Hello,

I have recently built my own CNC machine and after bits of advice from the forum its been working an absolute treat!

until...... It has just randomly started to stall whilst moving up and down the x axis and then recover shortly after. This then goes on to offsetting the x axis by anything up to 100mm. I can't seem to replicate it as it happens during different events. Which is making problem solving difficult.

I have read a few other threads on the site but its rather complicated so I may need a little 'hand holding' to get to the solution.

I'll just mention the x-axis details as this is where the problem is:
Nema 34 8.7nm stepper motor
Stepper motor driver 6.0A 80v micro stepping cw8060
UC100 Motion controller
UCCNC software
CP0-10v Break out board
480W psu 48V 10A CNC power supply (also providing power to 2*Nema 23nm Stepper motors via cwd556 5.6A drivers(y and z))

Having read a few other threads, from very basic principles - its either mechanical or electrical.
Mechanical - I am going to have my lunch and then go and remove the motor and turn the ball screw by hand to make sure that this isn't a case of mechanical interference, dirt preventing motion.

Knowing only a little about electrics - is this a torque problem? Would it be the case that the Stepper motor can't get the required current? when changing direction. Should I power this stepper from a separate PSU? If this is the case, what logic causes the x stepper to stall and not the y or z (I believe the term is called a brown out). I briefly had a multimeter on the psu tails to the cw8060 when it stalled but I didn't see any voltage drop.

All help greatly appreciated!

cheers
Andy.