Driver cooling on Duet 2
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Just swapped out the X / Y stepper motors on my 12V (for now) corexy for "LDO-42STH48-2504AC" motors, configured them for 2100mA to stay within the recomended 60-85% current range and the driver max.
But the fun didn't last long, roughly one minute into the first test print i got "Error: Driver 3 error: over temperature shutdown" (Driver 3 being my Y stepper). So it looks like i need some active cooling on the drivers to make this work.
Any reconmended ways of going around adding that? I've seen that adding heatsinks on the drivers are somewhat frowned upon? So a fan blowing accros the drivers is the best way of going about this?
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undefined Exerqtor marked this topic as a question
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@exerqtor I have designed a mounting frame for my Duet2 with 2 fans. One for driver cooling and one for MPU cooling. You can find my version on thingiverse:
Duet2 Mounting plate -
Position the fan to blow air underneath the board (preferably along the top as well), especially along the row of stepper driver chips and between the power input and bed heater terminal blocks.
Important! The higher the motor currents you set, the more important it is to cool the board. Always use a cooling fan if you run a Duet 2 WiFi or Duet 2 Ethernet above 2.0A motor current.
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Didn't see that at all! Lowred the current to 1,7A now so that i can print a fan holder for the board. Thx!
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undefined Exerqtor has marked this topic as solved
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@exerqtor Did my own take on the cooling, wanted to keep it as low profile as possible, never had any issues with MCU temp so i didn't see a need for cooling that. Waiting for the 4020 fan to arrive so i can test it
I'll put it on Thangs when i've tested it if anyone wants it
