Here is the latest on by Shizuoka mill problem. I haven't spent a lot of time on this, but I did replace the hard drive with a new install of EMC2 2.3.1 and Ubuntu 8.04.
At the beginning of the mill conversion when I installed the VFD, I had a problem with noise on the analog input, which I made usable at the time. I looked into this a little more. I shut down different parts of the system to see if the noise went away. There was no effect, so the noise must be from the VFD, which has an input mains filter and shielded motor output lines, or the DAC may have a problem. I need to figure out how to better study the VFD signal. Hoping that the PC work might have helped, I ran the encoder wheel program four more times with an empty tool holder, which ran the part normally, but the backplot had an anomaly. The program calls for the center hole first, then the slots and finally the outer detents. On the last two runs, at some point (which I didn't see) the red center hole paths disappeared, leaving the white lines. Since the actual tool paths seemed to complete properly, I put the tool holder with an end mill in and ran the program. The machine stopped again at the same spot at the nineteenth hole. I got a screen capture of the EMC2 status at the point the motion stopped: http://wallacecompany.com/machine_shop/Shizuoka/Screenshot.png http://wallacecompany.com/machine_shop/Shizuoka/Screenshot-1.png http://wallacecompany.com/machine_shop/Shizuoka/Screenshot-2.png I am not familiar enough with the status screen to know what is significant, so if something jumps out, please let me know. The symptoms don't seem to indicate what the problem might be. The only difference between a successful run and not, is whether a tool touches the workpiece. The plan now is to move the VFD to a steel enclosure. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
