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No fan on Ultimaker Original + Electronics?

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Posted · No fan on Ultimaker Original + Electronics?

I noticed that there is no cooling solution for the Ultimaker Original+ Electronics, is it not required at all for the stepper drivers? I noticed that the plywood panel in the bottom of the Ultimaker getting quite warm during a print which doesn't happen on my Rev 4 Ultimaker Original (probably due to the cooling).

Is there any benefit to adding cooling?

 

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Posted · No fan on Ultimaker Original + Electronics?

The UMO+ uses the electronics from the UM2 which should not need additional cooling unless you're in an unusually hot location.

 

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Posted · No fan on Ultimaker Original + Electronics?

Note that temperatures around 60°C are normal operating temperatures for many electronic components.

I mean the component's body temperature when it operates, not the ambient temperature.

 

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Posted · No fan on Ultimaker Original + Electronics?

The cooling of the UMO is only needed because of the stepper drivers. They got too hot, which caused missing steps. The stepper drivers of the UM2 electronics don't get as hot (don't ask me why), so they remain well within their operating specs without cooling.

 

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Posted · No fan on Ultimaker Original + Electronics?

The UM2 electronics have the stepper drivers directly on the mainboard. That means the drivers can dissipate heat directly into the large GND plane of the mainboard, instead of just having the tiny area of Pololu drivers.

These drivers aren't meant to need forced air cooling, they just need a large enough GND plane to dissipate their heat ;)

 

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Posted · No fan on Ultimaker Original + Electronics?

I believe aviphysics is asking if the drivers are socketed like a Pololu A4988 Stepper Motor Driver carrier.

My understand is that the UMO+ comes with the UM2 electronics and that the UM2 electronics have the drivers surface mounted with the rest of the components. As such, it would be hard to upgrade/change/replace the drivers on a UM2 or UMO+. The upside is that the current control is done electronically.

 

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