How do I set the minimum heating speed? (RRF on SPC)
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Im running RRF on my skr 1.3, which is running a 12v system so the bed heats up really slowly and triggers a fault because of that. Is there any way to set the minimum heating speed so that this dosnt happen?
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Unless you've specified a lower duty cycle firmware can't speed up the heating.
But you can alter the time constants for the heater tuning (edit: to allow it to be slow). (mobile, otherwise I'd add some links to the docs)
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Yes that's what I meant, allow it to be slower.
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Check out the C and D parameters
https://duet3d.dozuki.com/Wiki/Gcode#Section_M307_Set_or_report_heating_process_parameters
Edit: from a dc42 post:
The reason that D70 was the highest value you could use in M307 is that the C parameter defaults to 140 on heaters that are default to being extruder heaters, and C must be at least twice D. You can use much higher D values if you provide a high enough C parameter in the same command. -
Have you run PID tuning on the bed?
https://duet3d.dozuki.com/Wiki/Tuning_the_heater_temperature_control
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Yes, I have.
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@BlueSandbox said in How do I set the minimum heating speed? (RRF on SPC):
Yes, I have.
And saved the results with M500 and added M501 to the end of config.g to load them at startup? Sometimes that step gets missed and the tuned values are never applied.
