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General Mach Discussion / Slaved stepper not moving the same amount???
« on: July 23, 2014, 02:26:52 PM »
Hello Everyone,
It has been quite some time since I used everyone's kind help,
but I am in need of that now.
I moved and when I re-setup my CNC router and hooked everything
back up using a different computer...as the old one died, there is a
problem.
I copied all of the parameters before taking the router apart and used
those same parameters with the Dell GX-620 computer.
I have the Y axis slaved to the A axis as there are 2 steppers that drive
the gantry from opposite sides.
The motor tuning is exactly the same, but when I engage the stepper
gears into the rack and move it...one stepper is moving more than
the other.
I disengaged the steppers from the rack and put a piece of tape pointing
down on both gears. Then I command the stepper to move 5 revolutions on
the right side stepper...it does that, but the stepper on the left side is out
of phase about 90 degrees from down.
I have checked that all the wiring is tight.
We are using Gecko G202's and nothing hardware wise other than the
computer has changes.
Before the move, we had likely several thousand hours of nicely maching
aluminum parts very accurately...
Any ideas where I should look next, as I am totally confused.
Very Best Regards,
Preston
It has been quite some time since I used everyone's kind help,
but I am in need of that now.
I moved and when I re-setup my CNC router and hooked everything
back up using a different computer...as the old one died, there is a
problem.
I copied all of the parameters before taking the router apart and used
those same parameters with the Dell GX-620 computer.
I have the Y axis slaved to the A axis as there are 2 steppers that drive
the gantry from opposite sides.
The motor tuning is exactly the same, but when I engage the stepper
gears into the rack and move it...one stepper is moving more than
the other.
I disengaged the steppers from the rack and put a piece of tape pointing
down on both gears. Then I command the stepper to move 5 revolutions on
the right side stepper...it does that, but the stepper on the left side is out
of phase about 90 degrees from down.
I have checked that all the wiring is tight.
We are using Gecko G202's and nothing hardware wise other than the
computer has changes.
Before the move, we had likely several thousand hours of nicely maching
aluminum parts very accurately...
Any ideas where I should look next, as I am totally confused.
Very Best Regards,
Preston