Hi Jeremy. If your VFD has the Modbus Port on board (rs232 or rs485?) I suggest to you to try the *mb2hal* component (the description and the "how to" are on the Wiki). I've tested the Modbus protocol using the TCP/IP (ethernet) and seems to work just fine so the serial communication should be fine too. Can you detail the Brand and the product code of your VFD ?
Alex On Sun, Dec 7, 2014 at 3:35 PM, <p...@wpnet.us> wrote: > > The VFD I'm using uses three wire control - FWD, REV, RUN/STOP, where the > MESA card is designed around FWD/REV and RUN/STOP two wire control, however > the VFD can set inputs for active high or low operation so you can set FWD > for active high, REV for active low and tie the two together to a single > FWD/REV control signal. It's not entirely clear in the manual so it took a > little bit to sort out but it works well. On the MESA card the enable > output for the spindle is also the enable for the analog speed output so > you can't use it as anything but an enable. > > > ------Original Mail------ > From: "Jeremy Jones" <sp01jjo...@gmail.com> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Sent: Sun, 7 Dec 2014 09:16:53 -0500 > Subject: Re: [Emc-users] 7i76 spindle output > > loadrt scale count=1 > addf scale.0 servo-thread > setp scale.0.gain 0.002 > net spindle-speed-scale motion.spindle-speed-out => scale.0.in > net spindle-speed-DAC scale.0.out => <your DAC pin name> > > > That's whats in the integrator manual. I started out with the abs I copied > from a similar machine but then tried this and it worked.. I will finish > the abs and report back. Should I look into adding my info, once complete, > to wiki for others to use? My combination of setup and VFD are pretty > common. > > > > Alex - I think it might. I currently have it hooked up CW on one pin and > CCW on another. Let me see if I can switch that to a single pin. I am using > the 0-10v pot on the VFD but it uses separate pins for the > direction...which confuses me why it works one way perfectly and the other > way is way off. Like you said I guess it's the negative. > > Once I get this figured out I want to tackle the MODBUS setup for mine too. > Just figured this would be easier for now. > > On Sun, Dec 7, 2014 at 5:22 AM, alex chiosso <achio...@gmail.com> wrote: > > > Hi Jeremy. > > Does your VFD have a CW-CCW physical input to reverse the motor rotation > ? > > If yes you should wire it and activate it related to the sign of > > motion.spindle-speed-out . > > Or if your VFD has a differential (+/-10Vdc) input you should use the > > motion.spindle-speed-out (scaled as needed) to activate the analog speed > > reference . > > > > Alex > > > > On Sun, Dec 7, 2014 at 11:02 AM, andy pugh <bodge...@gmail.com> wrote: > > > > > On 7 December 2014 at 02:51, Jeremy Jones <sp01jjo...@gmail.com> > wrote: > > > > I had ABS going and then I switched it over to scale like in the > > > integrator > > > > manual. I can try and switch it back. > > > > > > I admit that I have never read the integrator manual, so I don't know > > > what it says. However I suspect that it hasn't caught up with the fact > > > that there are now direct ABS outputs for spindle speed from motion: > > > http://www.linuxcnc.org/docs/html/man/man9/motion.9.html > > > > > > -- > > > atp > > > If you can't fix it, you don't own it. > > > http://www.ifixit.com/Manifesto > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > > > from Actuate! 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