Extruder Stepper suddenly only vibrates

sigxcpu

Maybe that is not the problem but:

M92 X80 Y80 Z640 E2740:2740
M203 X24000 Y24000 Z180 E5000:5000

2740 steps/mm * 5000 mm/min = 13700000 steps/min = 228333 steps/second for the extruder.

Are you sure that's what you want?

dc42

The usual causes of stepper motors just vibrating are:

Bad crimp connection in the stepper motor cable (most common)
Stepper motor wired not paired in the correct phases (but it used to work, so not this reason)
Failed driver on the Duet (but you have already changed it, so not this reason)
Failed motor (least common)

Flo

@sigxcpu said in Extruder Stepper suddenly only vibrates:

Maybe that is not the problem but:

M92 X80 Y80 Z640 E2740:2740
M203 X24000 Y24000 Z180 E5000:5000

2740 steps/mm * 5000 mm/min = 13700000 steps/min = 228333 steps/second for the extruder.

Are you sure that's what you want?

That is max feedrate, I am testing at 5 and 10mm, so I will not even reach that limit.

@dc42 said in Extruder Stepper suddenly only vibrates:

The usual causes of stepper motors just vibrating are:

Bad crimp connection in the stepper motor cable (most common)

I tested with 4 different known good cables, so it seems kind of improbable

Stepper motor wired not paired in the correct phases (but it used to work, so not this reason)

Tested each of them with the motor before plugging in an they are wired correctly

Failed driver on the Duet (but you have already changed it, so not this reason)

Failed motor (least common)

Tested with 3 Steppers by now, unlikely.

OK, tested something different as well:
I did plug in the CoreXY config SD into another printer and it doesn't work. Plugging in the normal config works fine...
So I think this means it's not the cable, stepper or driver, but the config or FW?

I could try to update the FW to the newest version

T3P3Tony

@flo was the other test printer also setup to use the same driver to run E0. Did it fail in the same way (vibrating driver?) in that case it sounds like the current is too low.

deckingman

If I understand correctly, it was all working fine and then suddenly stopped working yes? Did you make any changes between when it worked and when it stopped working, including changes to firmware? If the answer is no, then the cause is unlikely to be firmware unless the file(s) have got corrupted somehow (unlikely). You get the same behaviour using different driver chips, different motors, and different cables yes?

If the answer to all the above are yes, then the only common denominator is the hot end itself. i.e. you have a blockage and the extruder can't push the filament against this blockage so it "vibrates". The other alternative might be something mechanically wrong with the nimble causing it to bind, stick or otherwise not rotate, but I have no experience of these so can't comment further.

Flo

@deckingman said in Extruder Stepper suddenly only vibrates:

If I understand correctly, it was all working fine and then suddenly stopped working yes? Did you make any changes between when it worked and when it stopped working, including changes to firmware? If the answer is no, then the cause is unlikely to be firmware unless the file(s) have got corrupted somehow (unlikely). You get the same behaviour using different driver chips, different motors, and different cables yes?

If the answer to all the above are yes, then the only common denominator is the hot end itself. i.e. you have a blockage and the extruder can't push the filament against this blockage so it "vibrates". The other alternative might be something mechanically wrong with the nimble causing it to bind, stick or otherwise not rotate, but I have no experience of these so can't comment further.

I did not make any changes to config or Firmware.
I did check the extruder for blockage and everything worked fine, until I applied power.
This applied to any stepper I connected, even without any load on it.

I just created a new config and everything works now, seems the config got somehow corrupted in between or the SD had a bad sector.

Flo

This post is deleted!

Knaudler

hi

wich extruder needs 2740 steps/mm ?

I'm using an Bondtech BMG - needs 410 steps (with I1)

deckingman

@knaudler said in Extruder Stepper suddenly only vibrates:

hi

wich extruder needs 2740 steps/mm ?

I'm using an Bondtech BMG - needs 410 steps (with I1)

He said it was a Zesty nimble. Those sort of flex drives have a lot of gearing.

Knaudler

@deckingman said in Extruder Stepper suddenly only vibrates:

Zesty nimble

ok, thanks