Am Mittwoch, dem 06.05.2026 um 23:35 +0300 schrieb Viesturs Lācis: [...] > So I have been trying to get STMBL drive to work with that servomotor > at least with A and B channels from encoder without index. > I have connected 24VFC for logics power, 340VDC power for motr, motor > cable and encoder cable to drive and I have plugged USB cable for > Servoterm app. I do not yet have it connected to LinuxCNC (I have not > tried to load smart-serial module in drive config although it is > visible that I have LinuxCNC open in background - that is for > enabling > machine power).
[...] > I spent a lot of time trying to figure it out and providing separate > 24VDC logic power improved a lot (now it did not disconnect in a > split > second): https://www.youtube.com/watch?v=pCc_dh2BObo What do you mean with "separate"? Separate from what? USB disconnect when enabling power sounds like EMI problems. Maybe some EM spikes couple into the USB cable and cause problems. Does dmesg show anything? Try using different cable, cable with choke / ferrite bead, check for potential difference between PC ground and stmbl logic ground, move things around, check shield on servo motor cable, ... -- Robert Schöftner <[email protected]> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
