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Z axies only go down

Posted by ddock

ddock

Z axies only go down
November 28, 2013 09:07PM

Registered: 10 years ago
Posts: 7

I just bough a prusa i3 on the internet. however the Z axies only go down and seen reversed. that means if I click up on Z control in Repertier host. the extruder will go down until it crash to print plate . I try to email to theseller but the seller never response so I try to get some help here. I am using sanguinolo ( dont know which version is it ) and marlin firmware .

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uncle_bob

Re: Z axies only go down
November 28, 2013 09:47PM

Registered: 10 years ago
Posts: 1,433

The easy way to reverse a motor is to simply flip the connector that attaches the motor to the board by 180 degrees. Do not do it with power applied to the system (no +12, no USB, no power at all).

One way motion might mean a Z limit switch set up wrong. You may have wired it as normally closed when it should be normally open (or open instead of closed). I'd double check the instructions that came with the kit.

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mekmekmek

Re: Z axies only go down
December 04, 2013 01:31PM

Registered: 10 years ago
Posts: 50

had the same issue.
when make your firmware update you need to configure the Configuration.h file there should be a part like this:

// Inverting axis direction
const bool INVERT_X_DIR = true;
const bool INVERT_Y_DIR = false;
const bool INVERT_Z_DIR = false;
const bool INVERT_E_DIR = true;

so you can just invert movment esay.