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General Mach Discussion / "Safe Z off" + "go to zero" = lost steps
« on: November 12, 2013, 04:28:48 AM »
Hi!
I've struggeled with this problem for few days. I use Mach3 to drive stepper motor in my stress testing device, just one axis. I've disabled splindle outputs, other axis and also "safe z" feature as I don't need them.
I'm running at 100KHz, motor is tuned to 750 RPM (1500mm/min with 2mm screw) with acceleration "300" (up to 500 works nice) driver is providing 1/8 step division (800 steps/mm, 1600 steps/rotation) It is able to keep that speed with axis loaded with 150N. The problem was that every time I've pressed "go to zero" I recieved a message like "safe Z turned off ignoring...." and I instantly lost steps even with acceleration 100 and speed reduced to 500rpm (1000mm/min). Driver and Mach kept going but motor just made some noise.
Then I've enabled Safe Z again (which is useless as I have no Z axis) and problems dissapeared.
What happened? Does Mach3 lose steps on error messages?
I've struggeled with this problem for few days. I use Mach3 to drive stepper motor in my stress testing device, just one axis. I've disabled splindle outputs, other axis and also "safe z" feature as I don't need them.
I'm running at 100KHz, motor is tuned to 750 RPM (1500mm/min with 2mm screw) with acceleration "300" (up to 500 works nice) driver is providing 1/8 step division (800 steps/mm, 1600 steps/rotation) It is able to keep that speed with axis loaded with 150N. The problem was that every time I've pressed "go to zero" I recieved a message like "safe Z turned off ignoring...." and I instantly lost steps even with acceleration 100 and speed reduced to 500rpm (1000mm/min). Driver and Mach kept going but motor just made some noise.
Then I've enabled Safe Z again (which is useless as I have no Z axis) and problems dissapeared.
What happened? Does Mach3 lose steps on error messages?