Dear All, Thanks for the replies. I was musing to myself today at work re. problem and was wondering if I could remember if problem was there before I hooked up the UPS. I'm not sure so I had decided to take it out of the supply chain and see what happens.
The plan for tonight once the kids have stopped running around is to disconnect the UPS and power directly from the mains socket and to put the UPS on an extension lead powered from the house ground floor ring main (once the wife is having her shower as it avoids questions and disapproving looks) Can anyone advise me please - should the 0V of the CNC power supply be connected to mains earth? As far as I understood this should NOT be the case but I am open the education (remember UK not USA wiring). I have ordered a line filter and this should arrive tomorrow, it's the same type as used by a UK supplier to isolate a VFD high speed spindle. Thanks for all your help so far. Regards Andy -----Original Message----- From: Kent A. Reed [mailto:knbr...@erols.com] Sent: 17 October 2011 17:10 To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] OT EMC on control signal On 10/16/2011 9:51 AM, Andy Ibbotson wrote: > Hi Jan, > Workshop is on a 20A spur, light come off the spur on a 5A spur. CNC system > (controller and PC) are connected to a UPS with surge protection. I'll give > your suggestions a try. > Andy > Andy: You've already told us what happened when you ran with the UPS disconnected from mains. I'm curious to know what happens if you simply eliminate the UPS. I may be grasping at straws but there are many kinds of UPS technology out there and they don't all behave the same way in the various environments in which they are placed. I had a laboratory problem in the '90s that was resolved by swapping out one kind of UPS for another. My problem was different from yours but to quote an old comedian, "one never knows, do one?." Good luck. Regards, Kent ---------------------------------------------------------------------------- -- 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
