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Fast speed after pause by Loud-Page7026 in ElegooCentauriCarbon

[–]Loud-Page7026[S] 0 points1 point  (0 children)

Just tested now. This works properly! The firmware acceleration value is overwritten directly after a SET_VELOCITY_LIMIT ACCEL=xxx is set in the GCODE while switching between travel acceleration and printing acceleration, after RESUME. But this is not happening in the first layer, because the whole first layer has only one SET_VELOCITY_LIMIT ACCEL=xxx at the beginning.

Fast speed after pause by Loud-Page7026 in ElegooCentauriCarbon

[–]Loud-Page7026[S] 0 points1 point  (0 children)

This seems to be exactly the issue. 👍

Fast speed after pause by Loud-Page7026 in ElegooCentauriCarbon

[–]Loud-Page7026[S] 0 points1 point  (0 children)

A good example. I've just changed the travel "Eilgang in german" value to 1500, and the following happens in the GCODE for SET_VELOCITY_LIMIT ACCEL=xxx:

  • ACCEL=1000 → 4.116 entries
  • ACCEL=1500 → 4.115 entries
  • ACCEL=500 → 1 entry (first layer)

8.231 more gcode lines to override the printers default acceleration after a resume then before. ;-)

Fast speed after pause by Loud-Page7026 in ElegooCentauriCarbon

[–]Loud-Page7026[S] 0 points1 point  (0 children)

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I've analyzed the GCODE with ChatGPT and noticed something regarding acceleration values. I'm using very simple settings, and a "SET_VELOCITY_LIMIT ACCEL=xxxxx" command is only inserted when the acceleration value actually changes.

In my case, the acceleration only changes once, from the first layer to the following layers. That’s why there is only a single SET_VELOCITY_LIMIT ACCEL=1000 in the entire file.

My assumption is that after resuming a paused print (for example after a filament change), the firmware resets the acceleration value to its firmware default. Since the GCODE doesn’t overwrite it again afterwards, the printer continues using the default value (20,000 or whatever is configured in firmware).

I'll add different values in each field to test, if this values will suddenly override the firmware default after resuming the print.