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Thermal Run Away + Mosfet Failure

Posted by KyleB 
Thermal Run Away + Mosfet Failure
February 19, 2019 11:21AM
I am trying to use Thermal Run away Protection and a Mosfet. The problem is that the mosfet sets of the thermal runaway protection because it heats up the hotbed faster. I want to modify the code that predicts the temperature that the hot end and hot bed should be .Where would i find it?
Re: Thermal Run Away + Mosfet Failure
February 19, 2019 06:38PM
In Configuration_adv.h


  #define THERMAL_PROTECTION_PERIOD 40        // Seconds
  #define THERMAL_PROTECTION_HYSTERESIS 4     // Degrees Celsius
  #define WATCH_TEMP_PERIOD 20                // Seconds
  #define WATCH_TEMP_INCREASE 2               // Degrees Celsius

and for the bed

  #define THERMAL_PROTECTION_BED_PERIOD 20    // Seconds
  #define THERMAL_PROTECTION_BED_HYSTERESIS 2 // Degrees Celsius
  #define WATCH_BED_TEMP_PERIOD 60                // Seconds
  #define WATCH_BED_TEMP_INCREASE 2               // Degrees Celsius
Re: Thermal Run Away + Mosfet Failure
February 20, 2019 10:55AM
No i want to change the program that decides what the printer things the temperature should be. That is how far off and how long it can be off before it shuts down. Thanks for the help but any idea where that code is?
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