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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
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.
Maybe but I've not found it in the 'documentation'. Would simplify things if it did.
Episode 2, just making it better all round . . .
https://youtu.be/nSVjT4hpeaE
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)Quote:
Originally Posted by EddyCurrent
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)
I decided to look into the inverter parameters . . .
https://youtu.be/rUjTy3utnsc
Prototype PCB!
https://youtu.be/cuSpk5dGZ4c
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
New PCB boards to split the LCD display and the processor. Went smoothly apart from the bits that didn't.
https://youtu.be/uu9BClLFsGY