Hello.
I wanted to share a modification to the Atomstack F60 pump/air assist to fit my Sculpfun S30 Ultra laser.
The modification can also fit other lasers - need to just verify type of it control system, also this 12V ones.
In addition introduces the function of the automatic low - high state (low - weak blast in the absence of air assist from the Lightburn and high (full power) - at the command from the Lightburn).
LOW state can be adjusted by factory adjustment knob.
The F60 pump I ordered, as it turned out, was factory-supplied for use with an external power supply for 12V.
Modifications applied:
adjustable DC 24V to 12V 5A step-down converter
24V DC relay (41.31.9.024.0010) to activate full capacity state
The control board in the pump can handle a 24/12V mix, but if we put 24V on the input, it also gives 24V on the output to internal components, and these are factory-rated for 12V, so it is not originally compatible with 24V.
I have prepared a diagram of modifications to the standard installation and to the Sculpfun laser (it has a different control - via ground to the pump).
Standard diagram (need to checked vs each solution):
I hope this can help especially with LOW state on engraving for maintain laser lens clean.
There is option of skip DC converter if your power supply is 12V and achieve LOW-HIGH state function with 12V relay installed.
I have 3d - printed same solution before as you use, but it was a bit difficult for me in long run to always make engrave then remember to release valve and start cutting.
With this solution it’s fully automatic.
I was struggling myself a longer while with set up help for engraving.
I have even manage to adjust nozzle on laser by using 2 sealing rings in row, which help with standard pump achieving better cutting but lens was always a bit dirty after each engraving.
Anyhow if you are planing on iCube, I can check some time later how it looks with power supply on my iCube motherboard also.
just looked at the price for one. Maybe I will do another plan.
I am pretty sure the SF-A9 pump uses a lower pump voltage (always on, maybe 8-9 volts) because it is only 2 wires, so I may investigate that. Assist air energizes a relay that applies full voltage to the pump. Relay bypasses a step-down voltage regulator and applies a full +12vcd to the pump.
I have been considering this for a while, but in the Too-Much-To-Do mode right now.
I have been thinking a bit, there is a way that you can get state LOW / HIGH on standard pump (without) RPM regulation - which is cheaper.
General solution:
If we are taking into account actual pump from laser or with similar parameters it will work, it’s just we add functionality low/high to the existing system.
