I have an old TB Woods WFC2007 inverter for my old Perske VS 60.11-2 spindle.

The Inverter has a parameter for Volts/Hertz Characteristic Selector which includes Linear options, Quadratic Options, and Vector control.
It also has Volts/Hertz Knee Frequency settings (0-400Hz).

My question is, does Vector Control need a knee?

If this is all non-sense, please let me know, I am not a controls engineer, but I'm trying to fix my CNC.

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