speed to 30 HZ. Hit P to accept that. Scroll to Parameter 2 which shows us the drive’s output frequency and press the RUN/STOP key to start the motor. And sure enough the drive ramps the motor to the 4Hz minimum output frequency we just entered. Perfect. If I increase the output frequency, then the motor responds accordingly. Of course, since we set the max frequency to 30 Hz, the drive won’t let us go past that. Exactly what we expect. To view the motor’s current, press P to exit the frequency parameter, go to parameter 3 which is the motor current and press P to see the value. This bar graph down here is also showing the motor current because the bar graph parameter – which is parameter 207 says display parameter 3 – the motor’s current. Parameter 223 controls Forward and Reverse. Stop the motor, change it to a 1, hit P to accept that and now when we run the motor it rotates in the opposite direction and the rotation indicator up here changes direction. Well, that’s all there is to configuring a WEG Variable Frequency Drive. Here’s a couple things that will help you get up and running quickly: In the box the drive comes in, there is a little plastic bag that has a “Quick Installation Guide” in it. Hang on to that because it has all kinds of information that will help you get up and running quickly. Mechanical dimensions. A drive quick reference table showing all drives in this family at a glance. Wiring information. I/O pinout and usage. Compliance information, everything you need to know about the keypad and display. The sequence for entering parameters. This is literally the first several steps of the example we just did in this video. I just took that and modified a couple numbers and added a few more parameters. There’s technical specs, a list of the most common parameters – I love that – and a list of the most common fault and alarm codes. Etc. So definitely grab that little plastic bag and put it somewhere safe. If you DO lose it, then you can always download it and all the user manuals for free from the AutomationDirect.com website. You can also enter parameters, program the built-in SoftPLC and even monitor the drive’s performance using the WEG Programming Software which you can also download for free from the AutomationDirect.com website. And finally, be sure to check out all of our drive videos at AutomationDirect.com/videos or just click on the video button. There are over 1000 videos here so just search for what you want to get all kinds of video tutorials on AutomationDirect products. Or better yet, go to the Video Cookbook and click on the AC Drives chapter to only see videos about drives. We add new videos all the time so check back often. Well, that ought to be enough to get you going, but we just scratched the surface of all the things you can do with this drive in this video, so click here to learn more about the WEG Variable Frequency Drive. Click here to learn about all of AutomationDirect’s free support options and click here to subscribe to our YouTube channel so you will be notified when we publish new videos.