I have a delta build I’ve been working on for the last 6 months (including design, I’m not that slow).
It uses a 24v 600w 25A power supply, with a 380mm heated bed. When printing the printer will sometimes just stop for no apparent reason, the motors disable and the hotend drops. This often happens after the hotend/ bed have finished heating and the head starts to descend to start printing. No error on the LCD, just continues saying ‘printing…’ but the printer becomes unresponsive over the web interface.
Other times it works just fine.
Any ideas?
Imported from wikidot
What slicing software are you using ?
Does it always happen at the same point in files ?
Can you try another PSU ?
Using Cura currently, coincidentally I’ve just noticed it happened at the same place tonight on a print I’m trying to do.
Unfortunately I don’t have another PSU to test…
Can you locate ( or reproduced reliably ) the exact moment when this happens ?
If so can you describe the behavior and status of all 6 status LEDs before, during, and after the stop ?
Unfortunately the Smoothieboard is beneath the bed (it has cooling) and not visible.
Not sure how I’d work out the point in the Gcode where is stalls… is there a Gcode simulator where I could parse through it line by line?
Oh and thanks for helping me out!
Well you don’t have to pinpoint a gcode line, just pinout a time, with a clock.
Ah… OK, I’ll see what I can sort out.
I’ve come up with a different plan, I have a shell open and when it fails I can try an M114 which should tell me the extrusion length and therefore the Gcode line. That’s if the shell still works when it stalls!
Right… Progress (of sorts)…
Had the shell open ready to check the extruded length and low and behold an error appeared. This doesn’t appear in the webui or on the LCD panel.
“ERROR: Temperature took too long to be reached on B, HALT asserted, TURN POWER OFF IMMEDIATELY - reset or M999 required”
Looking at the webui the temperature looked just fine (Flikr is being a pain so can’t upload a grab of it).
This doesn’t explain why it seems to happen at the same point though?
Please upgrade to the very latest edge, and see if it changes.
Done, going to kick off the print then go to bed, 3D printers are not compatible with early nights it seems!!! 
Hi there,
I had the same problem some time ago, i solved it by adding the pid parameters to the bed and do the bed autotune, the parameters comes out completely different, but now is working great, no other fail or bad messages.
My two cents
Regards
EmanuelB, Thanks but this appears to be fixed now by following Athurwolf’s advice.
Arthurwolf, That appears to have done the trick as the print completed! Many thanks for the swift responses!!!