Yes and no, the pannel potentiometer is not for changing the spindle speed
The speed is controlled by a digital out put from the DSP it moves up and down in 3000 rpm steps, ie OFF then 6000 then 9000 up to 24000
Your DSP controller may be set up wrong like mine was if you donít have this option
If you press and hold down the on/off key then press Z+ or Z- and let go SWITCH GRADE should be displayed on the screen you should be able to go from 1 to 7 by repeating this.
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