3 motors to lift Z
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Hello all,
I'm thinking to drive 3 motors Nema17 to lift Z using 3 screws. How I can wire them? I see onboard (duet Wifi only) I have 2 connector for 2 motors, but how I can connect the third?
Motors are 2.1A each…maybe i need reduce the power?
thanks for asnwering.
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Three options:
1. Connect all 3 motors in series. The maximum Z speed will be reduced, but this may not matter. See https://duet3d.com/wiki/Choosing_stepper_motors#How_to_work_out_the_power_supply_voltage_you_need (there is a link to a spreadsheet at the end).
2. Connect 2 in series (to Za and Zb), and the 3rd one to another driver output such as E1.
3. Use a DueX2 or DueX5 expansion board to get more drivers, and connect all 3 to separate outputs. Normally these will be slaved together, but you have the option of using them to do bed levelling - see https://duet3d.com/wiki/Bed_levelling_using_multiple_independent_Z_motors.
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thanks a lot…
bed levelling option is very nice.....
