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v1.0

Major VersionM

by Robert

  1. AMB Kress or Mafell spindle with digital control PWM to voltage 0-10V converter (see links)
    • AMB Kress or Mafell spindle with digital control

    • PWM to voltage 0-10V converter (see links)

    • Small wiring cables suitable for 24V

  2. 'Disconnect the power supply of the duet controller first!' PWM converter has 4 inputs (2 power + 2 pwm input signals) and 2 outputs (0-10V voltage). Make sure the yellow jumper is on the 24V pins as we are using the duet pwm signal output which is 12/24V.
    • 'Disconnect the power supply of the duet controller first!'

    • PWM converter has 4 inputs (2 power + 2 pwm input signals) and 2 outputs (0-10V voltage). Make sure the yellow jumper is on the 24V pins as we are using the duet pwm signal output which is 12/24V.

    • Power wiring to the PWM converter

    • Connect the “VIN” power pin on the duet board (see image) to port 3 on the pwm converter “power supply + (12-30V)”

    • Connect the “GND” power pin on the duet board to port 4 on the pwm converter “power supply – (GND)”

    • Pwm signal wiring to the pwm converter using HEATER E0 of the duet board

    • Connect “VIN” from heater E0 to port 2 “PWM input + (din+)” on the pwm converter

    • Connect “E0-” from heater E0 to port 1 “PWM input – (DIN-)” on the pwm converter

  3. Other than the power supply cable 110V/220V, the spindle has 3 small cables:
    • Other than the power supply cable 110V/220V, the spindle has 3 small cables:

    • BROWN 10-26V DC (for power supply)

    • GREEN 0-10V DC (for speed control)

    • WHITE 0 V (for ground/GND)

  4. Brown to “VIN” connector of the duet power supply pin
    • Brown to “VIN” connector of the duet power supply pin

    • Green to port 6 “voltage output + (AO)” of the pwm converter

    • White to port 5 “ voltage output – (GND)” of the pwm converter

    • Connect port 5 “ voltage output – (GND)” of the pwm converter to the “GND” pin of the power supply on the duet board

    • THE LAST STEP (port 5 to GND pin duet) IS REALLY IMPORTANT! You create a common ground between the spindle and pwm converter/power supply

  5. Under File Management > System click on 'config-spindle.g'. Then add the following lines
    • Under File Management > System click on 'config-spindle.g'. Then add the following lines

    • M950 R0 C"e0heat" L0:25000 Q100

    • L is the minimum and maximum RPM of your Spindle. Adjust accordingly.

    • Q is the frequency. If your spindle keeps fluctuating at lower rpms, change the frequency to 300. If it still keeps fluctuating, change it to 320 or 350 and so on.

    • M563 P1 S"Spindle" R0

    • Press the software emergency stop in the top right corner to restart the controller.

  6. You can control the spindle manually using G-Code. For example M3 S25000, turns the spindle on clockwise and sets the spindle speed at 25000rpm
    • You can control the spindle manually using G-Code.

    • For example M3 S25000, turns the spindle on clockwise and sets the spindle speed at 25000rpm

    • M5 Stops the Spindle.

    • You can also control it in the 'Spindles' panel.

    • Press 'Turn On' will turn the spindle on clockwise at the RPM set.

    • You can change the preset RPMs under Settings > Machine Specific > Spindle RPM Presets.

    • If you have a multimeter, try to read the output voltage of the pwm converter (port 5 and 6). If it says 10V, you are on the maximum spindle speed.

    • You can also add a digital led voltmeter on port 5 and 6 of the pwm controller (see image 2)

  7. Under File Management > System click on 'pause.g'. Add the command M5  in the header, so the spindle stops when you pause a job while running
    • Under File Management > System click on 'pause.g'.

    • Add the command M5 in the header, so the spindle stops when you pause a job while running

    • Open the resume.g file and add the following lines

    • M3

    • The Spindle RPM is not needed. It will go back to the RPM when the M5 command was sent.

    • G4 S10

    • Dwell for 10 seconds to let the Spindle get up to speed.

  8. Modify the vectric's post processor to autmatically use spindle speed.
    • Modify the vectric's post processor to autmatically use spindle speed.

    • Go to the installation directory of the Vectric software, search for “grbl_mm.pp” and make a copy in the same directory and open the copy

    • Change the POST_NAME to something else, I did “GRBL (mm) (SPEED)

    • In the header, change “M3” to “M3[S]” to add speed to the M3 command

    • After your "M3[S]" line, add a new line "G4S15". This code tells the machine to wait 15 seconds to achieve full spindle speed before starting a job

    • Save your file in the post processor directory, make sure it ends with .pp or Vectric does not recognise it!

    • Next time you open the Vectric software, your new post processor will be added to the PP list

Conclusion

Thanks for following the guide. Any issues, please contact us!

5 other people completed this guide.

Christophe Op de Beeck

Member since: 02/05/2020

146 Reputation

1 Guide authored

19 Comments

Hi . step 8- how do i do this using the carveco software ?

thanks

adam silver - Reply

Chris I have implemented this on a Mafell thanks for you hard work on this. Unfortunately it does not respond to the M3 or M5 Gcodes. The speed setting works fine. I am presuming this is a limitation of the Mafell. Or does anybody else know anything different? Or could it be I set the range as specified in the manual like this : M950 R0 C"e0heat" L4000:25000 Q100

Pete Rawlings - Reply

Sorry that should have does not switch off with M5 . M3 commands with speed works fine.

Pete Rawlings -

For those wanting to connect a Mafell Orginal control cable

Pin 1 : Upv : Brown = power supply (PV Interface)

Pin 2: Us : White = control voltage speed (PV Interface)

Pin 3 : Uo: Black = display remaining runtime in overload mode (PV Interface)

Pin 4: GND: Blue = reference potential for voltages of the PV Interface

Pete Rawlings - Reply

Does this work for the Mafell purchase with the Z1+? including speed and power on and off?

geoff d m - Reply

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