Huanyang VFD RS485 issue

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HFWoodworks
Posts: 3
Joined: Sat Oct 30, 2021 8:57 pm

Huanyang VFD RS485 issue

Post by HFWoodworks » Tue Nov 02, 2021 8:07 pm

Hello,

I just received two controllers to set up with two Mega V XLs. On the CNC I setup first, everything is running great. I set up the RS485 communication to the Huanyang VFD with no issues on that system. M3/M5 commands work as they should.

Fast forward to the second CNC. Everything works as it should, except the RS485 communication to the Huanyang VFD. In the Tool panel, it shows that it has Timedout. Double and triple checked the connections to the RS+ and RS- connections and on pin 13 and 14 on the DB25 breakout. Replaced the wiring to eliminate a break in the wire somewhere. Have gone through the VFD parameters multiple times. Going to have my wife walk through every parameter on the working system as I run through the parameters on the problem child to verify everything is identical. Both are 110v 1.5kw, so that makes it easy to run through all the parameters.

Spent the last 4 hours pouring through the manual, trying to look around the web, verifying the wiring of the two CNCs are the exact same in the VFD and DB25 breakout.

Any thoughts or advice on what to look for would be helpful.

Thank you,
Jason
Hold Fast Woodworks

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Doug
Posts: 343
Joined: Fri Feb 02, 2018 4:56 pm

Re: Huanyang VFD RS485 issue

Post by Doug » Wed Nov 03, 2021 6:12 pm

Since you have two of everything, you might want to try switching the controllers to see if the problem follows the controller or the VFD.

HFWoodworks
Posts: 3
Joined: Sat Oct 30, 2021 8:57 pm

Re: Huanyang VFD RS485 issue

Post by HFWoodworks » Wed Nov 03, 2021 11:10 pm

Hey Doug, thanks for the reply. I tried that after a while of thought. Still no response on the VFD. I am guessing the RS485 input on the VFD is dead. I don't know enough to go poking around the inside of the VFD to verify. Does happen from what I can see poking around on forums. Replacement VFD shows up later today, hopefully that solves it.

On the CNC that has all systems working, it is running as smooth as butter. The MillRight controller was nothing but problems, dropping connection a few minutes into a job being the biggest. Next up is some IOT relay switches to power on the VFD and Water pump.

Thank you,
Jason
Hold Fast Woodworks

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Doug
Posts: 343
Joined: Fri Feb 02, 2018 4:56 pm

Re: Huanyang VFD RS485 issue

Post by Doug » Thu Nov 04, 2021 6:49 am

Let me know how it goes with the new VFD.

HFWoodworks
Posts: 3
Joined: Sat Oct 30, 2021 8:57 pm

Re: Huanyang VFD RS485 issue

Post by HFWoodworks » Thu Nov 04, 2021 4:19 pm

Well it was definitely the VFD. Swapped out the new VFD, changed the control parameters and it was off and running. I guess now I have a manual control only VFD sitting around, time to buy a 3ph 3000rpm motor to put on my vintage drill press and update it to have speed control.

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Doug
Posts: 343
Joined: Fri Feb 02, 2018 4:56 pm

Re: Huanyang VFD RS485 issue

Post by Doug » Thu Nov 04, 2021 4:23 pm

👍

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