gene heskett wrote: >> >> With only the encoders plugged into the PPMC boards the D-sub >> connector does not show ground. >> OK let make sure I am saying this right with only the encoder >> plugged in and my meter set to ohms, one lead on the D-sub >> connector and on on the chassis it shows an open circuit. If I plug >> in the amp to the DAC or the parallel cable my meter shows a dead short. >> Not that this helps of changes anything I just want to make sure I >> am explaining it rigth >> > > I would go to the far end of this cable and opern up the dsub shell and > break the connection there. It is making a ground loop. > > again I am not clear what we are talking about. But, I think Bruce means that when the DAC is plugged into the servo amps, there is a ground connection. This isn't at the encoder but at the servo amp. There MUST be a ground to the servo amp COM terminal, it is the reference for the velocity command!
Jon ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
