Hello all,
I have been researching this for quite some time, and I received quite a few answers on various communities, however there were conflicting answers which went head to head, therefore I thought maybe I should ask true experts.
I have a few 3D printers with motherboards using 24V from AC/DC PSUs. The printhead requires more cooling (part cooling fan), and I want to use a 40x28mm 12V powerful fan, such as the Delta PFB0412EN-E, or Sanyo Denki 9GAX0412P3S001, or even the Sanyo Denki 9HVA0412P3J001 (I own all of them). Any of these fans are PWM controlled (4-wire fans), and the Tacho and PWM wires need to be connected to the motherboard (or a toolboard) in order to be controlled. Unfortunately, the boards are all 24V and even though they do have 12V output ports, those are not rated to the power consumed by those fans (for example, the Duet 1LC Toolboard supports maximum 800mA on its 12V port).
I also have a DC/DC Mean Well PSU (24V to 12V, 6.5A), as well as another AC/DC Mean Well PSU (outputs 12V, 7.1A).
My question revolves around how to power the fan in such a way to avoid issues. 12V and ground wires would come from any of the two above PSUs, and PWM and Tacho wires are connected to the 24V board, but I'm worried about whether this would work well or is there something else I need to do? I was told I should connect the 24V PSU ground with the 12V PSU ground in order to avoid issues. Would that be enough?
Please let me know if you need further information, I'd be happy to provide it.
Thank you!
I have been researching this for quite some time, and I received quite a few answers on various communities, however there were conflicting answers which went head to head, therefore I thought maybe I should ask true experts.
I have a few 3D printers with motherboards using 24V from AC/DC PSUs. The printhead requires more cooling (part cooling fan), and I want to use a 40x28mm 12V powerful fan, such as the Delta PFB0412EN-E, or Sanyo Denki 9GAX0412P3S001, or even the Sanyo Denki 9HVA0412P3J001 (I own all of them). Any of these fans are PWM controlled (4-wire fans), and the Tacho and PWM wires need to be connected to the motherboard (or a toolboard) in order to be controlled. Unfortunately, the boards are all 24V and even though they do have 12V output ports, those are not rated to the power consumed by those fans (for example, the Duet 1LC Toolboard supports maximum 800mA on its 12V port).
I also have a DC/DC Mean Well PSU (24V to 12V, 6.5A), as well as another AC/DC Mean Well PSU (outputs 12V, 7.1A).
My question revolves around how to power the fan in such a way to avoid issues. 12V and ground wires would come from any of the two above PSUs, and PWM and Tacho wires are connected to the 24V board, but I'm worried about whether this would work well or is there something else I need to do? I was told I should connect the 24V PSU ground with the 12V PSU ground in order to avoid issues. Would that be enough?
Please let me know if you need further information, I'd be happy to provide it.
Thank you!