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reibuehl

"Z Switch broken" Error Message

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Did you look at the z switch? Often something falls down into that hole. There is a screw sticking out the bottom of your bed that sticks down into the hole where the z switch is. It's probably stuck.

Anyway you can turn of power and test the resistance of the z switch with the switch pushed and not pushed.

 

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rob - I recommend you take the bottom cover off - you have to raise the bed with power off by lifting firmly to access the 2 screws under the bed that let you take the bottom cover off. It's all quite easy to do.

Then hook up a multimeter to the z switch under your printer and measure that it is open and then push the lever and make sure it is shorted (switch is "on").

 

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@reibuehl - Would you consider downgrading your firmware to 14.12? You can get it by loading Cura from here:

http://software.ultimaker.com/old/

Install Cura 14.12 (it will not affect your other copies of Cura - Cura is strange in that you can have many versions installed at the same time) then connect computer to printer through USB cable and the Cura wizard should hopefully prompt you to load the correct firmware (UM2 firmware).

I have this theory (that may be wrong) and if I'm right, your limit switch problems (all of you possibly) may go away in version 14.12 or older.

 

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I just learned that version 14.09 doesn't check the X,Y endstop switches. lol. So certainly you won't get the error there.

I also learned the XY error message has been removed from version 15.02 (and 15.02RC2 and 15.02.1 but message is in 15.02RC1). So you might want to upgrade your firmware to 15.02. The Z message is still there.

I learned just now from tech support that usually this error means you have a loose pulley and the X,Y or Z axis is drifting towards the 0 position (left or front depending on axis) and eventually the endstop switch gets hit. So the error usually means "loose pulley".

If you have a loose pulley it's more obvious by looking at the part because each layer is moved over a bit (or a lot).

If you are printing a part that is the full 230mm wide for example you also could get this error sporadically as the head comes within .2mm of hitting the switch while printing. So removing this test might be best.

 

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Hello,

I received an Ultiamker2 last week. The printer has printed 2 parts and is giving the same error.

How can I fix it?

If the firmware is the problem then I suggest Ultimaker should release a firmware update ASAP as this is unacceptable.

 

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It's fixed in 15.02.1 and newer. It's part of cura:

http://software.ultimaker.com/

Install cura 15.02.1, make sure you select ultimaker2 for your "machine", connect a USB cable between your printer and your computer and then go to "machine" "install default firmware". Again, when you click "machine" make sure the correct printer type is chosen.

 

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I had the same issues just after converting Z-axis stepper motor from 1/8th step to 1/16th steps. In fact this is a SOFTWARE problem into the firmware.

In order to solve this, I have checked my Z HOME offset (M206 command in pronterface) and it was tooooo huge ! So the printer did not know where was the Z when trying to home and defined so that the endstop was stuck or broken.

The procedure I did was to reset the Z home offset (M206 Z0) followed by a EEPROM save (M500). Then I have done the buildplate procedure and everything went fine.

Is your problem solved this way ?

Regards,

Aurelien

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