Latest revision as of 16:48, 19 May 2019

Time and temperature rise settings are found in Configuration_adv.h - if a rise of a certain temperature is not observed in Marlin - printer shuts down: [1]
But what about the opposite - if the temperature rises too fast?
basics in configuration.h - [2]. Set duty cycle.

Fast Heater Design

This forum post indicates that SSRs are fine in bang-bang or PWM switching. Switching frequency should be under 10Hz. [3]
Switching time of AC SSR is 8 ms, so Max switching frequency would be 120 hz for AC relay. [4]
Default bed and extruder heater frequency is 7 Hz [5]

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 *Time and temperature rise settings are found in Configuration_adv.h - if a rise of a certain temperature is not observed in Marlin - printer shuts down: [https://github.com/MarlinFirmware/Marlin/issues/7724]
 *But what about the opposite - if the temperature rises too fast?
+*basics in configuration.h - [https://reprap.org/wiki/Heatbeds_-_A_beginner%27s_guide]. Set duty cycle.
+=Fast Heater Design=
+*This forum post indicates that SSRs are fine in bang-bang or PWM switching. Switching frequency should be under 10Hz. [https://reprap.org/forum/read.php?4,570755]
+*Switching time of AC SSR is 8 ms, so Max switching frequency would be 120 hz for AC relay. [https://www.element14.com/community/thread/13647/l/have-a-question-about-solid-state-relays-and-their-applications-ask-me?displayFullThread=true]
+*Default bed and extruder heater frequency is 7 Hz [https://reprap.org/forum/read.php?415,850175]
+=Links=
+*Marlin source for configuration_adv.h - [http://marlinfw.org/docs/configuration/configuration.html#temperature-options]