Owing to a failed psu I am looking to possibly install a 60w tube and PSU into my k40 cabinet, obviously the cabinet will need to be modified to accept the tube but I would like to hear from anybody that had already made this modification.
I would like to know what psu you have used?
Is it possible to run a 60w psu with a 40w tube rather than throwing it in the bin?
Is there a significant difference in having the extra 20w to warrant the extra effort/outlay.
Cheers Phillip, I’m wired up for a single psu at the moment but this might be the way to go. As the low voltage side of my psu is still working ok I guess I could continue to use that to power the steppers and C3D.
you could but as it is only rated for 1 amp of output your better off getting an external 24v 3-5Amp psu to run your steppers and controller board. Takes up less space also
@Phillip_Conroy do you have the display for your LPS working? If I upgrade I like that supply as well, although we do not have any schems for it. Have you by any chance asked the vendor for them?
@Andy_Shilling I think I would go for at least 10A on the 24V if you can afford it :). Also before you finalize your LPS you should pick and get the specs for the laser you intend on using.
@donkjr I was looking at the cloudray HYT60 until Phillip put his 2 pence worth in. I like the idea of the z80 of it really does monitor what it says but being an aliexpress description I’m not so sure. @Phillip_Conroy we need a full review on this please
@donkjr So after waiting for what seems forever I have received my new LPS. I went for the MYJG-60W and I’m now rewiring the machine but I wondered if you have a diagram for the wiring? I’m a little confused as what terminals what and don’t want to wreck it before I start.The only diagram I can find is the one below so any help would be great.
@Andy_Shilling I am not sure how you were setupd before i.e. running a smoothie, C3D or Nano.
This picture shows how a Nano is connected with an external supply with a LPS of this type.
Hope this helps, let me know if you have any problems with this setup.
For a smoothie style board replace the Nano below with the smoothie wiring you had. The only difference should be that the PWM should connect to TL on the LPS vs L on the old standard supply. I assume your smoothie wiring will be:
To Smoothie:
VBB = 24V from external supply
GND= single point connected to 24V supply gnd
From Smoothie to LPS:
PWM= from an open drain on smoothie to TL on LPS.(this assumes you were not using a level shifter and connected to IN).
Smoothie gnd: from smoothie board gnd to LPS gnd
Safety and noise wiring suggestions:
Make sure all supplies have grounds from their source running directly to the destination ground them all to a single point at the supply. Do not daisy chain gnds from one destination to another.
Make sure the LPS has FG tied to the frame and that all supplies safety gnd is also tied to the frame. Test with DVM.
@donkjr Thank you very much good sir, I have been outside cutting, measuring and wiring making the case ready for when this tube goes and I upgrade to the 60w tube. I will sort out this final wiring later and hope I’ve got everything in place that I need.
@donkjr I’m pretty much finished with the wiring but I just want to check that I must ground the C3D to the LPS and not the seperate 24v supply I have?
