Z Speed



  • What are the Mxx numbers associated to them?

    So, I figured out that I can change the g files on the browser.
    My Z Steps PMM was like 2600 and change.. WAY off.. not sure how that happened, but whatever.
    I changed it to max the X and Y at 100
    Now my Z motors are ridiculously slow.

    So, with all that, what are some decent numbers that I can run with??

    ; Drives
    M569 P0 S0 ; Physical drive 0 goes Backwards
    M569 P1 S0 ; Physical drive 1 goes Backwards
    M569 P2 S1 ; Physical drive 2 goes forwards
    M569 P3 S1 ; Physical drive 3 goes forwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X100.00 Y100.00 Z100.00 E400.00 ; Set steps per mm
    M566 X900.00 Y900.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
    M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; Set maximum speeds (mm/min)
    M201 X500.00 Y500.00 Z20.00 E250.00 ; Set accelerations (mm/s^2)
    M906 X1100.00 Y1100.00 Z1100.00 E1100.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    Thanks for all the help getting me THIS far. my machine is at least turned on and the motors are running in the right direction. I checked my calibration on the X and Y and they are spot on!! Now I just need my Z to get back to normal so I can move on to calibrating my BL Tocuh and then hook up the hot ends to get this thing running!!



  • M566 X900.00 Y900.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
    M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; Set maximum speeds (mm/min)
    M201 X500.00 Y500.00 Z20.00 E250.00 ; Set accelerations (mm/s^2)
    

    Try

    M556 Z60
    M203 Z600
    M201 Z120
    

    You may also want to boost your E values as well.

    Try

    M556 E1200
    M203 E3600
    M201 E2500
    


  • @hbrownell 100 steps/mm on the Z axis seems rather odd. Are you sure that this is the correct value? Just out of curiosity how is your Z axis built? Lead screw? Belt driven? Something else?

    I ask because the number of steps/mm have an indirect influence on jerk and acceleration and a direct influence on maximum speed. For the latter you could enter your values in the EMF Calculator at https://reprapfirmware.org/ and see what it tells you. Look for the value given as

    Speed at which torque starts to drop (low slip angle)

    to be on the safe side.


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