You need a shop cat! Unfortunately shop cats are not effective deterrents to raccoons and possums.
But I don't have any mice... ;-) Dave On 6/4/2012 9:52 AM, [email protected] wrote: > Hi John, > > Too bad you can't connect your machine to a solid 3-ph line to see if the > same issue happens regardless of the power source. I had a handful of issues > with my '86 VMC like loose PC boards, oxidized connectors, etc. Now that it > gets more use it seems to be doing better. Keeping the caps charged makes it > happy I guess. Last year I fired it up after months of non-use and it worked > fine on a Saturday but the Z-axis encoder went bad the next day. Turns out I > upset a mother mouse with my Saturday machining and she chewed through the > nice Heidenhain shielded encoder cable!! It was a 20 ft extension cable so I > was able to shorten it a bit and get running again. Now there are sticky > traps in the machine's wire trays. The kids drop dog food in the garage and > the mice are quick about stuffing kibbles in my equipment. > > A change in sound may indicate other issues like stressed driver silicon. > This may be electrical or thermal stress from its previous owner. Even a > tangential lightning hit may show up in weird ways. Maybe an IGBT or MOSFET > is on the edge of going and when it draws too much current the 611 trips out. > > > Dennis > > > > >> > >> > On 6/4/2012 6:40 AM, John Thornton wrote: >> >> Yesterday I made some parts and had a giant fan on the drive to see if >> >> it is a cooling problem. After about an hour or so the drive tripped >> >> out. I forgot to mention that the only thing moving during these faults >> >> is the Z axis and it is moving up ie the most loaded direction. Of >> >> course I can make it trip out with S6000 M3 so it does point to the >> >> infeed unit. I checked the internal cooling fan on the drives and they >> >> all are running. After the fault I reset the drive and continued to >> >> finish the last 5 parts without a fault. When it is about to fault out >> >> on a rapid Z up move I can hear a change in the tone of the Z servo and >> >> it starts to grunt for lack of a better word to describe the sound. >> >> >> >> The 600vdc buss is well protected as well as all the parts of the drive >> >> system. By the time I could get it open on the bench any hot part would >> >> be cool. >> >> >> >> I'll check the AC ripple today when I make some parts. >> >> >> >> John >> > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
