E3D HEMERA ISSUES,

Discussion in 'Troubleshooting' started by Jorge Ramirez, Mar 29, 2020.

Tags:
  1. Jorge Ramirez

    Jorge Ramirez New Member

    Joined:
    Mar 17, 2020
    Messages:
    1
    Likes Received:
    0
    Hello everyone,

    I am hoping i can find some answes to my issue. I have an e3d hemera that i installed on my anycubic chiron. It has been printing fine for a little over a month now. I left the printer to print over night like usual and i came back to the extruder motor not moving. I dissasembled the extruder thinking that there was a jam but everything seemed ok, so i just plugged the motor back in and i get a small jitter and then nothing. i can spin the motor just fine with my fingers but the stepper cannot seem to get it to go. I switched to another TMC2208 and a A4988 with no difference. I already plugged it in to my other printer and still nothing spins. Not sure what could have happend.

    any ideas?
     
  2. Haytham Bennani

    Joined:
    Oct 5, 2019
    Messages:
    15
    Likes Received:
    4
    Just for sanity's sake: try checking the current being supplied (about 1000A is a starting point for the Hemera stepper, 1100mA would be nicer, motor is rated for 1330mA).

    Also try checking if the idler arm is too tight.

    I also find that if your heatsink cooling fan isn't keeping temps down (around 35-40C) then it also tends to seize up the internal shafts/bearings/gears since they are such tight tolerance parts. Thermal expansion and so on..
     
  3. Marcus Mendenhall

    Marcus Mendenhall Active Member

    Joined:
    Mar 24, 2020
    Messages:
    31
    Likes Received:
    5
    Check the coils with an ohmmeter, if you have one. If both wire pairs look about the same, and have a few ohms resistance, and the motor can be turned by hand (which you indicate), it is 99% likely not a motor problem. Bad cable?
     

Share This Page