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    Smart-effector and PT100

    Smart effector for delta printers
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    • bulka
      bulka last edited by

      HI,

      I have a smart-effector and I'm trying to use a PT100 with a daughter board.

      I connected the PT100 to the smart-effector ( label TEMP 2-pin black Microfit 3) and connected on smart-effector ( second and third pin) to the daughter board ( RTD1 - pin 2 and 3 ).

      is that correct?
      I checked many times and for me is ok but I have this error :

      Error: Temperature reading fault on heater 1: sensor hardware error

      0_1524240391609_heater.JPG

      this is the firmware:
      RepRapFirmware for Duet 2 WiFi/Ethernet Version 1.21 dated 2018-03-21

      I tried to change PT100 ( i had 2 ) and the result was the same.

      Can anyone hel me pls?

      Giulio

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      • dc42
        dc42 administrators last edited by dc42

        As you are using a 2 wire PT100 connection, have you fitted the 2 jumpers to the daughter board?

        Have you configured it correctly in the M305 P1 command?

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        • bulka
          bulka last edited by

          0_1524244062739_db.jpg

          I left the 2 jumper but never user M305 P1 command.

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          • bulka
            bulka last edited by

            this is the result of command:

            Heater 1 uses PT100 (MAX31865) sensor channel 201, 2/4 wires, reject 50Hz, reference resistor 400 ohms

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            • bulka
              bulka last edited by

              in config.g file I changed the commant do :

              M305 P1 X200

              but same result

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              • bulka
                bulka last edited by

                0_1524248997359_heater2.JPG

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                • dc42
                  dc42 administrators last edited by

                  Was your PT100 board supplied with a 100 ohm resistor? If so, connect it between pins 2 and 3 of the daughter board terminal block in place of the wires to the effector. It should give you a reading of 0C.

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                  • bulka
                    bulka last edited by

                    yes, was supplied.

                    I connected to the same pins used ( 2 and 3 ) and this is the result:

                    0_1524302583838_heater3.JPG

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                    • dc42
                      dc42 administrators last edited by

                      1C is close enough to 0C because the resistor we supply has a tolerance of 1%. So either there is a break in the wiring somewhere, or the PT100 itself is faulty. If you have a multimeter, I suggest you measure the resistance of the PT100 and work towards the Duet from there. At room temperature it should be a little over 100 ohms.

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                      • bulka
                        bulka last edited by

                        I'm very lucky ..... I measured the resistance of PT100...and no value... (I used the same for the resistance supplied that is 100.8 ohms)

                        Great...never used and faulty....I'll ask to e3d a warranty replacements if possible...

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                        • bulka
                          bulka last edited by

                          I measured the other PT100 and the resistance was around 100 ohms.

                          Oh yes ! Works!

                          Now I changed with this one and it works! ...

                          0_1524317464683_heater13.JPG

                          Thx for the support!! Really!!

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