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The printer can fully recover from a complete loss of power without the need for batteries or a UPS. A special sensor detects mains voltage, and in case of an interruption, it immediately shuts down the heatbed and extruder heating, leaving enough power in the capacitors to store the position and lift the print head away from the print. In case of a very short power failure, the printer will attempt to continue printing immediately without waiting for user interaction.
When the power comes back, the printer will give you an option to continue the print. Keep in mind that during extended periods without power, the bed will cool down and the printed object can detach itself from the sheet plate. So, before resuming the process, check the following:
The power panic connection is between the power supply and mainboard. With the printer fully cooled down, switched off, and disconnected from the mains, access the PSU or mainboard sides.
Note: on CORE One, MK4/S, MK3.9/S, and MK3.5/S, there are two versions of the power panic cable, one with only a black wire and one with black and white wires. Both are compatible with these printer models, and there is no need to switch to one or the other. This note does not apply to CORE One L and MK3/S/+.
On CORE One L, access the electronics, to locate the power panic cable in the bundle of PSU power cables.
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| xBuddy (CORE One, MK4/S, MK3.9/S, MK3.5/S) | PSU (CORE One, MK4/S, MK3.9/S, MK3.5/S) |
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| CORE One L | CORE One L PSU power cables bundle. Power panic is white and black. |
21 comments
I cannot find any settings for disabling power outage recovery. I don’t trust it to make the right decision (do not continue) when the power comes back online after an hour long outage.