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Hello.In the MAX_RPM = 2900 (in the ini - the motor speed, but there are some ratio)
2) The Spindle Close-LoopThere is a simple 3 ph AC motor and inverter. They are connected and turning the Spindle CW/CCW.The Lathe has 3 speeds. On the first speed when I command to turn 200 rpm (almost 1:1 ratio), it's turning with 275 ±2rpm.The scaling not correct yet. I will do it soon.Is it possible to use the Close-Loop to use all speeds automatically, without using any other hal component.(the lathe config will upload on monday.) Here are the conf files.
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Tomorrow I will try to change the scale from 2900 to 2000 to see some difference. (if it will be)The voltages look scaled correctly (200/2900 *10.67 = 0.735862069V so 0.75V is very close)
but its likely the VFD is not terribly linear at low speeds. MAX_RPM will change the PWM scaling
but if you need it to be more linear you may need to use some compensation like the lincurve
component (or run closed loop)
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[/quote]Can you help me out with the closed loop?
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