On 01/21/2016 06:45 PM, lloyd wilson wrote: > I just went to look at a '80s Bridgeport VMC with Heidenhain controller > and Fanuc yellow cap servos (didn't get inside a cabinet for closer > investigation - yet). The beast has a tool changer and a bad controller. > Anyone have experience with that particular configuration? Particularly, > what servo amps were used and what encoder technology - I remember > discussions about Fanuc hardware that suggested that specialized > interface hardware is necessary. What about tool changer technology - I > assume a PLC process in the LCNC environment would be sufficient to get > that running. > > Yellow cap had standard quadrature ABZ differential encoders. Not sure what they'd have for servo drives. Usually, Heidenhain was all Heidenhain, and Fanuc was all Fanuc. But, at that vintage, you may NOT want to reuse any of the electronics. Depending on the vintage, if Fanuc, it could have phase control SCR amps that require really GOOD 3-phase power, no phase converters need apply. Somewhere around '84 they went to transistor amps that basically ran off DC, so they could be adapted to single-phase supply.
Fanuc systems used the CNC control to generate the synthetic tach signal the velocity servo amps needed. I have no idea how that might work on the Heidenhain/Fanuc combo. (SOME Yellow Cap motors still have the DC tach built into them.) A number of VMCs with toolchangers have been successfully set up, nearly all using Classic Ladder. The most recent I know of was the Burgmaster at TxRx labs in Houston. Jon Jon ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
