3311
General Mach Discussion / Re: getting no motion
« on: September 05, 2011, 08:11:04 PM »
It would be the distance / .010". You moved one direction say .2", actualy you should move twice in the first direction just to make sure that all play is taken out.
When you move the opposite direction your off by say .010" and that is due no linear axis movement. The motor will be tuning but the axis movement is just taking up
the slack in the system.
You can also just move in one direction and then jog in say .001" increments the other way and you will see that it took 10 jogs @.001" to get movement.
There are some controllers that required the backlash be set in pulses but that is not the case in Mach.
My 50-50-50 rule which you may want to consider.
50% - The max velocity is 50% of where your steppers will start to skip
50% - Set the shuttle Wheel setting in configuration to .0050 to .050 ( .5 too slow )
50% - Backlash speed
Not sure how the above works for servos.
RICH
When you move the opposite direction your off by say .010" and that is due no linear axis movement. The motor will be tuning but the axis movement is just taking up
the slack in the system.
You can also just move in one direction and then jog in say .001" increments the other way and you will see that it took 10 jogs @.001" to get movement.
There are some controllers that required the backlash be set in pulses but that is not the case in Mach.
My 50-50-50 rule which you may want to consider.
50% - The max velocity is 50% of where your steppers will start to skip
50% - Set the shuttle Wheel setting in configuration to .0050 to .050 ( .5 too slow )
50% - Backlash speed
Not sure how the above works for servos.
RICH