Driver 0 warning: over temperature warning"
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Hello,
although temperatures etc. look quite good when printing, I get the message: "Warning: Driver 0 warning: over temperature warning"
what could be the cause and what can i do about it?
; generated by RepRapFirmware Configuration Tool v3.3.16 on Sun May 28 2023 15:23:44 GMT+0200 (Mitteleuropäische Sommerzeit); General preferences
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; Bed
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;M42 P3 C"e0-stop" S1
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; Custom settings are not defined
M501 -
@axiom That usually means the driver is detecting it's over 100 degrees. Look at adding some cooling to blow across the underside of the board
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@jay_s_uk Thanks, but if you look at the screenshot you can see that the MCU temperature is at 33.1 degrees...is there any other source?
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@axiom The MCU is different to the driver.
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@axiom Driver chips don't report their internal temperatures - just a digital high if it's too high. What I did on one of my machines was to fix a bead thermistor to some of the drivers with a small dab of epoxy and use these to control fans blowing cold air onto the back of the board.
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@axiom said in Driver 0 warning: over temperature warning":
M584 X0 Y1 Z2 E3 ; set drive mapping
...
M906 X2500 Y2100 Z1800 E1600 I30 ; set motor currents (mA) and motor idle factor in per centYou are running driver 0 at 2.5A which is the maximum supported on your Duet 2. When running drivers at or near maximum current, fan cooling is required. Preferably, use a fan at the edge of the board, next to the VIN connector, to blow air across both sides of the board along the line of stepper drivers. See https://docs.duet3d.com/Duet3D_hardware/Duet_2_family/Duet_2_WiFi_Ethernet_Hardware_Overview#cooling.
