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Are you sure it's not binding? With the power off, can you turn it by hand?
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Hi, I am requesting help to resolve a problem with my Zenbot. Everything was working really well then the machine crashed. The stepper motor will not move and create a shuttering sound when there is the slightest resistance on any of the axis. I replaced the controller board with a new one, cleaned all the rails, and reset all the belt tensions but the problem still exists. Is there a solution to this problem? It is like the steppers are not producing enough power. There are other problems as well but I am trying to fix one thing at a time. Please help. I posted a private video on you tube to help show the problem. Thank you for any help received, this has really got me puzzled.
http://www.youtube.com/watch?v=uaI2ZJMnfxI]DSCN0762 - YouTube
http://www.youtube.com/watch?v=uaI2ZJMnfxI]DSCN0762 - YouTube
Are you sure it's not binding? With the power off, can you turn it by hand?
Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Hi, yes with the power off it moves freely. With the power on I can stop it with my hand it has no holding torque. Are there gears inside the stepper motors?
Try swapping motors from another axis.
No, there are no gears in a stepper, and crashing, or staling them shouldn't harm them at all. Perhaps it's a wiring issue?
Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Hi, all the stepper motors act the same. I checked the wiring it is all correct. It is acting like the stepper motors are not receiving enough current.
Check the voltage from the power supply. Low voltage can cause the symptoms you describe.Originally Posted by Burnit0017
Bob
"Bad decisions make good stories."
Hi, checked the controller board power supply with a multimeter and no load. It is a 19 volt supply and the output was 19.36 volts dc. I am searching for some test leads and I check again under load. Thanks for the help.
Check if it has yanked a wire when the machine crashed.
A stepper motor with one wire disconnected will behave as you described.
(edit) Sorry I just realised ALL your motors are weak. The fault must be something common to all motors, like the power supply (as people have said).
Check your power supply voltage with the machine turned on and the motors powered up (but not moving).
Also check the AC volts ripple in the output of the power supply.
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