Bought this power supply to run a table and a cylindrical is there a YouTube tutorial on how to change the power supply in the K40
What PS? Have a picture? Info?
OK, when you say you replaced it are you meaning your using it for a Z axis table? I’m not well versed in using that for the rotary hooked up to the control. That said, do you have an aftermarket controller such as Cohesion3D? I know that can be done with the C3D.
I do have a z axis table hooked up and using the same or similar power supply to power it but I’m just running it in a manual up and down push button mode until I have time to convert it over to my C3D.
This may be getting beyond me to help or even comment. I’m a little concerned as messing with the K40 PS is very dangerous as it has very high CAN KILL voltages coming out of it to driving the laser tube.
@Steve_Clark I do have a C3D board haven’t installed it yet but Ray suggested that the old ps would be inadequate to power both Z and rotary
@William_Kearns I am guessing that you only want to replace the 24vdc portion of the LPS, leaving it in place for the Laser HV???
@donkjr Yes that is what I want to achieve
I’m interested in this also…
@Steve_Clark I think this is the answer the 24volts needs to be supplied from another source
@William_Kearns the stock LASER POWER only provides 24V @ 1 amp so another stepper (Z or rotary) cannot be added to it. Most add a 24VDC supply and run everything on it as I think the diagram above intends. Where did the above diagram come from?
The 5V needed for the adapter enable lines could come from the 5V on the LPS or 5v on the C3D board if that is indeed 5V?
Make sure that the 24v and its associated ground are run from the supply to each load, do not daisy chain. One ground to frame at the supply.
Check in with @raykholo …
Already had this chat yesterday, thoroughly lectured on “ways to blow the lpsu”, and yes we have a wiring diagram.
@raykholo ok, just trying to help…
Yes, please continue helping! Just telling you what we already did.


