Thanks for all the replies. I don't think I made my concerns clear. I was planning to use Modbus only as the control to start/stop/set speed and was concerned if something caused EMC to stop, the last Modbus command would be left running.
I missed the start fwd/start rev inputs in the manual. It sounds like that would work, using a Hal AND gate combining Enable + Run signal. Thanks, Frank > -----Original Message----- > From: Michael Haberler [mailto:[email protected]] > Sent: Thursday, 22 September 2011 3:25 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] OT: Wiring a VFD > > I have a machine which was delivered with a Toshiba VFD and 0-10V speed > control plus lots of other pins for this and that > > I switched it to modbus, adapted the gs2 driver to this > http://git.mah.priv.at/gitweb/vfs11-vfd.git > and get much better control over the thing as before > > so far that's proven a reliable solution > > -m > > Am 20.09.2011 um 23:29 schrieb Frank Tkalcevic: > > > I have a Hitachi SJ200 VFD that I will be hooking up to EMC. I'm just > > wondering what the best combination of signals I should use to > > control, and monitor it. > > > > What it seems to lack, compared to my servo amplifiers, is an Enable > > line, something that stops it from doing anything unless the Enable is > asserted. > > It has Trip input, but that can only be deactivated by using a reset input. > > I plan to use the RS485 connection to control the speed. It has a > > alarm output that I can use to detect a fault. > > > > Has anyone set up one of these, and how did they do it? Or am I being > > over-cautious? > > > > > > ---------------------------------------------------------------------- > > -------- All the data continuously generated in your IT infrastructure > > contains a definitive record of customers, application performance, > > security threats, fraudulent activity and more. Splunk takes this data > > and makes sense of it. Business sense. IT sense. Common sense. > > http://p.sf.net/sfu/splunk-d2dcopy1 > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ---------------------------------------------------------------------------- -- > All the data continuously generated in your IT infrastructure contains a > definitive record of customers, application performance, security threats, > fraudulent activity and more. Splunk takes this data and makes sense of it. > Business sense. IT sense. Common sense. > http://p.sf.net/sfu/splunk-d2dcopy1 > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
