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Qidi Plus4 Dual Solid State Relay Bracket — image 1
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Qidi Plus4 Dual Solid State Relay Bracket

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Added support for a second SSR

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Wanted a second relay to use with an AC heated bed conversion I was doing to the Qidi Plus4

 

Consult an electrician for wiring if you're not sure how to do it. 

Stock chamber heater to relay conversion:

  • Red wires on the stock relay are Live so you attach those to the AC outputs of the SSR
  • Blue heater wire goes to the black wire. WAGO's are great options. Both are neutral (heater is non polar, just how qidi had it)
  • yellow is ground to earth, attach to the metal heatsink screws. 
  • cut the white wire (I believe) with a JST on each end and terminate with ring or spade terminals to the + and - side of the relay
    • POLARITY IS IMPORTANT HERE. 

 

BOM:

  • Used These Heatsinks
    • make sure to use the thermal paste and apply it on the metal bottom part of the relay
    • m4 hardware to mount relay to heatsink
  • Used fan mount from original post, but re-uploaded it here
  • LDO 3X2 Splicer Board
  • 12X (Voron spec brass M3 heatset inserts M3X5X4)
    • 4X Mandatory, M4X8 can cut threads in the plastic
  • 8X M3X8 Screws for heatsink, PCB, and fan mount mounting
  • 4X M3X14 Screws for fan to fan mount
  • 24V 4010 Axial Fan (if you did the 80mm mainboard fan upgrade, you can reuse the original fan here) 
  • 2 M3 Screws reused from the stock plus4 relay housing to mount it to the plastic panel

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