TMC Overheat on vcore 400, octopus-11, cooled TMC 2209 and amps 1.1.

I have 1 year old vcore 400. It has cooled mbo with 120 mm fan and cooled xy-motors. I added cpap-cooling about 2 weeks ago and its fine. Printer is in my work room so I added xy-decoupling mod to it yesterday for lowering sound volume. After install printer started to throw tmc-overheat errors. Lowered amps to 1.1 from 1.6 and I still get tmc-overheat error. I have swapped the driver but I still get overheat-error. As far as I understand there is pretty much 3 possibilities: Motor failing, Cable failing or Octopus failing. Any other good suggestions? Cable was just taken off from motor for installation and put back. I am pretty much 100% sure that it is not the cause of this problem. But I will of course swap cable if no other cause is found. Is there a possibility that decoupling mod somehow bends the axel of the motor or send some vibrations to motor? I attached logs from last print.
1 Reply
Lucky7
Lucky7OP8mo ago
I still have not found the root cause of the problem but printer functions fine without decoupling mods. My best guess is that y axis slipped during prints. Couplers don´t have set screw and friction is only thing that keeps axis in place. I have re-done mod multiple times and perhaps I cannot get axis enough tight to prevent slipping. Every time the error happened I heard loud sound just before error message. Normally when drivers overheat they just stop and no sound. I will try to diagnose this more by swapping things around and marking axis positions in couplers.
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