[Harmeet]

Hi,
I want to connect a delta inverter drive with Fanuc 0i-MD control....
I have already connected the drive and it is working for Forward, Reverse and Stop commands(MO3, M04 and M05) which is given to the drive as a output address Y0.0, Y0.1, Y0.2. Now i am not able to control the speed through the NC control. How to interface the drive with the control for speed control.
Please help....

[Harmeet]

Nobody here knows the solution for this....????

[barchdesigns]

I know this is an old thread but the more documentation the better. The usual way Fanuc sends a speed command is either by a 0-10VDC signal where 0V=0RPM and 10V=Max RPM, or by a 12 bit address where 000000000000=0 RPM and 111111111111=max RPM. Most VFD's that I have worked with have had the 0-10VDC input and in fact the Delta VFD-E that I just put in has it. Hopefully that is what the Fanuc 0i-MD does. if not (as in the case of my Fanuc 6M control) you will need to do some sort of translation. We used an Arduino to read the 12 bit speed command from Fanuc and then output a 0-10VDC signal using an external DAC.