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YL620 VFD: how to display spindle RPM?

Discussion in 'CNC Mills/Routers' started by Collet, Jul 30, 2020.

  1. Collet

    Collet New

    Jul 27, 2020
    Likes Received:
    Waiting to receive my CNC I am playing with my 2.2kw spindle and YL620 VFD
    It works, controled by the front panel knob for the moment, but I can not find how to display the spindle speed in rpm...
    Did not find in the user manual.
    The lighted LED is RUN and never RPM and it shows the target frequency (x10...!...)
    Do someone knows how to display spindle speed in RPM?
    Other question: what is the use of the 4 red switches on the attached picture and how to position them?

    The user manual is quite tricky even foggy...!... and the seller does not help ...

    Thank you

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