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routercnc
10-05-2025, 09:05 PM
I've been wanting to do this project for a while. I wondered if it would be possible to build a spindle monitor to check if it has stalled out and then e-stop. Hopefully this would stop it breaking end mills. Sounds easy in principle . . .

https://youtu.be/QuVHUmiW8xo
EddyCurrent
17-05-2025, 04:33 PM
I would exxpect the VFD to have a motor stall function in it's parameters, the ABB one I use certainly has although I have not tested it in practice.
routercnc
18-05-2025, 03:08 PM
Maybe but I've not found it in the 'documentation'. Would simplify things if it did.
routercnc
18-05-2025, 03:09 PM
Episode 2, just making it better all round . . .

https://youtu.be/nSVjT4hpeaE
EddyCurrent
19-05-2025, 10:50 PM
These inverter parameters look interesting;
PD118, PD119, PD120, PD121, PD122, PD123, PD124, PD125
routercnc
20-05-2025, 02:57 PM
These inverter parameters look interesting;
PD118, PD119, PD120, PD121, PD122, PD123, PD124, PD125

Reading them now. Looks interesting! Worth experimenting with to see if it really can detect a stall through current monitoring and then trip the onboard relay (although I think that is omitted on my model, although I might be mixing it up with the inverter inspection I did for the drill press project)
External current monitoring did not seem to show much but maybe internally it is reading a different part of the circuit.

Might turn out to be the biggest waste of time project (except for the fun and learning)
routercnc
24-05-2025, 09:52 PM
I decided to look into the inverter parameters . . .

https://youtu.be/rUjTy3utnsc
routercnc
01-06-2025, 04:29 PM
Prototype PCB!

https://youtu.be/cuSpk5dGZ4c
routercnc
15-06-2025, 11:21 AM
More developments, some hardware but mostly software including storing user values in non-volatile memory. Also a look ahead to the next PCB revision . . .


https://youtu.be/O_N773pcSwo
routercnc
22-06-2025, 08:16 PM
New PCB boards to split the LCD display and the processor. Went smoothly apart from the bits that didn't.


https://youtu.be/uu9BClLFsGY
routercnc
27-07-2025, 01:53 PM
I finally get the controller installed . . . after more tinkering!

https://youtu.be/hDzTCiMsE7Y
Lee Roberts
05-08-2025, 06:50 PM
Thanks for sharing this @routercnc, love seeing this kind of stuff come through on the forum, special hats off to you for always going the distance.
routercnc
25-08-2025, 11:35 AM
Time for episode 8 - Hall effect sensors. Should be fairly straightforward . . .


Can't seem to paste video direct, forum buttons have disappeared! Youtube link below:
https://youtu.be/gKwJzVpfJPk