motor phase A may be disconnected help a newby out

Fisher

Im in pthe process of commisioning my new core XY build, I've never used duet electronics before and im having an issue getting the motors running. When homing either the X or Y axis the tool head will move 10mm or so before stopping and the board returns

G28 Y
Warning: motor phase A may be disconnected reported by driver(s) 2
Warning: motor phase B may be disconnected reported by driver(s) 2

im sure its somthing im doing wrong, the fact that im getting a bit of movement is heartning.
im using e3d's 'high torque motors' on the x and y.

Step Angle: 0.9°
Rated Current: 1.68A

heres the relevent part of my config.g:

; Drives
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
M584 X0 Y1 Z2 E3                               ; set drive mapping
M350 X16 Y16 Z16 E16 I1                        ; configure microstepping with interpolation
M92 X200.00 Y200.00 Z400.00 E420.00            ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00            ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00        ; set maximum speeds (mm/min)
M201 X100.00 Y100.00 Z20.00 E250.00            ; set accelerations (mm/s^2)
M906 X1600 Y1600 Z1600 E800 I30                ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                        ; Set idle timeout

System is running on 24v, Anyone know what i might be doing wrong? TIA

Fisher

Forgot to say im using a duet2wifi firmware ver 3.1.1

jay_s_uk

have you wired the cables yourself or are you using the cables that came with the motor?

Fisher

cables came with the motors, the small ammount of movement i am getting is in the correct direction when homing.

Phaedrux

Check your motor phases are paired correctly and that the crimps are good.

https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors#Section_Identifying_the_stepper_motor_phases

dc42

Driver 2 is the one marked Z. There are two output connectors for that driver, connected in series. If you have only one Z motor, do you have 2 jumpers in the second Z motor connector? If it's a genuine Duet, it should have been supplied with those jumpers already fitted.

Fisher

solved: incorectly wired endstops... i knew it would be somthing silly, thanks all the same.

Nellor

@dc42
Im running the current version 3.2-RC2 (2020-12-24) at a Duet 3 6HC

When homing the Y-Axis I get a warning:
Warning: motor phase A may be disconnected reported by driver(s) 2
Warning: motor phase B may be disconnected reported by driver(s) 2

What does the number 2 means? Thought it indicates the corresponding drivers in that case number 1.
I only connected Y at the Driver_1 connector and the corresponding endstop.

; Drives
M569 P0.0 S0 ; physical drive 0.0 goes backwards
M569 P0.1 S0 ; physical drive 0.1 goes backwards
M569 P0.2 S1 ; physical drive 0.2 goes forwards
M569 P0.3 S0 ; physical drive 0.3 goes backwards
M584 X0.0 Y0.1 Z0.2 E0.3 ; set drive mapping

What wonders me even more is if I try to Home X - of course no motor/endstop is connected to X I get the same warning.

A Former User

@Nellor said in motor phase A may be disconnected help a newby out:

What does the number 2 means?

probably best to start a new thread rather than continuing someone elses solved thread.

drivers are usually
0=x
1=y
2=z
3=e0
4=e1

edit: d'oh .. the duet3, unlike they duet 2, the numbers match the pcb silk screen so just refer to the board and see what you've connected to driver2.

Nellor

@bearer
I posted that here as maybe something is wrong with the number indication at the warning where DC42 assumed the thread opener is talking about Z - I assume he never talked about z axis...

With your explanation it makes even more no sense with the warning.

I will delete or shift the post if it is a big problem.

A Former User

its not a problem as such; its just not easy for others to relate to a solved topic with a new question, and notifications go to everyone else, but not necessarily you etc.

Nellor

Ok, got it... will delete or move it.

I found out whats the reason of getting it when I Home Y.

If nothing else is wired besides the Y-Axis you will get all the time this warning. So i assumed it must be Y related even showing Z.
If you don't know that a Y movement results also in a short Z move/lift you end up with not understanding whats going on...
In my case even a Duet Maestro connected before at this build stage without warning.

-> Hooked up also a Z Motor and the warning is gone.

Phaedrux

@Nellor Your homing file probably has a Z lift.