DIY spindle stall monitor

I finally get the controller installed . . . after more tinkering!
https://youtu.be/hDzTCiMsE7Y

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.

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

I had another idea, seems so obvious now . . .

https://youtu.be/bcbtGN6m8Rs

Thanks for embedding the video links Lee!

Time to test this thing out for real !


https://youtu.be/3iZA39cHo2g

Without going back over your design decisions, was there a reason not to use a "spindle at speed" or "spindle stalled" signal from the inverter, rather than have to create your own detection system? Sorry if I misunderstood the process.

On my large milling machine, nothing's going to stall the spindle unless I'm running a large face mill, in which case the axis drives would stall before the cutter broke. Smaller cutters go ping if they get gummed up.

That's an impressive machine you've built there, with great attention to detail!

Quote:

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Originally Posted by Muzzer

Without going back over your design decisions, was there a reason not to use a "spindle at speed" or "spindle stalled" signal from the inverter, rather than have to create your own detection system? Sorry if I misunderstood the process.

On my large milling machine, nothing's going to stall the spindle unless I'm running a large face mill, in which case the axis drives would stall before the cutter broke. Smaller cutters go ping if they get gummed up.

That's an impressive machine you've built there, with great attention to detail!

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I looked into the inverter controls in one of the earlier videos and it doesn’t seem to support any of those features. But if I’ve missed something let me know. Inverter is the usual Huanyang 1.5kW models. Thanks

Yes, those are the sort of features that get missed off some of the clone VFDs. You can get a fully featured 2.2kW Yaskawa GA500 with in-built EMC filtering and a plethora of features such as spindle at speed for a little over £200, which would have saved a lot of messing about, albeit without the challenge and fulfilment of developing something like this yourself.