Using the drive's built-in HMI/Keypad for speed control while i remote mode is easy ... once you see how it si done! Check this brief tutorial video to see step-by-step how to do it. This is the best VFD, with a super low cost, 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!
You can download the software for free at www.automationdirect.com
This drive is setup to have forward … and reverse controlled by an external switch and a drive speed controlled by the HMI in REMOTE mode. Let’s see how to do that. First, let’s reset the drive to factory default so we are starting in the exact same place. I went ahead and set parameters for my motor – yours will probably be different. I also shortened the ramp times to help expedite this video – that won’t be a problem here because I don’t have a load on the motor. My Computer is connected to the drive via this optional USB module and I’ll be using the free WPS software to set this up because it is easier for you to see what I am doing. You can do everything we'll do here from the drive’s HMI, so you really don’t have to purchase the USB Module or use the free WPS software to do this. And just to be clear, when I say HMI in this video, I’m talking about the Drive’s built-in HMI keypad – this guy. I’m using the HMI terminology because that’s what it is called in the manual and the WPS software. I just want to be sure you understand I am not talking about an AutomationDirect c-more or c-more micro HMI. We’ll do that in a different video. I’ve already setup a configuration and resource and I am connected to the drive. Let’s bring up the parameter list. We want to be in REMOTE mode, so let’s search for REMOTE and we see the remote local selection is parameter 220 and it defaults to local. So, let’s change that to REMOTE. I have this selector switch setup as a fwd-stop-rev switch and connected to the drive like this using the switches normally open contacts. So, we need to tell the drive DI1 is Forward and DI2 is reverse. So, I’ll search on DI and we see DI1 defaults to Run/Stop, so we’ll change that to Forward. And DI2 defaults to direction, so we’ll change that to reverse. Great. Now we just need to make sure the remote speed control is via the HMI, so I’ll search on remote and we see that the reference speed is currently being driven by the analog input. Let’s change that to the HMI. We’re done! Let’s try it. Sure, enough I can control the forward … and reverse directions of the motor and the HMI controls the speed of the motor in REMOTE mode. Perfect. Could I do this with the switch doing a simple run-stop? Sure! Just change DI1 to RUN STOP and DI2 to direction and wire the two switches like this. Now this switch controls run stop and this switch controls direction. Notice that the direction switch only changes the HMI rotation indicator when the drive is running. If the drive isn’t running, the indicator doesn’t change. One side note: If we search on remote, we see in remote mode run/stop defaults to being controlled by the digital input’s, so we didn’t need to change that, but you should verify that it set the digital inputs anyway just to make sure someone else didn’t change it. In contrast, if we search on LOCAL, we see it’s run stop defaults to the HMI control. So just beware they are different. Here is a summary of the parameters we used to do this. Since we really only changed 4 parameters, this would be easy to do from the drive’s HMI. I prefer to use the WPS software because it is so easy to search for and change the parameters I need. Click here to learn more about the WEG CFW300 variable frequency drive. Click here to learn about AutomationDirect’s free award-winning support options and click here to subscribe to your YouTube channel so you will be notified when we publish new videos.