VFD to Mesa 7i76e with LinuxCNC problem
04 Jun 2021 16:37 - 04 Jun 2021 16:38 #211168
by teebee
VFD to Mesa 7i76e with LinuxCNC problem was created by teebee
I want to make a CNC lathe. For my spindle I use a 3-phase asynchronous motor. To make it spin I use a variable speed drive.
VFD
However, I do not manage to make the motor turn with LinuxCNC.
In the attachment you will find my wiring diagram. Does anyone know how to do this?
However, I do not manage to make the motor turn with LinuxCNC.
In the attachment you will find my wiring diagram. Does anyone know how to do this?
Last edit: 04 Jun 2021 16:38 by teebee.
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04 Jun 2021 17:18 - 04 Jun 2021 17:20 #211170
by PCW
Replied by PCW on topic VFD to Mesa 7i76e with LinuxCNC problem
I can't read that pdf for some reason.
Is there a better manual link?
Normally you would need to set the VFD into DIR/RUN mode
(as opposed for FWD/REV mode) to use it directly with the 7I76's
DIR/ENA outputs.
You should also verify that you can operate the VFD by just connecting
the inputs appropriately without involving LinuxCNC or the 7I76 at all.
Is there a better manual link?
Normally you would need to set the VFD into DIR/RUN mode
(as opposed for FWD/REV mode) to use it directly with the 7I76's
DIR/ENA outputs.
You should also verify that you can operate the VFD by just connecting
the inputs appropriately without involving LinuxCNC or the 7I76 at all.
Last edit: 04 Jun 2021 17:20 by PCW.
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05 Jun 2021 06:27 #211197
by teebee
Replied by teebee on topic VFD to Mesa 7i76e with LinuxCNC problem
maybe this link will work:
VFD
Is it possible that I can't put my VFD in DIR/RUN mode or can every VFD do this?
Is it possible that I can't put my VFD in DIR/RUN mode or can every VFD do this?
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08 Jun 2021 14:12 #211512
by andypugh
Not every VFD can do it, but it looks like setting register 178 to 10 is part of it.
Look at the bottom of page 118, that shows both FWD / REV and RUN / REV diagrams.
Replied by andypugh on topic VFD to Mesa 7i76e with LinuxCNC problem
maybe this link will work: VFD
Is it possible that I can't put my VFD in DIR/RUN mode or can every VFD do this?
Not every VFD can do it, but it looks like setting register 178 to 10 is part of it.
Look at the bottom of page 118, that shows both FWD / REV and RUN / REV diagrams.
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