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Topics - Lima Delta

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General Mach Discussion / Mach 3 Stepper Motor stall
« on: April 10, 2018, 07:33:46 AM »
Hi First post but been lurking on the forum for a while now.
Just a bit of back ground, I running my own CNC router cutting service business in Cape town. I have had my first machine (3000mm x 2000mm 3 axis Unincam CNC router, Vcarve CAM & Mach 3) for the last three and a half years, and had to learn how to run, trouble shoot and fix my self after the after sales service from the supplier proved disapointing.
Anyway just brought a new machine into the workshop and am having a couple of issues that I am hoping you guys will have some ideas on...
The new machine is a Chinese built machine but with the electronics replaced wit better quality (see attached). Its basically a 1200mm x 1200mm table, Ball and screw drives on XY&Z  with Nema 23 motors (no slaves). Electronics are PC motion control though LPT, Leewen BOB, and Gecko 203 drivers.
Problem is, I got the machine set up and calibrated as per the mach 3 manual, Machine happily jogging all ove the table at mav velocity of 4000mm/min but when I put in a sample Gcode from Vcarve with Mach 3 Arcs ATC (mm) post processor (100mm Circle, Square & triangle profile cut) the machine stalls out the stepper drives in the first pass on the square. Specificaly it starts the cut at the bottom left cornber of the square runs up the y axis then seem to stall at the turn on to the x axis. the machine is not actually cutting as I have set the z 20mm above the surface of the material.
I have attached a screen shot of the Mach three page at the point were the motor stalls...every time at the same line in the Gcode. Have also uploaded the Gcode text file and XML for the set up.

This machine was happily running at the previous owners shop and has an almost identical electronics set up as my first machine.

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