4z axis 4 independent motors. Bed Levering
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I cant put picture here.
Thank you very much for the hint.
I will do as you say
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I have something like that
Leadscrew adjustments made: 4.442 3.913 0.827 -0.424, points used 4, deviation before 3.011 after 0.000
What this give me?
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A recent forum software update has caused a problem uploading pictures, hopefully it will be back soon!
@raf said in 4z axis 4 independent motors. Bed Levering:
I have something like that
Leadscrew adjustments made: 4.442 3.913 0.827 -0.424, points used 4, deviation before 3.011 after 0.000
What this give me?
Hopefully a flat bed? Run the levelling macro repeatedly to check.
Be aware that if you're using 4 leadscrews, and either there is an error in how you have defined them, or an error in the probing measurement, the leadscrews may fight each other trying to get the bed level. 3 leadscrews is recommended, as 3 points describe a flat plane better than 4.
Ian
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My table consists of 4 plates 800x800 and it seems that they are not perfectly arranged relative to each other. But the hauler itself is heavy and the engines have to lift it up hard. Therefore, they must be 4. already have the voltage raised to 2.4A. And leveling G31 warms the drivers terribly. That's why I wanted to try leveling the table without constantly changing up and down while printing overloads the drivers
i have something like that o z probe
; Z-Probe
M574 Z2 S0 ; Set endstops controlled by probe
M558 P5 H5 F120 T800 I1 ; Set Z probe type to unmodulated and the dive height + speeds
G31 P500 X-5 Y-5 Z0 ; Set Z probe trigger value, offset and trigger height
M557 X1:1200 Y1:1200 S50 ; Define mesh grid -
That's a large table! What is the rated current of the Z stepper motors? Perhaps a Duet 3 would be more suitable.
The Duet WiFi/Ethernet is OK at 2.4A provided you have a good airflow from a fan, along the line of drivers on both sides of the PCB. With 4 Z drivers I presume you also have a DueX5. The DueX5 need similar cooling at high currents, but as it has a larger PCB area per driver, the cooling is better. Therefore, it is best to connect the stepper motors needing the highest currents to the DueX5.
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Current is 2,2A And the controlers have radiators and cooling. BUt when i give 2,4A after 1 hour of working there is a statement that the drivers are to hot.
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Does duet3d fit duex2?
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@raf said in 4z axis 4 independent motors. Bed Levering:
Does duet3d fit duex2?
presumably you mean if the DueX expansion can be used with the Duet 3 board? No, the Duet 3 range has its own expansion boards that are not compatible.
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Is the g32 command remembered by the system?
Because I have the impression that the factorials are falling apart, they don't go up well
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@raf said in 4z axis 4 independent motors. Bed Levering:
Is the g32 command remembered by the system?
only until the next restart unless you save them
see: Saving the calibration results
https://duet3d.dozuki.com/Wiki/Calibrating_a_delta_printer -
@raf said in 4z axis 4 independent motors. Bed Levering:
Current is 2,2A And the controlers have radiators and cooling. BUt when i give 2,4A after 1 hour of working there is a statement that the drivers are to hot.
Have you followed the cooling recommendations at https://duet3d.dozuki.com/Wiki/Mounting_and_cooling_the_board#Section_Cooling ?
Heatsinks on the stepper driver chips might actually make things worse, because they disturb the flow of air along the line of driver chips, and the plastic case of the chips does not conduct heat to the heatsinks very well.
