motor phase A may be disconnected help a newby out

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.