Best thing is the digitally software-programmed ones. You program in the exact current, microstepping, whether it uses the Enable line, whether it enabled the automatic stall detection...
And you can hit "auto-tune" on the motor, it takes over for a second and stimulates the motor and gets feedback and you can pull up a graph of its stability. You can set it for a midband self-generated test step sequence and manually adjust the midband resonance dampening. Honestly could not find anything to dampen. Already totally stable. I use the Leadshine AM882 and A882H (higher voltage). The DM556 just seems to be an American-market rebranding of the AM882 with a somewhat higher price tag. Bottom line, for the AM882 at least, yes, "super nice", "worth it at any price", "would never go back". Danny ---- Chris Albertson <albertson.ch...@gmail.com> wrote: > Has anyone used the Leadshine digital stepper drivers? Do they > really provide "smoother operation with less heat"? > > I need to buy a stepper motor controller and notice that Leadshine > offers three series of drivers. The most common cheap driver for a 4 > amp motor is the M542. But there is also the EM503 and DM556. They > offer a EM, DM and M series of drivers. > > The DM and EM series have a digital DSP controller and they claim a > mode where the driver tests the connected motor for both DC resistance > and inductance and then adjusts the current/speed parameters to suit. > The motor shaft vibrates while the test is underway (likely the > controller is placing a small AC signal in the motor to measure > inductance) > > The DM and EM series can also reduce the current going to the motor > after it has been at zero speed for one second, to reduce heating. > > The DM and EM series have an RS-232 port so the parameters > (resistance, inductance and idle current reduction) can be set from > software rather then auto-tuned. > > In addition the EM series driver can detect skipped steps without an > additional sensor and raise a fault line that (I assume) > EMC/MachineKit can detect. > > > -- > > Chris Albertson > Redondo Beach, California > > ------------------------------------------------------------------------------ > 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 ------------------------------------------------------------------------------ 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
