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Old Mar 22, 2011, 03:56 AM
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Originally Posted by xandrios View Post
To anyone interested, I Have included the full pinout for the 1300w DL580 G3 PSU that started this thread. I found it on the internet and hope that it's correct. Important!! Pin A1 starts at the bottom left in this pin matrix. Hopefully this will spark a firestorm of new mods.
Where did you find this ?
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Old Mar 22, 2011, 04:43 AM
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Originally Posted by KiloOne View Post
Make a plastic washer to go under the head of the two screws and put them back into the enlarged pcb holes (better yet use some 'hat' shaped isolating washers).
I think I will use nylon bolts for my mod. Will a plastic washer underneath the PCB at the screw area be enough, or is there really a need to isolate along the whole PCB edge?

Next question is whether to let both units float or not?

Fred
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Old Mar 22, 2011, 08:05 AM
Steven
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Full Pinout for these pin compatible Power Supplies.

Astec/Emerson DS450-3/DS550-3, Sun Fire X4100/X4100 M2, X4200/X4200 M2, Dell Poweredge 1850, 2800, 2850, 2950, AA23290, AA23300, 7000814-0000, NPS700AB, N750P-S0, AHF-650-12-Y Full Pinout Assignment.

Astec manufactures the DS450-3/DS550-3.
The Sun Fire X4100/X4100 M2, X4200/X4200 M2 servers use the DS550-3 PSU.
The Dell 1850 AA23300 PSU is really a DS550-3 in disguise.

Dell 1850 AA23300 PSU and Astec DS550-3 voltage control modification 12V-14.2V.

http://www.rcgroups.com/forums/showp...postcount=1592

Connect PS On and PS Kill to ground to power up.

Pin B2 may be the analog fan control voltage input or may be left spare.
Connecting B2 to ground may slow fan speed and/or connecting to 3.3v may increase fan speed.

The accompanying Pinout from the Sun Fire™ X4100/X4100 M2 and X4200/X4200 M2 Servers Service Manual is for verification purposes.
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Old Mar 23, 2011, 12:38 PM
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"This is a simple way to measure the current draw from a DL580 G3 PSU. The voltage output is directly proportional to the current where 1v = 10 amps. So when your pulling 100 amps out of this supply you will get a reading of 10v. It comes in handy when you don't have a large external shunt resistor on hand. Original pic by jj604."

??? I measure 2.17V on this pin with no load ???

Xandrios. Have you figured out which pin was giving you 1V for each 10A yet?
Thank you. Bob.
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Old Mar 23, 2011, 01:49 PM
Steven
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Sorry Bob. The pin I was using only became accurate after 35-40 amps draw. Only then did 1v = 10A. So its only good from 35a-100a. I didn't test below 35a. An oversight on my part.
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Old Mar 23, 2011, 04:08 PM
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Xandrios. Thank you for the reply. I will try the higher currents.
Bob
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Old Mar 23, 2011, 11:17 PM
Dale
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Fred,

I had the board completely removed when I decided to isolate both edges of the board. There must have been a reason. Take the board out and look for yourself, sorry I can't do that right now.

Dale
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Old Mar 27, 2011, 11:49 AM
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Quote:
Originally Posted by xandrios View Post
For anyone interested this should be the pinout for the Poweredge 2800 and 2850 series PS units. The ps-kill and pson match up. As do all ground and +3v pins. This is a compatible model PSU.
Thank You so much for that !

Lets see what we can do with all this

Strange is, that my way to turn it on works via D6 and C5
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Old Mar 27, 2011, 05:32 PM
Steven
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Pinout

Quote:
Originally Posted by outlawrc View Post

Strange is, that my way to turn it on works via D6 and C5

Outlawrc. I think your talking about the Poweredge 2600 series PSU which uses the D6 and C5 pins. Both the 2800 and 2850 use the A1, B6 and Ground.
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Old Mar 27, 2011, 08:25 PM
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Originally Posted by xandrios View Post
Shorting to ground will achieve the lowest speed possible. The second 1k or R2 is between red and ground. You can adjust the value of the second 1k to meet your needs. Making it less than 1k will make it speed up less to somewhere between med and max. Just give it enough to cool the PSU down...
Does anyone have a photo of the finished product? I would like to see how the resistors have been hooked up
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Old Mar 28, 2011, 05:55 AM
Steven
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Outlawrc. Just saw your question about where I found the DL580 G3 psu pinout. Sun Microsystems used a compatible PSU in several of their systems. Check out the Sun Storage 7210 Unified Storage pdf or the Sun Virtual Tape Library pdf online. A couple other systems also used the same PSU. They even have a 1500w variant.
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Old Mar 28, 2011, 08:43 AM
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Xandrios, sorry for mixing up 2600 and 2800...
I will have a look to Sun *RIP*
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Old Mar 28, 2011, 09:09 AM
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HP 1300W Proliant ML570 DL580

For those who may have an interest to my original post 2 pages back on getting the fan speed reduced to human levels, I bring to you this follow up with performance results and hard data. Yay data!

Short 10Awg wire this time to eliminate my weak link of smoking wires. Only ran max rated 900W @ 120V this time as well for first duration test. Hottest points on indicated areas recorded. Temps were actually cooler than antisipated as I expected a more prominant runaway over time. Again pleasantly surprised

----Fans Modified with 2W 10Ohm Resistors - Temps in F*

---500W@15min---900W@5min---10min----15min----20min

Case-----90.7*---------96.4*--------101.1*----101.2*----100.8*

Exhaust-110.4*--------118.9*--------121.6*----123.6*----125.4*

Wires---110.4*--------169.7*--------183.4*----189.5*----189.1*

Worth noting is exhaust temps were on average 5-10*Deg cooler on average, peaks seemed to be seen on large red coil near center rear which were recorded.


Also out of intrest i loaded a well reviewed Db levelmeter app for my iphone to put in numbers the sound level changes.

Sound Levels in Db
Static Room - 53
Bath Room Fan @ 10" - 73
-----------------Modified fan------Stock Standby------Stock Full
10" to side------------64----------------75----------------79
10" from intake--------73----------------81----------------86
10" from exhaust------70----------------76----------------84

Numbers denote a dramatic improvement yes, but personally feel they don't do the reality of the human factor being surrounded by such noise pollution justice.

Anywho, just thought I'd share again my findings to follow up my previous posts.

Darren
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Old Mar 28, 2011, 05:05 PM
Steven
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Nice job with those temperature readings Frank. In a worse case scenario, the supply would probably shut down due to thermal overload.

The daughterboard to the right of that large red coil houses four 20N60C3 mosfets (TO-3P package). This seems to be the only part of this supply that gets warm.

This supply uses the ADM1041A IC. Its a Secondary-Side Controller with Current Share and Housekeeping. Basically it controls all the output current and voltage parameters. It sits underneath the two internal fans. The OVP and UVP threshold settings are digitally programmable through registers via the SMBus at register addresses 0Ah and 09h. Pin 20 (Vs+) is part of the differential remote sense amplifier. It connects externally to pin C5 which is why we are able to control the voltage settings.
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Old Mar 29, 2011, 09:13 AM
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Thanks xandros. Yes i saw that bank of mosfets guess they heat soak that half. Speaking of on my initial rigging intended for 24V series using only half the output blades, I did note the linked mosfets kicked out a fair bit more heat as they handled all the work. No data, just observation since utilizing all output blades as design intended unit seemed to be happier.

Lots of good info there, almost cresting my comprehension, after all I do have corks in my neck. so I assume that secondary side controller board is the one that fries itself, judging by the view window under the unit?
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