John Some things to look for. 1: Make sure that you field supply is not grounded to the same ground as the VFD. I.E the 24v Filed supply must be floating. 2: All cables must be screened where possible. 3: Screen must only be connected at the source and and to one single place to the physical earth of the box as well as the mains earth. 4: Earth must only be connected at one single point (star connection)
I had a similar problem with my lathe and found in the end that my spindle motor cage was not physical earth and caused huge noise. >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
