MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > After Building the Beast - Operating , Troubleshooting and Maintenance > Troubleshooting
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Reply
 
Thread Tools
  #1  
Old Wed 31 December 2014, 14:09
MK_CATANZARO
Just call me: mike #105
 
cincinnati,oh
United States of America
Problem with slaved axis

So I've been cutting with my Mechmate for a few years now and everything has been going great. Then last week without any warning, the slaved x(a) motor has started frequently (bot not always) going in the wrong direction. This causes the gantry to twist and jump off the rails. There are no error lights on the gecko 203v. The pmdx 122 is showing the correct lights on the direction output. My motor is the pk296a2asg7.2. Has anyone seen this before? Any suggestions before I start replacing parts?

All of my wires are still tightly connected. Nothing has been changed. One day, I turned it off and the next time I turned it on, this happened.

I have pulled the gantry to get a good look and listen to the motors. The problem motor is occasionally functioning and sounding good. Sometimes it hums loudly as it binds. Sometimes it makes a gravelly sound as it runs in the wrong direction.

Any advice would be much appreciated.

Thanks,
Mike
Reply With Quote
  #2  
Old Wed 31 December 2014, 14:27
ger21
Just call me: Ger
 
Detroit, MI
United States of America
Jog back and forth, and measure the direction pin voltage at the gecko while jogging in both directions.
Reply With Quote
  #3  
Old Wed 31 December 2014, 17:15
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Yep,
It's happened to me before. I had to reinstall Mach. But, before you do, try this....it sometimes works.

Go into the configuration, then motor tuning where you can adjust the speed curve ( trapezoidal profile). Move the slider for each axis just a bit and save before touching each axis. By just moving, thus resetting the motor configuration, it has restored my x1-x2 axis config at least 3 times it has happened. Something with the memory bits gets outta whack.

Try it....it worked for me.
Reply With Quote
  #4  
Old Thu 01 January 2015, 12:29
MK_CATANZARO
Just call me: mike #105
 
cincinnati,oh
United States of America
Thanks Guys, I'll check booth of those ideas against it and see what happens. I'll let you all know if it starts behaving.
Reply With Quote
  #5  
Old Fri 02 January 2015, 10:58
danilom
Just call me: Danilo #64
 
Novi Sad
Serbia
Check or clean contacts from drives to motor wires, this has been mentioned couple of times I think.
Reply With Quote
Reply

Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Setting the Y-axis square to the X-axis Gerald_D 20. Gantry 10 Fri 12 October 2012 00:44
Setting A-axis terminal as X2-axis in EMC2 KenC CNC motion control software 2 Wed 27 January 2010 05:40
Newbie needs help with figuring out drive configurations (slaved drive for x-axis) ikeike 701. Motor Drives 5 Mon 04 January 2010 21:06
Rotary axis (4th Axis) or Indexer software smreish Graphics & CAD 0 Tue 28 July 2009 06:02
Mach3 flaw for slaved gantry motors Gerald D CNC motion control software 8 Fri 10 July 2009 02:50


All times are GMT -6. The time now is 01:23.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.