PID tuning of very large enclosure
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Hello,
I'm building a printer with a very large heated enclosure (>2.5m³). I have some heaters (4000W) that I control with an SSR. The enclosure is configured as a heater in my Duet3 6HC.
The heating is very very slow, it tried setting a heating rate of 0.01°C/s (M307) but the command is getting an error if I set a R parameter that low. How can I tune such a large enclosure, do you have tips ?Thanks
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@e4d have you seen this page? https://docs.duet3d.com/User_manual/Connecting_hardware/Heaters_tuning
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@e4d you may also want to check this thread https://forum.duet3d.com/topic/26733/3-4b7-7-chamber-heater-faults/9
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@e4d PID is great for tight temperature control when you have enough heater power to change the temperature quickly, which you apparently don't have. Bang-bang control should be able to maintain the temperature within a few degrees and that's usually fine for printing plastic.
