Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: freshwatermodels on April 19, 2009, 07:53:00 PM
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I just completed building a gantry router with two lead screws and steppers on the X axis. I set up the A as a slave to X and am having poblems with the motors not actiong in sync.
Any insight as to what I am doing wrong?
Jack
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Are all the motor tuning settings exactly the same?
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Gerry,
Thanks for your reply!
Some details first.
Router built from 1/2 and 3/4" aluminum tooling plate. 42" X 16" X 6" work envelope. Linear ball bearings and Thompson ball screws/nuts on all axis. Motion seems to be very smooth and easy when moved by hand.
The steppers are 269oz from Xylotex. The controller is a 4 axis unit from Mechatronics. 24 volt power supply. Limit switchs installed. I am using a digital multimeter. VREF is adjusted to 4VDC.(Max reccomended vref is 5VDC). PFD voltage is adjusted to reccomended 2.5VDC.
Running Mach 3. With motor tuning set at 7878 steps per , 79.98 velocity , 20.182788 accelleration.
Y and Z axis perform very smoothly. X axis has A motor slaved to X. X axis motors seem to stall or don't move at all making high pitched buzzing noise. When X does move it seems to move slowly.
I don't understand what the PFD does and wonder if it needs adjustment???
Thanks,
Jack