Loss of z axis.

[peter247]

@craigylad86 if you get juddering from a stepper motor that mean you have lost a pole .
I would say check the cables again and look at the stepper , I've had a stepper motor die because of bad soldering inside the motor.
Try removing the cable from the board and checking for the poles with a multimeter ?

[Craigylad86]

@peter247 thank you Peter. To check the motor i have connected the X axis to the z motor and selected the X axis on the dashboard.
Doing this makes the z motor work as it's commanded

[peter247]

@craigylad86 That is my second idea swap axis which checks the cable and motor .
Does look to be the board ?
did you just swap the cables on the board ?

[Craigylad86]

@peter247
Yes..
So I swapped the Z and X axis on the board.
This provide the the opposite results as the issue I was having.
X on the board would control Z motor
Z on the board would not move X motor

[peter247]

@craigylad86 I would say logically if you swap the 2 plugs on the board and Z now works but X doesn't I would say that rules out the cables and motor ?

Would not move or get a judder ?

[Craigylad86]

@peter247
that's what I have concluded.
Z on the board does not move X motor at all, not even a juder.
In fact there is no resistance in the motor, I can manually move the axis.
This is true when the board z is connected to eather X or z motor.

[peter247]

@craigylad86 if you haven't changed the config.g file and not configured Z, I would say you have killed the Z driver on the board ?

[Craigylad86]

@peter247
All the axis failed to home. So i opened the program.
The only reconfigure I have done is to open all axis from not having to home before activity. As described when setting up and fault finding.

Think it's m1 to a m0. Or similar can't recal without looking.

If the z on the board is dead
What can I do?

Is it a board replacement situation?

[jay_s_uk]

@craigylad86 post an output of M115 and a copy of your config. If you're not using E0 or E1, you can map Z to one of those

[peter247]

@craigylad86 As jay-s-uk says you can use E0 or E1 as a Z axis .
This is my mapping M584 X0 Y1 Z2:3 E4 , which makes Z and E0 both Z axis motors .

[Craigylad86]

@peter247 ok so I have limited knowledge on computers and part names I'm learning as I go along.
I'm assuming e0 or e1 to be other ports.
Is this the one directly underneath the z on the board?
Or the one at the end of the row?

[Craigylad86]

@craigylad86 and you want me to change the commands to controle z to go through port e0 and use that as a route.
So I have to then reconfigure a section of the program.

[peter247]

@craigylad86

https://duet3d.dozuki.com/Wiki/Duet_Wiring_Diagrams

E1 is next to the extruder heater , so you want to jump from the 2 plug Z plugs to the other side.

also you need to do a configuring ?

M569 P4 S1 to what P2 was and M584 X0 Y1 Z3 E4

So your first extruder is now the Z and E1 your first extruder.

[Craigylad86]

@peter247 ok that diagram is brilliant thanks.
I have z2 available
And e1 available.
Would the z2 also be affected by my malfunctioning z chip?

Should I just go straight to e1?

[peter247]

@craigylad86 said in Loss of z axis.:

I have z2 available
And e1 available.

You mean you have only 1 plug in Z2 and the other are jumper ?
the 2 Z plugs are the same driver but the 2 plugs are wired in series.

yes move z to e1

also you need to do a configuring ?

; Drives
M569 P0 S1 ; physical drive 0 goes backwards
M569 P1 S0 ; physical drive 1 goes backwards
M569 P2 S? ****** remove this
M569 P3 S0 ; extruder
M569 P4 S? ****** add this extruder E1 is now Z

? = what s was before , us you direction setting NOT MINE.

M584 X0 Y1 Z4 E3

[Craigylad86]

@peter247
My drives
Same as your except my m584
My reads

M584 x0 y1:3 z2; apply drive mapping to axis

[Craigylad86]

@peter247
Good news guys..

I have now altered the config.

As follows

M569 P0 S0 ; Drive goes forwards
M569 P1 S1 ; Drive goes forwards
M569 P2 S0 ; Drive goes forwards
M569 P3 S1 ; Drive goes forwards
M584 X0 Y1 Z4 E3

I have now a functional z axis. 🥳
But I have a new problem.
I have 2 y axis stepper motors.
Since I have change this config I have only 1 working.

Any suggestions please
Do I change the m584 part so it's y2?
Or is that something different?

[jay_s_uk]

@craigylad86 said in Loss of z axis.:

M584 X0 Y1 Z4 E3

M584 X0 Y1:3 Z4 E2 (unless you're on 3.3.0 where you can omit the E entirely)

[Craigylad86]

@jay_s_uk
absolutely Bluddy brilliant..

I am now up and running again..

Thank you so much both of you

[Craigylad86]

@jay_s_uk
no way
Z is now running in reverse..