MKS_UPS

How to buy

• MKS UPS on Aliexpress MKS UPS

Video Tutorials

• If display screen is LCD12864. It can be referred to LCD12864 UPS

• If display screen is MKS TFT35. It can be referred to MKS TFT35 UPS

Notice

• MKS UPS12V can only be used for DC12V power, MKS UPS24V can only be used for DC24V power.

Working process

• When AC power supply is cut off, the MKS UPS detects it and send signal to motherboard;
• The power stored in the MKS UPS and PSU continues to supply power to the motherboard;
• Motherboard detects the power-off signal, stop printing, turn off hotbed and hotend, lift z axis;
• The power stored in MKS UPS is generally lift z axis 20mm-200mm;
• When power supply is restored, resume printing through LCD/TFT screen.

Wiring:

Firmware setting

• Configuration_adv.h：
  • Enable #define POWER_LOSS_RECOVERY
  • Set #define PLR_ENABLED_DEFAULT true
  • Enable #define BACKUP_POWER_SUPPLY
  • Set #define POWER_LOSS_ZRAISE 20 //mm,can change up to 200
  • Set #define POWER_LOSS_PIN PB10
  • Set #define POWER_LOSS_STATE HIGH

How to use

• Work with MKS TFT35

  • Parameter setting and Usage method
    • Settings -> Config -> Machine -> Position settings -> Z-axis pause position(relative position) = POWER_LOSS_ZRAISE (Configuration_adv.h file)
    • Settings -> Config -> Advance -> power off dection module select UPS

• Work with LCD12864

  • Usage method
    • The external power is cut off directly, the Z axis is improved
    • Power on again, LCD screen choose to resume printing