fwiw, a 3-phase motor rotates with the phase order it gets. As mentioned, the wrong direction would presumably be a very bad thing for disk drives, so they don't let it happen. Anyone else's guess on the rest of the electronics.
sas On Mon, Jun 22, 2020 at 12:01 PM William Donzelli <wdonze...@gmail.com> wrote: > All three phase IBM stuff from that era I have seen have phase > rotation sensors, and will simply not go through the proper power > sequence unless everything is fine. > > -- > Will > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
