On Thursday 29 August 2019 05:41:14 andrew beck wrote: > Hi guys > > I am having trouble with my step and direction pulses running my servo > drives on my cnc mill. > > I did have them all working on the bench 2 weeks ago, but now I must > have changed something when I installed the electrical panel on the > machine and I am thinking that I may have gotten a bit stuck and have > the wires wrong. I checked the pinouts at both ends and it looks good > but I think it must be something simple that I have missed..
Do you have an oscilloscope? Troubleshooting such as this is much easier with a nice faster than the eye display. > I can't even get a simple stepper motor going so the problem is not > with the servo drives. The mesa board used to work and I haven't > shocked it since and both leds look ok.. The board is not isolated at > the moment and is connected with metal stand offs I didn't have any > plastic handy. Not sure if that could cause issues.. It could, you may want to see if some fiber or plastic washers can be found. The metal standoffs aren't generally a problem, but too large a washer can short passing traces so they shouldn't be metallic. Put one on each side of the board. > > Anyway any ideas let me know please. Hopefully it just needs a good > nights sleep and I will find something in the morning. > > Ps one thing I would love to hear about is some good timing values for > servo drives running step and direction. I would love to get from > anyone who has some good values to use. I won't say because whats good for me might be bogus for yours of a different make and revision, and those have 10/1 variations, depending on who made the driver and how fast the opto-isolators used are. Asking the driver maker is the best advice. Or see if your drivers are listed in the wiki at wiki-linuxcnc.org. > > > Regards > > Andrew > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_ >campaign=sig-email&utm_content=webmail> Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_ >campaign=sig-email&utm_content=webmail> > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
