motor phase A may be disconnected reported by driver(s) 0 1 2

fredvm

I'm running some test calibrations and it's not only phase A

G32
Warning: motor phase A may be disconnected reported by driver(s) 0 1
Warning: motor phase B may be disconnected reported by driver(s) 0 1

dc42

Do the warnings appear only when you run the motors at high speeds? What are your axis steps/mm?

fredvm

No, i don't think so. I'm running at an avereage speed of 45 mm/s.

M92 X80 Y80 Z80 ; Set axis steps/mm

i'll put my full config.g below:

; Configuration file for SeeMeCNC Rostock MAX V3

; Communication and general
M111 S0 ; Debug off
M550 PSeeMeCNCRostockMAXV3 ; Machine name and Netbios name (can be anything you like)
M551 Retteket3t ; Machine password (used for FTP)
;*** If you have more than one Duet on your network, they must all have different MAC addresses, so change the last digits
M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0xEA ; MAC Address
;*** Wifi Networking
M552 S1 ; Enable WiFi

M555 P2 ; Set output to look like Marlin
M575 P1 B57600 S1 ; Comms parameters for PanelDue

G21 ; Work in millimeters
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves

; Axis and motor configuration
M569 P0 S1 ; Drive 0 gaxioes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M569 P4 S0 ; Drive 4 goes forwards
M574 X2 Y2 Z2 S1 ; set endstop configuration (all endstops at high end, active high)
;*** The homed height is deliberately set too high in the following - you will adjust it during calibration
M665 R144.158 L291.06 B120 H392.701 X0 Y0 Z0 ; set delta radius, diagonal rod length, printable radius and homed height
M666 X0 Y0 Z0 ; put your endstop adjustments here, or let auto calibration find them
M350 X16 Y16 E16 I1 ; Set 16x microstepping with interpolation
M92 X80 Y80 Z80 ; Set axis steps/mm
M906 X1000 Y1000 Z1000 E1200 I60 ; Set motor currents (mA) and increase idle current to 60%
M201 X1000 Y1000 Z1000 E1000 ; Accelerations (mm/s^2)
M203 X20000 Y20000 Z20000 E3600 ; Maximum speeds (mm/min)
M566 X1200 Y1200 Z1200 E1200 ; Maximum instant speed changes mm/minute

; Thermistors
M305 P0 T100000 B3950 R4700 H30 L0 ; Put your own H and/or L values here to set the bed thermistor ADC correction
M305 P1 T100000 B3974 R4700 H30 L0 ; Put your own H and/or L values here to set the first nozzle thermistor ADC correction
;M305 P2 T100000 B3974 R4700 H30 L0 ; Put your own H and/or L values here to set the second nozzle thermistor ADC correction
M570 S180 ; Hot end may be a little slow to heat up so allow it 180 seconds

; Fans
M106 P1 H-1 ; disable thermostatic mode for fan 1

; Tool definitions
M563 P0 D0 H1 ; Define tool 0
G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures
;*** If you have a single-nozzle build, comment the next 2 lines
;M563 P1 D1 H2 ; Define tool 1
;G10 P1 S0 R0 ; Set tool 1 operating and standby temperatures
M92 E450:450 ; Set extruder steps per mm

; Z probe and compensation definition
M558 P5 X0 Y0 Z1 H5 F1200 T2400

; grid compensation
M557 R110 S15

G31 X0 Y0 Z-0,5 P500 ; Set the zprobe offset and threshold (determine your printer's Z offset value). For a delta, use zero X and Y offset.

;*** If you are using axis compensation, put the figures in the following command
M556 S78 X0 Y0 Z0 ; Axis compensation here

M501;

T0 ; select first hot end

Phaedrux

@fredvm said in motor phase A may be disconnected reported by driver(s) 0 1 2:

M350 X16 Y16 E16 I1 ; Set 16x microstepping with interpolation
M92 X80 Y80 Z80 ; Set axis steps/mm

Your M350 is missing a value for Z and your M92 is missing a value for E

fredvm

@fredvm said in motor phase A may be disconnected reported by driver(s) 0 1 2:

M350

wow, thanks for noticing that!
I'll add the right values and see what happens.

fredvm

Nope, still got the warning:

G32

Warning: motor phase A may be disconnected reported by driver(s) 0 1
Warning: motor phase B may be disconnected reported by driver(s) 0 1

wilriker

@phaedrux said in motor phase A may be disconnected reported by driver(s) 0 1 2:

@fredvm said in motor phase A may be disconnected reported by driver(s) 0 1 2:

M350 X16 Y16 E16 I1 ; Set 16x microstepping with interpolation
M92 X80 Y80 Z80 ; Set axis steps/mm

Your M350 is missing a value for Z and your M92 is missing a value for E

Just for the sake of completeness: default value for M350 is 16x interpolated (all axes) and default for M92 Ennn is 420 (X, Y=80 and Z=4000).

Veti

@wilriker said in motor phase A may be disconnected reported by driver(s) 0 1 2:

default for M92 Ennn is 420 (X, Y=80 and Z=4000).

not 400?

wilriker

@veti said in motor phase A may be disconnected reported by driver(s) 0 1 2:

not 400?

Here's the responsible part of Configuration.h

constexpr float DefaultXYDriveStepsPerUnit = 80.0;		// steps/mm
constexpr float DefaultZDriveStepsPerUnit = 4000.0;
constexpr float DefaultEDriveStepsPerUnit = 420.0;

Veti

@wilriker said in motor phase A may be disconnected reported by driver(s) 0 1 2:

Here's the responsible part of Configuration.h

i would say that might be an oversight. 400 is way more common than 4000. I dont even know how you would get that.

wilriker

@veti said in motor phase A may be disconnected reported by driver(s) 0 1 2:

i would say that might be an oversight. 400 is way more common than 4000. I dont even know how you would get that.

M5 threaded rod with a lead of 0.8mm. I think this was the default in Mendel printers - and Adrian Bowyer the original author of RRF is also the creator of that printer. I guess that setting stuck since.

Phaedrux

@wilriker Having used a printer with 0.8mm M5 threaded rod I can say that it actually worked quite well. So long as the rods were straight and the threads of the rod and nuts held out. Proper lubrication was a must. Those things would get hot during a long Z axis move.

dc42

I have moved a number of posts from this thread to topic "Duet sometimes really slow? - I2C error or?".