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General Mach Discussion / Re: Spindle Control Takes 70% of processing power??? (Cant run spindle and G-Cod
« on: May 06, 2010, 02:35:49 PM »
Hood,
Its a 2.4 ghz Celeron, 1 Gig Ram, Ati Radon 9250.
Does it load down a computer that much to run a standard step/direction spindle? Closed loop is just nice, to get the exact spindle speed. With the VFD based drive, its not very linear steps/sec to Rpm. So closed loop makes it accurate.
Closed loop on/off seems to have a minimal effect.
Thank you.
XRay-Man,
I am not sure I understand your test.I have tried this.
I placed a switch that changes the VFD Spindle Controller, back to the original pot control. If I switch it to manual control and run the same gcode it runs fine. Spindle On Ground are common, but the diver board is opto isolated from the computer.
My understanding most noise like this would come through the ground/ or lack there of. By leaving the grounds common and having the spindle on (making noise) but manual control. It runs the gcode fine.
I think this means its not noise? Or am I not getting this right?
Thank you both for your time,
I hope I answered what you were asking.
TJ
Its a 2.4 ghz Celeron, 1 Gig Ram, Ati Radon 9250.
Does it load down a computer that much to run a standard step/direction spindle? Closed loop is just nice, to get the exact spindle speed. With the VFD based drive, its not very linear steps/sec to Rpm. So closed loop makes it accurate.
Closed loop on/off seems to have a minimal effect.
Thank you.
XRay-Man,
I am not sure I understand your test.I have tried this.
I placed a switch that changes the VFD Spindle Controller, back to the original pot control. If I switch it to manual control and run the same gcode it runs fine. Spindle On Ground are common, but the diver board is opto isolated from the computer.
My understanding most noise like this would come through the ground/ or lack there of. By leaving the grounds common and having the spindle on (making noise) but manual control. It runs the gcode fine.
I think this means its not noise? Or am I not getting this right?
Thank you both for your time,
I hope I answered what you were asking.
TJ