It might help to draw a diagram showing the electronics (drives modules etc) and where they are grounded showing outlines of the cases.
This is to get an idea where any common mode interference signals can come from. Also pictures of the wiring with annotation of wire bundles to get an idea of any capacitive or inductive coupling. Dave Caroline On 20/12/2015, John Thornton <j...@gnipsel.com> 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
