#X & Y Stepper drivers overheating while IDLE (so not yet homed)

18 messages · Page 1 of 1 (latest)

tawny fjord
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I am running a V-Core 3 with RATOS2.0 on M8P with CM4 and 2209 (and EBB36) with latest Klipper and updated system. While yesterday the printer was functional, I powered down and this morning I restarted the printer. Now I noticed a clicking sound which I now believe was the steppers resetting due to overheating. I narrowed it down to the X & Y motor overheating.
Stuff I have seen but can not explain:
-I checked that cables and the appear ok.
-If I disconnect both cables (Left and Right) from the steppers and reboot, the stepper of the left motor immediately overheats (I have a thermistor on the heatsink) and it goes to 80degr C so I switch off the printer.
-I take out the Left motor stepper (as I thought it might be defect). Right Stepper still in the board. When I connect the Right Motor to the Right stepper, The Motor actually Locks (no movement). When disconnecting the motor hire, the full gantry moves as normal.
-I have switched this Right motor stepper to the Left motor bay in the M8P (no motor wires connected) and it too overheats,...

I am a bit puzzled how to continue error finding...

Also, I have a Fan blowing over the M8P as I normally run the Performance settings, with steppers reaching temps in the range of high 30degr C. Above problem remains when I switch to the "Uncooled" setup.
Printer.cfg attached...

Any Pointers in the right direction are appreciated.

📎 printer.cfg image.png
stray basin
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this sounds a lot more like a hardware issue than a software issue, i'd go ask in #bigtreetech-🇨🇳 as well

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@tawny fjord Can you post your klippy.log too?

tawny fjord
tawny fjord
tawny fjord
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X & Y Stepper drivers overheating while IDLE (so not yet homed)

stray basin
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@tawny fjord your log seems to be full of:

TMC stepper_x failed to init: Unable to read tmc uart 'stepper_x' register IFCNT
TMC stepper_y failed to init: Unable to read tmc uart 'stepper_y' register IFCNT

It sounds like something is shorting your x and/or y drivers.

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I'll let the experts chime in, i'm not sure where to go from here short of switching to other slots and perhaps new drivers.

tawny fjord
tawny fjord
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Hardware issue. Both stepper drivers (left and right gantry) fried,.... how,... ? No idea,...

stray basin
tawny fjord
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TLA = Three Letter Abbreviation

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Problem not solved BTW. Right motor freezes up on boot-up. suspect damaged motor as I replace the Manta with a spare unit,....
Should / Can I move this thread to the appropriate subthread? #bigtreetech-🇨🇳 or #general-electronics or #z_archive_fix-my-printer ?

stray basin
stray basin
tawny fjord
stray basin