Help, X-Axis only moves in one direction

[Polmer]

Hello,

 I have a issue with my X-axis that is giving me fits.
 When I try to jog the axis to the left and right , it always moves to the right regardless of what Key I press.I cant get it to move to the left.The other axis controls work just fine.

I have done some initial trouble shooting and have confirmed it is not the motor, the cable, and I just recently replaced the Chip for the X-axis driver  thinking this would fix the problem........no such luck.
When I test the Mach 3 driver test, it sometimes says pulsing too fast. Not sure if this is related or not???

I am running Windows XP
Lastest version of Mach 3 ( Purchased the license)


What should I try next?

Tom

[BR549]

Check your config of the pins and ports. Make sure the direction side is correct. THEN make sure the wiring matches the config.

[audioandy]

Might also be worth looking at the direction pulse in motor tuning (make it a higher number)

[M250cnc]

Tom What happens when you move the axis in MDI mode, does it move correctly.

Then you may have the wrong button assignment on the jog key.

Phil

[Polmer]

Update:

The x-axis does go through brief moments were it does move in the right direction, but then stutters and doesn't move to the left again. I noticed that  when I first turn the system on ( before I have start up mach 3) that the X axis is humming and randomly twitching. This isnt happening to my other to motors. I then plugged in on of the other motors and it did the same thing. This isnt a motor or cable issue.

I loaded up Mach 3 on another computer at home, added a fresh HML file and the the same thing still happens.

At this point, I am almost certain I have a Driver Card Issue.

Going to send the card back for them to look at.

Thanks all

Tom

[Hood]

Swap the drivers around and see if the problem follows the drive.
Hood

[Polmer]

The x-axis stuttered, so then I plugged the X cable into another motor, then the y-Axis motor started stuttering.
Problem doesn't appear to be related to the motor.

I then swapped Cables, using a previous good cable and a "good" motor into the x-axis of the driver board....Still bad stuttering.
Problem appears regardless of what motor Or cable I use.



Hood, when you say swap the drivers around, do you mean for me to take out the driver chip from my X and put in my Y chip?
Because I also replaced the X Axis chip in the driver board, but this didn't help ether.


I also played with the motor pulse direction values & confirmed that the keyboard is mapped correctly for jogging direction, after all, it sometimes does go in the right direction.

Tom

[Hood]

Ah Ok I was presuming your drivers were seperate for each axis, sounds like you have a combined axis board?
Hood

[Polmer]

Yes,

I only have one card, which I attach all three motor to.
I apologize, I am new to CNCs and Mach 3 and am probably not making it easy for your guys to help me.

Tom

[Hood]

No problem at all, definitely sounds like your drives dodgy.
Does your parallel port cable connect direct to the drive board or does it go to a breakout board then to the drive board. If its the latter then you could possibly swap around the wires for Step/Dir of X to Y and vice versa, if the problem stays with the same motor then you know its a drive problem.
Hood