---------- Forwarded message ---------- From: gene heskett <ghesk...@wdtv.com> Date: Sat, Jun 9, 2012 at 3:26 PM Subject: Re: [Emc-users] Parting out a huge "CNC turret punch" To: emc-users@lists.sourceforge.net
On Saturday, June 09, 2012 04:19:37 PM Jon Elson did opine: > Dave wrote: > > If the CNC control is GE, then the drives and likely GE also. > > > > I know a guy who might have some parts and manuals for that control if > > you decide to get it going. > > URRRrrp! No, unless it is totally functional after the move, it would > most likely be > a complete waste of time to try to resurrect such an ancient control. > If GE, that > means PRE-Fanuc, so we are talking DTL ICs, maybe, from the mid -60s, > and about 250 separate PC boards and 1000+ chips. Also, quite possibly, > PRE CNC, meaning no computer, and therefore, no diagnostics. If a chip > was bad, it would do crazy motions when you gave certain commands, and > you had to infer the bad chip from the numbers involved. YUCK! I just > had some experiences trying to get some GE Hi-Ak drive running, and > after several puffs > of smoke, the guy gave up and got some Copley amps on eBay. he had 3 or > 4 complete controls there, but they just kept burning up. I guess when > this old > gear sits for too many years, it gets very hard to bring them back to > life, what with bad capacitors and dirty connectors. > > Jon I don't have fond memories of either DTL or RTL logic Jon. IIRC both suffered from something loosely resembling the purple plague, similar to birds beak syndrome but from a different chemical instability, limiting its working lifetime to only 7-10 years. The degradation mechanism functions equally well on the shelf as it does in circuit with operating power applied as I recall. I do not have fond memories of old controls, either. Besides everything, they usually really lack good UI. ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
