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SKR v1.4 turbo 2209 uart issue with dual z on one driver stalling motors

Posted by protom

protom

SKR v1.4 turbo 2209 uart issue with dual z on one driver stalling motors
May 14, 2021 05:40PM

Registered: 2 years ago
Posts: 2

my z motors are plugged on the z ports ( in parallel driven by a single 2209 ) I have no issue if I set the steps/mm at 700 for z but then its not moving the distance it should. when I put the correct steps/min which is 2544 the motors stall ( they will move if I move .01 or 1mm but stall if I move 10mm. any idea how to solve the issue ?

here. is a video of the issue dual z stalling

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dc42

Re: SKR v1.4 turbo 2209 uart issue with dual z on one driver stalling motors
May 15, 2021 02:25AM

Registered: 10 years ago
Posts: 14,672

Reduce the configured maximum Z acceleration and Z speed.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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protom

Re: SKR v1.4 turbo 2209 uart issue with dual z on one driver stalling motors
May 15, 2021 07:33PM

Registered: 2 years ago
Posts: 2

to what speed ?
this is my current setting
DEFAULT_MAX_ACCELERATION { 3000, 3000, 100, 10000 }