Duet3 expansion - power supply
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hey communitiy,
Do I have to connect the expansion board power via the mainboard or should I connect it directly to the RSU?
maybe a stupid question.....but I´m scared todestroy the electronic.
KR Richard Gruna
tahnks -
Do you mean daisy chaining the power from the main board to the expansion? Connecting directly to the power supply would probably be best. I don't think it has the same shared ground connection that the Duet2 and Duex board has.
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You can connect the expansion board directly to the PSU, or daisy chain the power from one board to another. There is just one combination that I have found not to work well:
- High powered bed heater driven directly from the Duet 3 bed heater output
- Long and not very thick wires between the PSU and the Duet 3 main board
- Expansion board powered directly from the PSU
This combination generates enough differential ground noise to upset the CAN bus signals. So if using the Duet 3 to drive a high-powered heater directly, position the PSU close to the Duet 3 and use short thick power wires between them.
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@Phaedrux
I use Duet3 6hc with the duet3 expansion 3hc...
I´ll try to connect both boards directly to the RSU.@dc42 To avoid this problems I´ll use a SSR to heat the bed. In this case its not direct driven by the Duet3, rigth?
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@barbarossa-cologne said in Duet3 expansion - power supply:
In this case its not direct driven by the Duet3, rigth?
Correct.
