On Thu, Jun 28, 2012 at 1:30 PM, Viesturs Lācis <viesturs.la...@gmail.com>wrote:
> 2012/6/28 Yishin Li <y...@araisrobo.com>: > > Then we realized that we need an isolated > > pulse/encoder interface for such machine. > > Thanks! Could You, please, explain a little more, what does it exactly do? We were using Mesa's 7i34 as the pulse/encoder interface to servo drivers. It was okay in one workshop with Hypertherm 45A plasma cutter. But, it failed in another factory with 300A plasma cutter and large EMI noise around that field. Our USB/FPGA link was full of CRC error messages, and we couldn't understand why. We had all digital and analog I/O isolated. Finally, we found the noise was coming from the pulse/encoder interface. We then developed AR02 in replace of 7i34, and it solves the EMI noise problem in that factory. You may refer to http://en.araisrobo.com/linuxcnc for the functional block of our control system. Yishin ------------------------------------------------------------------------------ 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
