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General Mach Discussion / A axis rotary problem, strange stalling issue
« on: June 01, 2015, 02:54:53 PM »
I have a CNC router dedicated rotary machine recently installed running latest mach3. The A axis is the rotary and then the long axis is Y fixed on the centreline and Z is up and down. 8" cnc rotary table with nema 34 motor, its all pretty conventional stuff.
wrap programs are create programs in vectric
I am getting the rotary axis motor stalling at certain points in programs each and every time a program is run through, it ruins work. The other 2 axis are the same drives/motors so I have swapped the drive over and eliminated that, put a new nema34 motor on and eliminated that, unplugged the Y and Z and ran it through (still stalls), I also ran it with zero load on ie uncoupled from the rotary table and you can actually hear and feel it stall with absolutely nothing connected. I have come down to either the code or mach3 settings or a combination. It is nothing mechanical or electrical on the system.
The code is attached. On mach3 acceleration of A axis is set to 300 and velocity is 2000. Units are all in mm. In particular I get audible stalling at several points, one of the most obvious is at lines N1470 - N1480. Any help much appreciated.
wrap programs are create programs in vectric
I am getting the rotary axis motor stalling at certain points in programs each and every time a program is run through, it ruins work. The other 2 axis are the same drives/motors so I have swapped the drive over and eliminated that, put a new nema34 motor on and eliminated that, unplugged the Y and Z and ran it through (still stalls), I also ran it with zero load on ie uncoupled from the rotary table and you can actually hear and feel it stall with absolutely nothing connected. I have come down to either the code or mach3 settings or a combination. It is nothing mechanical or electrical on the system.
The code is attached. On mach3 acceleration of A axis is set to 300 and velocity is 2000. Units are all in mm. In particular I get audible stalling at several points, one of the most obvious is at lines N1470 - N1480. Any help much appreciated.