Magnetic sensor dead?

jchodakowski

So, was working last night. Woke up this morning, started a print and it immediately paused, with a sensor error. M591 D0 yielded this:

Duet3D magnetic filament monitor on input 3, enabled, sensitivity 25.20mm/rev, allow 70% to 140%, check every 3.0mm, version 3, mag 132 agc 89, error 4

I power cycled and the error 4 went away but the monitor still pauses the print. I've disassembled the monitor and it looks mechanically sound. Led flashes seem normal - I've not checked for error codes specifically.

Thoughts?

elmoret

@dc42 @T3P3Tony Could you assist, please?

Phaedrux

@jchodakowski What LED flashes do you get specifically?
https://duet3d.dozuki.com/Wiki/Duet3dFilamentMonitor_RotatingMagnetVersion#Section_Status_indication_LEDs

jchodakowski

It flashes green three times, there are no error flashes

T3P3Tony

I notice that is reporting error number 4 , but not flashing with the 4 led blinks which would indicate error 4. That is odd.

Can you do a M591 D0 immediate after starting the Duet and filament monitor and see if an error number is report (or if you get the LED flashes other than three on startup).

jchodakowski

After a power cycle it behaves "normally" in that it flashes green, starts communicating with the duet. A M591 D0 asap yields this:

Duet3D magnetic filament monitor on input 3, enabled, sensitivity 25.20mm/rev, allow 70% to 140%, check every 3.0mm, version 3, mag 132 agc 89, no calibration data

However when a print actually starts (warmups done) the system will immediately report an error from the sensor and the print never starts. Filament never even moves.

T3P3Tony

@jchodakowski we will replace the sensor under warranty. Are you ok with swapping out the PCB only from the housing? That will be quicker as we don't have housings in stock right now.

jchodakowski

Yeah, that works fine

jchodakowski

@T3P3Tony said in Magnetic sensor dead?:

@jchodakowski we will replace the sensor under warranty. Are you ok with swapping out the PCB only from the housing? That will be quicker as we don't have housings in stock right now.

What's my next step?

Phaedrux

@jchodakowski contact the vendor and initiate a warranty exchange. Refer to this thread as authorization.

elmoret

That's not possible, we don't have any MFM parts, PCB or otherwise. I pointed @jchodakowski to contact Duet3D directly but perhaps he forgot.

Phaedrux

In that case, see the form here: https://www.duet3d.com/warranty