VFD for MESA

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14 Nov 2016 14:55 #82780 by timmert
VFD for MESA was created by timmert
Hi,

I'm busy converting a lathe to CNC.
For the spindle motor I will use a 1.5KW or 2.2KW 3 phase motor
But to adjust RPM I wil need a VFD (1 phase in 3 phase out).

My control PC is using a MESA 6i25 and 7i76 card

I hate electronics, so I don't know lots about it. And it's a bit hard to find out what I need to control the RPM with LinuxCNC.
I read something about 0-10v signal, modbus?

Are there any dummy proof VFD that that work 100% with LinuxCNC?
Or which things do I need to check if a VFD can work with LinuxCNC and my MESA board.

Thanks

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14 Nov 2016 15:40 #82790 by Todd Zuercher
Replied by Todd Zuercher on topic VFD for MESA
Unfortunately nothing in this world is completely stupid proof.
But there are lots and lots of VFDs that are 100% compatible with Linuxcnc. (you will probably have a hard time finding one that isn't.)
With a 7i76 set up I'd suggest just sticking with a standard analog set up, that almost any drive will support, and the wiring will be pretty much the same from one drive to another.
You will be connecting a start/stop wire, a reverse wire (if you want or need one), a comon wire, 2 wires for the analog, and probably a ground. You might also want a vfd fault, or at speed digital output signals from the drive, but they aren't nessisary.

Modbus control can open up a lot more features to the drive, but it can be a lot more complicated to configure, especially if the drive doesn't have a driver configured for it in Linuxcnc already, and you would need to get a serial adapter of some sort for it.

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14 Nov 2016 15:59 #82791 by timmert
Replied by timmert on topic VFD for MESA
Thanks for your reply
I just found this video:

Seems pretty easy? Since the driver is already inside LinuxCNC.
Using a USB-RS adapter, solder two wires to it and connect it to the VFD.
And some small changes to the HAL

Besides there is lots of info about these Huanyang VFDs. I think I will order one.

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