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no Z movement

Posted by pgringo 
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pgringo
no Z movement
March 02, 2017 03:29PM
ramps 1.4 with genuine arduino.

i adjusted stepper driver voltage to 0.95

everything was working except z gauge was 50% of what it should be.

I turned the machine off, left, came back to it the next day, and now z axis will not move. I get screaming from the motors, but no movement.
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pgringo
Re: no Z movement
March 02, 2017 04:21PM
well, messing with things, i get movement when telling it to move 0.1mm at a time either up or down, but still no movement in 1mm or 10mm in either direction
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obewan
Re: no Z movement
March 02, 2017 06:02PM
have you installed the 3 jumpers under the stepper driver pcb's, to set 1/16 microstepping.
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SteveRoy
Re: no Z movement
March 02, 2017 06:36PM
Check your DEFAULT_MAX_FEEDRATE in the Marlin Configuration.h
the default of 5 is too high

#define DEFAULT_MAX_FEEDRATE {500, 500, 2, 25} // (mm/sec)
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pgringo
Re: no Z movement
March 02, 2017 06:42PM
fixed.

replaced stepper driver. adjusted voltage. reflashed. working.
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