I run the VFD (that's never varied) on my old Monarch lathe without using braking. It has terminals to connect a braking resistor but for this machine there's no need. What I find crazy is that a simple, single function device that only converts single phase to three phase, without all the fancy features of a VFD, costs so much more than a VFD. When a 3HP VFD for 220~240VAC input can be had for under $300, why isn't a version that does absolutely nothing, no adjustments, no variation, no programmability, but do the phase conversion not cost well under $200 instead of a whole lot more? If some company produced a box that was just a phase converter with an on/off button and terminals for a remote switch as the only 'extras', and put a $199.99 price on it, they'd be hard pressed to keep up with demand.
On Tuesday, January 2, 2018, 9:33:50 AM MST, Dave Cole <linuxcncro...@gmail.com> wrote: So what exactly do they do when the bus voltage rises during decel ?? Or is there no decel control at all? I've never seen a drive without braking circuitry and DC bus voltage control. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users