On Mon, 2017-05-22 at 11:53 -0700, Chris Albertson 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. > >
With my Leadshine DM drives I have set the P parameter to 1000, at higher P values (6000 or so) the shaft vibrates and makes acute sounds ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
