Keith Clark wrote: >Well, the y axis gecko drive burned again this morning. This time >there are no loose wires. I was doing very little with the machine >and had just turned it on when during a y axis G0 move, the drive >burned up. I assume this is an indication that the Gecko cannot >handle the motor I am using. This is an old topic and I have asked >for help with this problem before. The mill is a Bridgeport Series >1 CNC originally controlled by Boss 6 but now using Anaheim Nema 42 >high torque stepper motors and Mach2 software with a Campbell >breakout board. > >At this point is seems reasonable to try another brand drive? > > I think you need to retire that MOTOR. There is nothing wrong with the Gecko drive, when used with good motors. But, one of its weaknesses is that shorts to ground, or just plain internal shorts in the motor windings will pop transistors in the Gecko drive. I think you'll find the Rutex, Xylotex, etc. drives all have this same weakness. After blowing TWO Geckos on the SAME motor, doesn't that tell you something? Why didn't the X or Z drivers blow? Why always the Y axis?
Explanation: Your Y motor has an intermittent short. How much you are doing with it doesn't make much difference. I assume the motors heat up, even when idling. The heat probably causes the short to develop every once in a while, when the winding expands from the heat. Jon Addresses: FAQ: http://www.ktmarketing.com/faq.html FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ Post Messages: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [Moderators] URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO OFF Topic POSTS: General Machining If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble. http://www.metalworking.com/news_servers.html http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list. NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........ bill List Mom List Owner Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
