Made a few inverter cards myself and chose standard TO220/TO247 instead of some kind of module. There are thousands to choose from in different kind of voltages up to 1.2kV and currents up to around 100A, also different kinds MOSFET/IGBT/SiC/GaN there choice to some degree depend on voltage.
> That's a point in favor for discreet components and standard ICs over > special/custom ICs. Very little worry about having to alter a design or > things becoming unfixable due to a fancy chip being discontinued. > I forget how many $K I was quoted from a manufacturer to pop out one new late > 90's vintage 120VDC servo amp, but still amazing that every component (or > close enough) was still available. But it was less expensive to buy three big > steppers more powerful than the old servos, and the drivers and power > supplies for less than the cost of one vintage servo amp copy. > > On Thursday, July 16, 2020, 12:21:52 AM MDT, John Dammeyer > <jo...@autoartisans.com> wrote: > > -----Original Message----- > > From: andrew beck [mailto:andrewbeck0...@gmail.com] > > Sent: July-15-20 10:03 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Retrofit Candidate? > > > > John do you have any details on the new stumble drives? > > > As far as I know they are still testing with now discrete transistors instead > of the driver pack that was discontinued shortly after they produced it. I > have 3 of the STMBL drives and a couple of spare part drivers. One STMBL on > the spindle and I was thinking replacing the HP_UHUs for the two brushed DC > Servos. However, couldn't get rid of the whine so went back to the HP_UHU. > > But then I've also got 2 extra HP_UHU drives that are partially assembled. > And now a two US Digital encoders that were replaced with CUI that work > better. > And then there's the extra Shumatech DRO-350 kit still in the box and the two > DRO-550 of which I only assembled one but haven't used yet. > > Oh and the 400W Bergerda AC servo. Ran the X axis really nice but nowhere to > mount the drive in the present cabinet. > > Oh the list goes on.... > > Cheers > John > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
