On Sun, 22 Oct 2017 17:37:40 +1100 Erik Christiansen <dva...@internode.on.net> wrote:
> On 21.10.17 20:47, Nicklas Karlsson wrote: > > > You do want isolation between the high voltage motor and the digital > > > controller. But if you already have this you don't need another layer. > > > > Yes, I forgot for some reason I got depressed and didn't thinkg about > > adding this isolation barrier. > > If you use a little RS485 Tx/Rx chip at each end, then that'll absorb 7v > of ground offset without further ado. Yes balanced signal RS485 is good. I changed to isolated gate driver and then there is no need for isolation on SPI. Then distance is longer or network larger I could add an Ethercat module or use micro controller with builtin Ethercat. ------------------------------------------------------------------------------ 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
