Emco PC turn 55 upgrade..
I believe part of the problem is with the code I'm running. Another problem is that I need to implement some kind of limit to the spindle acceleration. Look at the attachment at the top of the page. It looks to me like it is telling the machine to move at 800mm/rev, when it should be switching to G94 to tell it to go 800mm/min, and then back to G95 for the actual cutting at .18mm/rev. This is because I was trying to get rid of some errors with the Emco control by selecting "use high feedrate" instead of rapid in fusion. I will try redoing the cam with the rapids turned back on.
Does f-error have anything to do with how the machine follows the toolpath, or is it simply a limit that causes the machine to stop when exceeded?
turbo wrote: Does f-error have anything to do with how the machine follows the toolpath, or is it simply a limit that causes the machine to stop when exceeded?
It is just a limit that triggers an error. And I do rather suspect that the system might need the f-error limit to be > backlash magnitude.
jmelson wrote: No reason to use output from the VFD, the spindle encoder will be the most accurate.
Limiting spindle acceleration should be done by putting a lowpass or limit HAL component between motion.spindle-speed-out and whatever sends the analog voltage to the VFD.
Could you please elaborate on limiting the spindle accel?
turbo wrote: I don't think there is any way to access the VFD programming without an add on module or special programming. I'm pretty sure I'm going to have to do it in hal.
OK, in that case look at the limit3 HAL component.