Controlling my heated bed and SSR from DuetWifi
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I had it set to 180 and everything I try keeps it going till it faults. Its like its heating up faster than the sensor reads
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Still fighting with this heater. Either I get it to heat up right and then it cools down to fast when extruding or it heats up way to fast and goes into fault for being too hot. Tried the Auto Calibration again and it went to 303 degrees. Then it failed. Got this message:
Warning: Auto tune of heater 1 failed due to bad curve fit (G=2140.6, tc=141.1, td=5.9)
M301 H1 P.4 I.006 D.25 T0 S0.3
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C
M305 P2 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 2
M143 H2 S28024 volt heater in a flexion hot end. Sensor is working correctly. Just to make sure, I tried a spare.
Any advice would be appreciated.
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I suspect you are using a 12V heater cartridge with 24V power. The gain is far too high.
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I have two that are supposed to be 24v. I will try the other one.
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If you have a multimeter, I suggest you measure the resistance of the heater cartridge. See step 9 at https://e3d-online.dozuki.com/Guide/V6+Assembly/6?lang=en.
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I measured the resistance and sure enough, 4.4 Ohms on one and 2.9 on the other
