Taig stepper motor problems

[pbmwco]

Hello everyone, I been having problems with my Nema 23 steppers. They have lost their torque. All four at once. I have been working with tech support but they have not been able to figure out the problem. I am using Mach3 as the control. So far this is what I have done:I increased the velocityI increased the stepsI checked the voltage of the capacitors in the control box and double checked the fusesI checked the CPU usage I bought a new/used computer with windows xp 32 bitOne interesting point, the new/used computer ran with less torque and less power. If you can help please do!thank You

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[jalessi]

pbmwco,

Copy *.xml files from the "C:\mach3" old computer to the new computer

Jeff...

[pbmwco]

Hi Jeff and thank You for your reply. I did. I copied all the necessary files. I also verified that the com cable is good.

[jalessi]

Are you 100 percent positive you are using the xml files that worked correctly with the old computer?

[pbmwco]

Yes, 100%

[jalessi]

What happens when you reattach the old computer, does the stepper performance return to normal?

[pbmwco]

Yes, but still ahs the original problem of low torque.

[jalessi]

What stepper drives are you using?

[pbmwco]

Nema 23

[jalessi]

What stepper drives (electronics) are you using not stepper motors?

Please post images.

[pbmwco]

I am using the controller produced by micro-proto. I have been on tech support with them but it's moving very slowly.

[jalessi]

Are you using backlash comp in Mach3, if so try disabling it.

[pbmwco]

No, backlash is off. I found that if I slow the velocity down to 20 and up the steps to 10 I regain the torque. I'm guessing that the problem must be in the controller. I am hoping I can find the bad component and replace it. Does anyone know what I should be looking for?

[awerby]

What do you mean by "up the steps"? The steps per unit should be set by the mathematical ratio between the motors, screws and drivers). The Taig controller uses half-steps, but that's fixed and can't be changed by the user. So what are you upping?