Hello,

I run a rumba board in my 3D printer. The heating bed is to be operated via a solid state relay ("bang-bang" setting).

HB-OUT is connected to the relay input. The heating bed is operated externally via mains voltage.

Do I still have to connect the 24V power supply with HB-PWR?

Attachment: This is my current cabling.

Edited 2 time(s). Last edit at 04/04/2018 02:05PM by Tomsand.

I have now also connected the input HB-PWR to the 24V power supply. The relay now switches perfectly, and the heating bed now also functions perfectly.