Prusa i3 MK2S KIT

To Next Page

To Previous Page

This is a safety check to avoid the nozzle to crash into the print bed if the PINDA

sensor stops working or something goes wrong with the printer mechanics (for

example, a pulley slips). This safety check may be triggered as well, if the printer has

been moved to an uneven surface. Before doing anything else, make the Z axis level

by going all the way up and try again.

At the end of the X/Y calibration, the printer measures the reference height above

each of the 9 bed sensor points and stores the reference heights into a non-volatile

memory. During the normal bed leveling, it is expected that the PINDA probe triggers

not further than 1 mm from the reference value, therefore the nozzle is not allowed to

move more than 1 mm below the reference value during the bed calibration.

If you moved the printer, you may need to re-run the Z calibration to sample new

reference Z height values reflecting the twist and bend of the table surface the printer

is sitting on. If that does not help, please verify, that the PINDA probe is aligned with

the sensor points on the print bed during the bed Z calibration. The alignment shall

be ensured by the automatic X/Y calibration routine. If the PINDA probe is no more

aligned during the Z calibration over time, it is possible, that a pulley is slipping or

something on the machine frame got loose.

3) Bed



leveling



failed.



Sensor



triggered



too



high.



Waiting



for



reset.

Similar to case 2). This time the PINDA sensor triggered more than 1 mm above the

reference height. Before doing anything else, make the Z axis level by going all the

way up and try again.



 

Prusa i3 MK2S KIT - Page 18