if you can get a scope (2 trace) and _SEE_ the noise from your machine ground to a good ground, then you can see when you make a difference.
a good ground can be tested with a megger ( hard to find) a good ground can be a copper rod driven 10 ft into good earth so find the best you can and look to see if theres a difference. a scope is a very visual thing, forget the scales for now, the picture is more important. my 2c ( hmm 2b here ) tomp tjtr33 On 12/20/2015 07:20 AM, John Thornton wrote: > I have a BP knee mill with an Anilam 1100M CNC kit on it. I've removed > all the Anilam controls a while back. I've retained the drives and power > supply and added a GS2 VFD for the spindle. I have a 5i25 7i77 setup. > From the get go I've had problems with the electronics on this machine. > The VFD is controlled by modbus via the gs2 component. The VFD gets > reset to default parameters all the time from noise on the modbus. the > 5i25 get sserial errors. The sserial errors are so bad now it won't even > move an axis. The spindle works ok. The power supply is a simple bridge > rectifier with a huge blue cap and a large power resistor across the cap. > > Peter keeps telling me it's a grounding issue so where do I start > looking and what do I need to do? > > Thanks > JT > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
