› ›

Sensor Error

LudovicotechniqLudovicotechniq
in Questions & Answers
Hi, I have a problem with nozzle sensor while printing. I am trying to print Eiffel Tower (https://www.thingiverse.com/thing:912478)  but the repetier stops to print and sends m999 sensor error code. It caught my attention that before this error, nozzle temperature rises inevitably. While it supposed to be 205 c degree, it rises up to 240 c degree and software does not stop this. Software detects this situation too late. I think it is a communication error. Can you help me?


Comments

  • LudovicotechniqLudovicotechniq
    edited September 2018
    Hi, I have a problem with nozzle sensor while printing. I am trying to print Eiffel Tower (https://www.thingiverse.com/thing:912478)  but the repetier stops to print and sends m999 sensor error code. It caught my attention that before this error, nozzle temperature rises inevitably. While it supposed to be 205 c degree, it rises up to 240 c degree and software does not stop this. Software detects this situation too late. I think it is a communication error. Can you help me?


    My printer options:

    Baudrate: 15200
    Buffer: 127 Bytes

    https://i.hizliresim.com/8zva67.jpg (this is the problem)

  • RepetierRepetier
    Is the temperature always swinging +/-15°C? That is not how a good calibrated PID controller should react. So based on the curve I see (output power would also have been nice) I would think it is just a especially big jump that manages to trigger the decouple trigger. So I would first find better parameter for PID - use M303 with syntax depending on your printer and see if it only swings +/1°C then in normal prints. In edge cases you will always get more e.g. if fan turns on/off it can have a bigger impact.
  • LudovicotechniqLudovicotechniq
    edited September 2018
    Repetier said:
    Is the temperature always swinging +/-15°C? That is not how a good calibrated PID controller should react. So based on the curve I see (output power would also have been nice) I would think it is just a especially big jump that manages to trigger the decouple trigger. So I would first find better parameter for PID - use M303 with syntax depending on your printer and see if it only swings +/1°C then in normal prints. In edge cases you will always get more e.g. if fan turns on/off it can have a bigger impact.
    What values should I enter into the PID?

    My values is here:

    15:48:36.841 : bias: 41 d: 41 min: 147.75 max: 152.88
    15:48:36.841 : Ku: 10.19 Tu: 39.52
    15:48:36.841 : Classic PID
    15:48:36.841 : Kp: 6.11
    15:48:36.841 : Ki: 0.31
    15:48:36.841 : Kd: 30.19

    Edit: I did enter kd,ki and kd value into the PID and looks like ok tempeture values. Thank you for help. 

Sign In or Register to comment.