stepper motor stall?

[john swift]

from your description I don't see any thing wrong

do you have the stepper driver enable inputs connected ??

if you do
try running with the enable disconnected
(the enable is a negative logic input so the drive is enabled with no input !! )

if Mach 3 is a bit slow enabling the drive that could be a cause of you missing steps


what position do you have switch 4 ?

if its off , the motor current will be reduced when the motor is idle

switched on , the current remains at the 4.2A you set the stepper driver to.
and you should feel more resistance when you try to manually turn the hand wheel



John

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