Core XY multiple z-axis stall detection
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Hello, everyone.
I am trying to configure my Core XY printer.Configuration:
Duet2 Wifi, Duex2, Firmware 3.01RC11, Four Z Steppers connected to "Drive 0, 1, 2, 3".End stop of the Z axes is at Z max (bottom). Attached my Config and a Z-Home macro.
The problem is (when running the macro), the four Z-Steppers drive down the bed (+z), but when hitting the frame they don't turn off. The steppers rattle until I stop it manually.
I have already tried different stall detection thresholds between +20 and -64.
Can anyone help me with my problem?
Many thanks in advance.Z-Home
M400 ; make sure everything has stopped before we make changes M915 P0:1:2:3 S-64 F0 R0 H400 ; Configure motor stall detection M574 Z2 S4 ; configure sensorless endstop for high end on Z M913 Z20 ; reduce motor current to 20% G91 ; use relative positioning G1 H1 Z700 F4000 ; move Z 700mm down, stopping at the endstops G90 ; back to absolute positioning M400 ; make sure everything has stopped before we reset the motor current M913 Z100 ; motor currents back to normalConfig
; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"CoreXY" ; set printer name M667 S1 ; select CoreXY mode ; Drives M569 P5 S1 ; physical drive 5 goes forwards M569 P6 S1 ; physical drive 6 goes forwards M569 P0 S1 ; physical drive 0 goes forwards M569 P1 S1 ; physical drive 1 goes forwards M569 P2 S1 ; physical drive 2 goes forwards M569 P3 S1 ; physical drive 3 goes forwards M569 P4 S1 ; physical drive 4 goes forwards M584 X5 Y6 Z0:1:2:3 E4 ; set drive mapping Z = front left, front right, rear left, rear right M671 X-166.4:166.4:-166.4:166.4 Y-172.525:-172.525:172.525:172.525 ; leadscrews at front left, front right, rear left, rear right M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X160.00 Y160.00 Z400.00 E873.08 ; set steps per mm M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00 Z300.00 E1200.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2) M906 X1700 Y1700 Z1300 E1700 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X-157.6 Y-162.5 Z0 S1 ; set axis minima M208 X157.6 Y162.5 Z295 S0 ; set axis maxima ; Endstops M574 X1 S3 ; configure sensorless endstop for low end on X M574 Y1 S3 ; configure sensorless endstop for low end on Y M574 Z2 S4 ; configure sensorless endstop for high end on Z ; Z-Probe M558 P0 H5 F120 T6000 ; disable Z probe but set dive height, probe speed and travel speed M557 X-150:150 Y-150:150 S20 ; define mesh grid ; Heaters M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0 M143 H0 S120 ; set temperature limit for heater 0 to 120C M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M308 S1 P"spi.cs1" Y"rtdmax31865" ; configure sensor 1 as thermocouple via CS pin spi.cs1 M950 H1 C"duex.e2heat" T1 ; create nozzle heater output on duex.e2heat and map it to sensor 1 M143 H1 S280 ; set temperature limit for heater 1 to 280C M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit ; Fans M950 F0 C"duex.fan3" Q500 ; create fan 0 on pin duex.fan3 and set its frequency M106 P0 C"Pump" S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off M950 F1 C"duex.fan4" Q500 ; create fan 1 on pin duex.fan4 and set its frequency M106 P1 C"120mm Fan" S1 H1 T45 ; set fan 1 name and value. Thermostatic control is turned on M950 F2 C"duex.fan5" Q500 ; create fan 2 on pin duex.fan5 and set its frequency M106 P2 C"Part Cooling" S1 H-1 ; set fan 2 name and value. Thermostatic control is turned off ; Tools M563 P0 S"Hotend" D0 H1 F2 ; define tool 0 G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C -
Have you checked that your Z homing move is above the minimim speed for stall detection?
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See the calculation there to determine your H value.
