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General Mach Discussion / CNC stalling on long moves
« on: May 16, 2020, 03:03:01 PM »
I have a 6040 CNC mill running stepper motors and MACH3. Running since 2016. Last week all was ok cutting production parts.
All parts passed inspection.
This week having problems that are NOT Mach3 related but I think I'll need Mach3 help with settings to help isolate the problem.
WIN7. USB port
Park is back left of the machine.
0,0,0 is front, left, top of the material.
If I jog the unit using the keypad and the jog rate is set to 50%. I can move about just fine.
If I load a program and tell the machine to go to zero the y move comes up short. Should be about 24" but is 3,5,7" approx short.
MACH3 thinks y is at zero. X and Z have no problems.
This problem can also comes up running a program. Some long moves are from the back of the material to the front. And same short moves take place.
It appears like the stepper is stalling and then MACH3 says we're done with the move. So several seconds on moving never took place.
I believe it's a stepper motor issue. What setting in MACH3 could affect this situation.
Slow everything down and see what happens?
Are there any internal feedback options that would get in the way. Monitor on velocity?
Any troubleshooting suggestions.
All parts passed inspection.
This week having problems that are NOT Mach3 related but I think I'll need Mach3 help with settings to help isolate the problem.
WIN7. USB port
Park is back left of the machine.
0,0,0 is front, left, top of the material.
If I jog the unit using the keypad and the jog rate is set to 50%. I can move about just fine.
If I load a program and tell the machine to go to zero the y move comes up short. Should be about 24" but is 3,5,7" approx short.
MACH3 thinks y is at zero. X and Z have no problems.
This problem can also comes up running a program. Some long moves are from the back of the material to the front. And same short moves take place.
It appears like the stepper is stalling and then MACH3 says we're done with the move. So several seconds on moving never took place.
I believe it's a stepper motor issue. What setting in MACH3 could affect this situation.
Slow everything down and see what happens?
Are there any internal feedback options that would get in the way. Monitor on velocity?
Any troubleshooting suggestions.