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Heat bed can not be fully used #23

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michinator opened this issue Feb 11, 2019 · 5 comments
Closed

Heat bed can not be fully used #23

michinator opened this issue Feb 11, 2019 · 5 comments
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bug The firmware is not working properly

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@michinator
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Hello,

no idea if it is a bug. After switching from Marlin 1.1.0 to 190208-TMC2208, the heating bed max can only be heated up to 105 ° C.

The PID tuning is unfortunately not possible at 110°. The error message: "PID Autotune failed! Temperature too high" is displayed in the octo print terminal.

Otherwise, the new pid function works great. There are two mosfets installed in the i3 mega v3. I hope you can help me, because I print mostly abs at 110 °.

here are the calculated optimized values from the bed

Recv: #define DEFAULT_bedKp 241.85
Recv: #define DEFAULT_bedKi 47.62
Recv: #define DEFAULT_bedKd 307.09

Thanks in advance
@michinator michinator added the bug The firmware is not working properly label Feb 11, 2019
@davidramiro
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Confirmed. Since the latest merge of Marlin's official repo (f01ee75) heating only goes up to MAXTEMP minus 15°C. I'll adjust them later today.

@michinator
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👍

davidramiro added a commit that referenced this issue Feb 11, 2019
@davidramiro
Adjust temperature limits and margins
28e86b9 
Lowering the safety margin of MAXTEMP to 10°C and raising MAXTEMP to 285/135.

Resulting in a limit of 275°C for the hotend and 125°C for the heatbed.

Referencing #23
@davidramiro
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Done, check the newest release. New maximum temps are 275°C and 125°C.

@michinator
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try it now
great support :)

@michinator
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it works.
Thanks again

@MNieddu91 MNieddu91 mentioned this issue Feb 11, 2019
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@davidramiro @michinator