Industrial Power Supply?

3dmntbighker

@danal I have a 24v bed so I prefer a 500 watt supply.

JoergS5

@danal I bought the LRS-350-24 and wonder what the difference to yours NES-350-24 is? Your is 50% more expensive, but I cannot find other differences. Ok, your is a bit higher than mine (50 vs 30 mm).
Please don't waste time if you don't know it, it is only if you happen to know.

denke

I'd make sure that it's galvanicly isolated, and you're probably good to go

I've seen some very high efficiency (98% i think) industrial LED (constant current) PSUs which sent out constant ~400v dc from the "+" connector, and varied the voltage of the "-" connector to acheive the pre-set constant current. This method probably has a name but I'm not versed enough in the subject, and it's probably not the case with your psu, just be careful with "unknown" industrial ones!

dc42

@3dmntbighker said in Industrial Power Supply?:

@dc42 I don't think it has a fan due to the efficiency. Time will tell.

If it's 92% efficient at 500W output, then it has to get rid of 40W of heat. It will definitely have a fan.

mrehorstdmd

I have an industrial MeanWell supply in one of my printers (that machine is at the makerspace due to noise level), same situation- 24V 450W bed heater. It was a big mistake. The cooling fan in the supply is just short of a vacuum cleaner in noise level. The money I spent on the power supply could have paid for a line powered heater and a quiet power supply.

I'm going to replace the heater with a line powered unit, and use a MeanWell LRS-200-24 supply instead (no fan!). I've put those supplies in 3 printers and they are great!

deckingman

@mrehorstdmd said in Industrial Power Supply?:

...............................
I'm going to replace the heater with a line powered unit, and use a MeanWell LRS-200-24 supply instead (no fan!). I've put those supplies in 3 printers and they are great!

That's what I have - mains powered bed heater and fanless PSU. That's the trouble with the Duet boards - the motors are so quiet that other sources of noise start to become intrusive

Barracuda72

Anyone else have low to no-noise 24V PSU? Im thinking to change my setup from 12V ( 450W server PSU) to 24V. Bed is already on main power...so i guess 120-150W would be enough. Read tons of PSU descriptions but theres nothing about noise level in it.

mrehorstdmd

@barracuda72

The MeanWell LRS-200-24 is good for 8.8 A @ 24V and has no fan, so there's no noise. They are available from multiple sources, usually for <$30 in the US. Here's one: https://www.onlinecomponents.com/mean-well/lrs20024-47466825.html?ref=adwordsfeed&msclkid=3699defc8739188aafb885beb51a3f54&utm_source=bing&utm_medium=cpc&utm_campaign=sl&gt%3B&gt%3Bpower+supplies&gt%3B&gt%3Bsku&gt%3B&gt%3Bmean+well&gt%3B&gt%3Bpower+supplies&gt%3B&gt%3Blrs-200-24&utm_term=lrs-200-24&utm_content=sku

That's cheaper than a lot of the no spec/no cert "LED" power supplies from China, and it comes with a warranty.

deckingman

@barracuda72 said in Industrial Power Supply?:

Anyone else have low to no-noise 24V PSU? Im thinking to change my setup from 12V ( 450W server PSU) to 24V. Bed is already on main power...so i guess 120-150W would be enough. Read tons of PSU descriptions but theres nothing about noise level in it.

If you are in the UK, there is this one http://ooznest.co.uk/3D-Printer-Electronic-Parts/Power-Supplies/24V-200W-Power-Supply. Cheap as chips but it's being doing me proud for the last 18 months or so.

3dmntbighker

So my XCSF500C arrived this morning. I have to figure out how to mount it, but as I suspected, it has NO fan. It's made in Italy and not a no name LED supply. It says maintain 2 inches above and below and there is no mention of forced air cooling in the spec sheet. I plan to cool it and the Duet with a large slow turning fan. It has every kind of protection imaginable including over temp. Now the E3D V6 fan is the loudest thing on the printer.

edit: I wanted to make the point that the spec sheet says to de-rate the supply 25% if mounted horizontally. And leave 2 inches of air space above and below, and half an inch either side. This clearly indicates this thing is made to rely on convection alone to keep it's cool. Nice

3dmntbighker

@dc42 said in Industrial Power Supply?:

@3dmntbighker said in Industrial Power Supply?:

@dc42 I don't think it has a fan due to the efficiency. Time will tell.

If it's 92% efficient at 500W output, then it has to get rid of 40W of heat. It will definitely have a fan.

Nope

3dmntbighker

Wow, my $116.00 awesome power supply is back in stock on Amazon.

For $436.00!!!

--Yikes