7i76 Spindle VFD 0-10V question

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12 Jul 2017 13:35 #95730 by andypugh
andypugh replied the topic: 7i76 Spindle VFD 0-10V question
Don't mess with the encoder, that should be right.

You could tweak the VFD scaling, but you will probably find that it can only be exactly right at one speed. The only way to get better than that is probably to set it up under closed-loop control. And, to be honest, it probably isn't critical to have exact speed to 0.1%.
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12 Jul 2017 14:15 #95732 by timmert
timmert replied the topic: 7i76 Spindle VFD 0-10V question
Really appreciate your help Andy. I just made my first part haha
Encoder is working fine. Constact surface speed is working
Stupid question maybe but will the speed difference be a problem for threading?
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12 Jul 2017 15:24 #95736 by andypugh
andypugh replied the topic: 7i76 Spindle VFD 0-10V question
No, threading (and other spindle-synchronised moves) slave the Z axis to the spindle position. You can even stop the spindle and they stay in synch, as this video demonstrates
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