On Thu, 2010-07-29 at 22:37 -0700, Speaker To-Dirt wrote: ... snip > Anyone out there with this experience. That when you use an axis a > lot you pop a fuse. I'm guessing since I'm using the orig old boards > the transistors might be going into thermal runaway and popping the > fuse. I'll blow a fan on them next time. Any other ideas out there?
One wild guess,your motor supply and/or stepper driver boards may have large filter capacitors. Electrolytic capacitors don't age well, so you may need to replace any old capacitors. These large capacitors smooth out power spikes, so without enough capacitance the power spikes may blow a fuse. I had a thermal problem with a gas dryer where the windings on a gas valve solenoid would short out after the solenoid was on for a while. This was a bugger to find, but I happened to have my meter on the solenoid when it faulted, otherwise when the solenoid cooled down it was fine. So you may want to suspect any parts on your boards that have windings, although with power circuits, failed parts tend to stay that way. > > But my real question is this. How do I tell EMC2 where to start the > the g-code program. So for my board I use two nested loops. The outer > loop sets the number of rows and the inner loop sets the number of > columns. I have the machine set in X and Y, so I can easily rstart the > program and be indexed, but I sure would hate to have to wait another > ~30 min or so to return to where I was. I'd like to just tell the > g-code parser that I'm in this line and the outer loop has cycled two > times (I've completed 2 full rows) already. Is there a way to do this? It may help to post your g-code. If your loops have a variable that you increment, you may be able to just add or change a line or two to initialize the variables to match the hole that you what to start with, such as, instead of row=0, column=0 change to row=2, column=0 (or #1=2 #2=0). -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://p.sf.net/sfu/dev2dev-palm _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
