Dip Switch settings on the M542 stepper motor drivers

[JAZZCNC]

Dean
I use only good quality digital drivers like Leadshine EM503 and CSMIO/IP-M controller.
I agree some driver can't cope with accuracy and repeatability.
For example this heap DM542
cost 23% price of Leadshine EM503
with exactly same parameters.

I personally tested both drivers under same travel speed for torque value.
Motor 8 leads connected parallel (low inductance and higher torque @ higher speed)

Results:
Cheap driver was stalling with much less speed and can't hold same torque - hence the price difference.

My observation regards torque drops vs micro stepping were not according to what I knew from data.

I disregards motors tested on bench - only connected to the machine via 5M HTD belt and spindle not running.
There are few YT clip showing same experiment. I found 16MS 3200 will not drop torque to ~10% of nominal

I think driver send more current to winding when micro-steps are used hence motor can lift much more than 10% of theoretical value.
Will try to make video when get proper torque gauge display or mini scale

Tom, I'm not sure of the point of this post as I was only pointing out that Micro stepping shouldn't be thought of as increasing resolution because it doesn't.

Regards the two drives then I've fit 100's of the EM series and a fair good number of the DM series and the main difference is how the EM handles the motor resonance, which is why you will be seeing a difference on what I presume is the same motor with the same voltage, etc. The EM series is much better when it comes to handling resonance and light years better than DM copies that are often bought.