Z axis only goes one way
Posted by Adroid
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Z axis only goes one way February 21, 2020 12:12PM |
Registered: 7 years ago Posts: 10 |
Hi all,
I received an MKS Gen v1.4 replacement for my Tronxy x1. Flashed it with Repetier and using RepRapdiscount full graphics display. Only problem I am having is that the Z axis only wants to go down not up. Wit power off I raise the Z axis and then power the board on and try the homing and all is good. Then I move the X and Y axis in both directions (no problem). However the Zaxis only clicks when I try to move it up. Swapped driver boards and still does the same thing. Checked ref. voltage and It is good. And now I am at a loss.
I received an MKS Gen v1.4 replacement for my Tronxy x1. Flashed it with Repetier and using RepRapdiscount full graphics display. Only problem I am having is that the Z axis only wants to go down not up. Wit power off I raise the Z axis and then power the board on and try the homing and all is good. Then I move the X and Y axis in both directions (no problem). However the Zaxis only clicks when I try to move it up. Swapped driver boards and still does the same thing. Checked ref. voltage and It is good. And now I am at a loss.
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Re: Z axis only goes one way February 21, 2020 01:32PM |
Registered: 8 years ago Posts: 1,948 |
What stepper motors do you have?
What are you using for a Lead-screw?
What is your current ref voltage for the Z-Axis, and do you have dual Z-Axis steppers?
On My 3D Printers I have dual Z-Axis stepper motors and have to use almost double the ref voltage.
Edited 1 time(s). Last edit at 02/21/2020 01:34PM by Roberts_Clif.
Computer Programmer / Electronics Technician
What are you using for a Lead-screw?
What is your current ref voltage for the Z-Axis, and do you have dual Z-Axis steppers?
On My 3D Printers I have dual Z-Axis stepper motors and have to use almost double the ref voltage.
Edited 1 time(s). Last edit at 02/21/2020 01:34PM by Roberts_Clif.
Computer Programmer / Electronics Technician
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Re: Z axis only goes one way February 21, 2020 07:58PM |
Registered: 7 years ago Posts: 10 |
Answering Roberts_Clif questions. My stepper motors are all sl42sth34-1504a, Lead-screw is 8mm (4 starts?), ref. voltage for zaxis is .63 with just 1 stepper. I managed to replace the damaged chip on the Melzi board and all motors move the way they should. I really like the MKS board and I would like to use it instead. I think it is very wierd that the z axis will only move down. Reversing direction doesn't seem to help.
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Re: Z axis only goes one way February 21, 2020 08:31PM |
Registered: 8 years ago Posts: 1,948 |
I really like my controller style though its drivers are soldered to the controller.
Tried to replace the fried drivers without success, believe the replacement chips i purchased were not pin compatible.
Your stepper motor should be able to lift the Z-Axis wonder why it is not.
Did you measured the Melzi to get ref voltage for the MKS, if so you may want to tweak it up or down a little to see if a little higher or lower will make it work.
Computer Programmer / Electronics Technician
Tried to replace the fried drivers without success, believe the replacement chips i purchased were not pin compatible.
Your stepper motor should be able to lift the Z-Axis wonder why it is not.
Did you measured the Melzi to get ref voltage for the MKS, if so you may want to tweak it up or down a little to see if a little higher or lower will make it work.
Computer Programmer / Electronics Technician
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Re: Z axis only goes one way February 21, 2020 10:23PM |
Registered: 7 years ago Posts: 10 |
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Re: Z axis only goes one way February 21, 2020 10:41PM |
Registered: 7 years ago Posts: 10 |
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