Crash detected and after recovering, the x Axis is shifted 0.2mm
After one year of successful usage, my mk3s has a problem printing the object shown here.
During printing, suddenly the z axis moves up a bit, x axis is homing, and printer tries to resume printing. I tried to print the part 5 times, 2 times successful and 3 times I had that crash (on different layers but always 3-4 cm above bed, part should be 16cm high).
After recovering, x axis is shifted .1 or .2 mm to the right. See pictures. Why doesn't it recover to the correct position?
The x axis belt seems tight enough, stepper gear wheel screws are tight. 1st layer sticks well to the bed on all sides. Material is Prusa ABS, Filament temp 260, enclosure temp 42. Settings were used often before without such problems.
Serial log is shown below.
Any ideas?
2021-11-20 20:13:43,041 - Recv: ok 2021-11-20 20:13:43,045 - Send: N16382 G1 X120.736 Y90.024 F10800.000*88 2021-11-20 20:13:43,070 - Recv: ok 2021-11-20 20:13:43,074 - Send: N16383 G1 F8640.000*85 2021-11-20 20:13:43,631 - Recv: ok 2021-11-20 20:13:43,634 - Send: N16384 G1 X124.006 Y89.588 E-0.76000*115 2021-11-20 20:13:43,648 - Recv: ok 2021-11-20 20:13:43,650 - Send: N16385 G1 E-0.04000 F2100.000*56 2021-11-20 20:13:43,664 - Recv: ok 2021-11-20 20:13:43,667 - Send: N16386 G1 Z44.400 F10800.000*3 2021-11-20 20:13:44,107 - Recv: ok 2021-11-20 20:13:44,111 - Send: N16387 G1 X121.485 Y90.663*19 2021-11-20 20:13:44,679 - Recv: ok 2021-11-20 20:13:44,682 - Send: N16388 G1 Z43.800*71 2021-11-20 20:13:44,770 - Recv: ok 2021-11-20 20:13:44,773 - Send: N16389 G1 E0.80000 F2100.000*21 2021-11-20 20:13:45,183 - Recv: T:254.6 /255.0 B:111.9 /112.0 T0:254.6 /255.0 @:50 B@:78 P:68.6 A:58.3 2021-11-20 20:13:45,429 - Recv: ok 2021-11-20 20:13:45,433 - Send: N16390 G1 F1175*65 2021-11-20 20:13:45,933 - Recv: ok 2021-11-20 20:13:45,937 - Send: N16391 G1 X123.985 Y90.663 E0.15140*81 2021-11-20 20:13:45,949 - Recv: ok 2021-11-20 20:13:45,970 - Send: N16392 G1 X124.311 Y90.337 E0.02785*95 2021-11-20 20:13:46,961 - Recv: ok 2021-11-20 20:13:46,965 - Send: N16393 G1 X125.689 Y90.337 E0.08349*85 2021-11-20 20:13:47,191 - Recv: ok 2021-11-20 20:13:47,195 - Send: N16394 G1 X126.015 Y90.663 E0.02785*88 2021-11-20 20:13:47,199 - Recv: echo:enqueing "G1 E-1.000 F2700" 2021-11-20 20:13:47,201 - Recv: echo:enqueing "G1 Z53.800 F800.000" 2021-11-20 20:13:47,204 - Recv: T:254.5 /255.0 B:112.0 /112.0 T0:254.5 /255.0 @:48 B@:66 P:68.6 A:58.3 2021-11-20 20:13:47,211 - Recv: echo:enqueing "CRASH_DETECTEDY" 2021-11-20 20:13:48,101 - Recv: LCD status changed 2021-11-20 20:13:48,110 - Recv: tmc2130_home_enter(axes_mask=0x01) 2021-11-20 20:13:49,390 - Recv: T:254.2 /255.0 B:112.1 /112.0 T0:254.2 /255.0 @:49 B@:52 P:68.6 A:58.3 2021-11-20 20:13:49,395 - Recv: echo:busy: processing 2021-11-20 20:13:51,246 - Recv: 0 step=30 mscnt= 481 2021-11-20 20:13:51,261 - Recv: tmc2130_goto_step 0 61 2 1000 2021-11-20 20:13:51,344 - Recv: tmc2130_home_exit tmc2130_sg_homing_axes_mask=0x01 2021-11-20 20:13:51,458 - Recv: tmc2130_home_enter(axes_mask=0x02) 2021-11-20 20:13:51,544 - Recv: T:254.3 /255.0 B:112.1 /112.0 T0:254.3 /255.0 @:45 B@:59 P:68.6 A:58.4 2021-11-20 20:13:51,549 - Recv: echo:busy: processing 2021-11-20 20:13:53,643 - Recv: T:254.1 /255.0 B:112.1 /112.0 T0:254.1 /255.0 @:46 B@:64 P:68.6 A:58.4 2021-11-20 20:13:53,670 - Recv: echo:busy: processing 2021-11-20 20:13:54,617 - Recv: 0 step=50 mscnt= 800 2021-11-20 20:13:54,621 - Recv: tmc2130_goto_step 1 33 2 1000 2021-11-20 20:13:54,699 - Recv: tmc2130_home_exit tmc2130_sg_homing_axes_mask=0x02 2021-11-20 20:13:54,806 - Recv: echo:enqueing "CRASH_RECOVER" 2021-11-20 20:13:55,870 - Recv: T:254.3 /255.0 B:112.1 /112.0 T0:254.3 /255.0 @:43 B@:61 P:68.6 A:58.3 2021-11-20 20:13:56,911 - Recv: echo:busy: processing 2021-11-20 20:13:57,968 - Recv: T:254.4 /255.0 B:112.1 /112.0 T0:254.4 /255.0 @:41 B@:66 P:68.6 A:58.3 2021-11-20 20:13:58,537 - Recv: Resend: 16376 2021-11-20 20:13:58,551 - Recv: ok 2021-11-20 20:13:58,552 - Recv: LCD status changed 2021-11-20 20:13:58,553 - Send: N16376 G1 X121.315 Y131.375 E1.35395*104 2021-11-20 20:13:58,566 - Recv: ok 2021-11-20 20:13:58,567 - Send: N16377 G1 X118.965 Y131.375 E0.07954*105 2021-11-20 20:13:58,579 - Recv: ok 2021-11-20 20:13:58,580 - Send: N16378 G1 X118.965 Y78.625 E1.78552*89 2021-11-20 20:13:58,595 - Recv: ok 2021-11-20 20:13:58,596 - Send: N16379 G1 X120.715 Y78.625 E0.05924*92 2021-11-20 20:13:58,606 - Recv: ok 2021-11-20 20:13:58,607 - Send: N16380 G1 X120.715 Y89.565 E0.37031*95 2021-11-20 20:13:58,619 - Recv: ok 2021-11-20 20:13:58,620 - Send: N16381 M204 S1000*90 2021-11-20 20:13:58,643 - Recv: ok 2021-11-20 20:13:58,644 - Send: N16382 G1 X120.736 Y90.024 F10800.000*88 2021-11-20 20:13:58,656 - Recv: ok 2021-11-20 20:13:58,657 - Send: N16383 G1 F8640.000*85 2021-11-20 20:13:58,663 - Recv: ok 2021-11-20 20:13:58,665 - Send: N16384 G1 X124.006 Y89.588 E-0.76000*115 2021-11-20 20:13:58,676 - Recv: ok 2021-11-20 20:13:58,677 - Send: N16385 G1 E-0.04000 F2100.000*56 2021-11-20 20:13:58,689 - Recv: ok 2021-11-20 20:13:58,690 - Send: N16386 G1 Z44.400 F10800.000*3 2021-11-20 20:13:58,700 - Recv: ok 2021-11-20 20:13:58,702 - Send: N16387 G1 X121.485 Y90.663*19 2021-11-20 20:13:58,713 - Recv: ok 2021-11-20 20:13:58,714 - Send: N16388 G1 Z43.800*71 2021-11-20 20:13:58,725 - Recv: ok
RE: Crash detected and after recovering, the x Axis is shifted 0.2mm
I checked the belt status, and the printer said:
X-Axis: 260
Y-Axis: 220
I then lubricated the linear rods and after that, it said:
X-Axis: 260
Y-Axis: 290
maybe the Y-Axis rods were moving hard due to not being lubed since months?
Maintenance time is here
Have you isolated what's triggering the crash - when it happens, do you hear a "thump", followed by crash detected behavior? Go into your control panel, disable/disengage the steppers. Then, slowly... grab the belt next to the extruder on the right side (top belt) and pull the belt to the right - slowly and steadily. The extruder should start moving with your hand. You are trying to observe how smooth the travel is, and are looking to see if a hiccup in the X axis left-right motion is triggering a crash. An uneven or stuttery movement anywhere along the length of the axis is a sign that maintenance is required (remove/replace the linear bearings, pack them with grease). Once all the way to the right, repeat from the left side of the extruder - pull it across to the left all of the way back to the left hand side. Again checking for anything other than controlled smooth movement. The stepper motor and belt tension will keep it from "rolling freely" - so you have to be putting steady enough pressure to make the extruder body move left or right as you pull on the upper belt in that direction.