On 5/2/2011 12:41 PM, Jon Elson wrote: > Dave wrote: > >> I stumbled upon this document. Might be helpful. I'm surprised that >> you don't go into information overload trying to figure this stuff out. >> >> http://www.mitchell-electronics.com/downloads/Catalog_PriceList/TI5000EXManual.pdf >> >> http://www.mitchell-electronics.com/downloads/Catalog_PriceList/Price%20List%20by%20Part%20Number.pdf >> >> Apparently they make encoder test systems. I sure could have used one >> of these the other day as we found a bad Heidenhain encoder on a new >> motor but only after a lot of swapping of parts and wasting a lot of time. >> I think the encoder was zapped when they miss-wired the 24 volt supply >> into some of the encoder data lines. >> >> These guys must know the ins and outs of the Fanuc encoders. Perhaps >> they would talk to you?? Might be worth a shot if you explain that you >> are not a competitor. >> >> > Hah, I seriously doubt it. They probably went to a LOT of trouble to > figure all this stuff out. > One of these boxes is about $5000! > > Anyway, the document gave almost no info on the encoder communication. > > Jon > > > A lot more than I knew (not saying much ;-) ).
Those Fanuc encoders are not absolute SSI type gray scale or binary encoders, they are incremental with electronics attached. That's why they need the battery backup - to keep the electronics alive. Big difference. I'd call them if I were you. The worse thing that could happen is that they could slam the phone down on you! :-) The best thing is that you get some tech who tells all and sends you supporting docs. :-) $5000... yes but what do those Fanuc motors cost if you were to buy a replacement from Fanuc?? The two axes Allen Bradley servo card I was working with last week has two SSI encoder inputs, and two +/- Analog outputs for the servo drives. The card is about 5 inches square, a single board and it has a plastic bezel on the front about 1 1/2" wide. It costs $2500 (after a hefty discount) and requires a PLC CPU, a PLC Rack, and a PLC power supply. There were 4 similar cards in the PLC rack I was working on. When I called AB tech support they wouldn't talk to me unless I supplied a TechConnect support contract number that the customer also had to pay for. (Apparently AB needs the money.. the poor souls) You should figure these things out and then sell a Fanuc encoder debugger for $2500 - half the going price! Dave ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
