>From: Jon Elson [mailto:el...@pico-systems.com] > > On 03/04/2017 11:37 AM, Ben Potter wrote: > > Yes, but the same drive connected to the X motor/tacho also runs at max speed. Have not tried the X drive connected to the Z motor. > Don't, until you have checked the motor for intermittent shorts to ground. (Since you put the drive back, and it doesn't blow fuses any more, but spins, this is a bit less likely, but you don't want to risk popping any more amplifiers. > > Most likely it was a transistor that failed to the shorted condition, that has now been blown open.
Turning the motor by hand with the multimeter attached gives me either infinity, or 30-35 Mega Ohms between the power input and ground. Can't find a dead short - but I'm surprised that I'm getting _any_ path there. ------------------------------------------------------------------------------ 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
