HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jul 16, 2012, 07:32 PM
Lipo Power
BrushlesHeaven's Avatar
Joined May 2009
299 Posts
That is right, I am back to nowhere....


Quote:
Originally Posted by amped aus View Post
How do you get this to work ive connected A1, B1, B6 but the orange warning light comes up and doesn't fully power on.
BrushlesHeaven is offline Find More Posts by BrushlesHeaven
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 16, 2012, 09:28 PM
Lipo Power
BrushlesHeaven's Avatar
Joined May 2009
299 Posts
Still reading and no power on stay on.....
BrushlesHeaven is offline Find More Posts by BrushlesHeaven
Reply With Quote
Old Jul 17, 2012, 12:40 PM
Steven
xandrios's Avatar
United States, CT, East Hartford
Joined May 2010
504 Posts
Quote:
Originally Posted by BrushlesHeaven View Post
Still reading and no power on stay on.....
Have you tried loading the PSU within the 10 second window?
xandrios is offline Find More Posts by xandrios
Last edited by xandrios; Jul 17, 2012 at 01:03 PM.
Reply With Quote
Old Jul 17, 2012, 06:59 PM
Lipo Power
BrushlesHeaven's Avatar
Joined May 2009
299 Posts
Yes I did. After power on I got 10Amp charger starting and the PS will stop with yellow/orange caution light... Damn such a great looking and powerfull power supply...
Not sure what to do??? Parts maybe....

Quote:
Originally Posted by xandrios View Post
Have you tried loading the PSU within the 10 second window?
BrushlesHeaven is offline Find More Posts by BrushlesHeaven
Reply With Quote
Old Jul 17, 2012, 08:01 PM
Steven
xandrios's Avatar
United States, CT, East Hartford
Joined May 2010
504 Posts
Dell Poweredge 6650 PSU (ASTN 7000245) OVP disable modification to 16.5V

Dell Poweredge 6650 (ASTN 7000245) PSU voltage control OVP mod to 16.5V.

Stock OVP(over voltage protection) for the 6650 PSU is around 13.3V.

This simple mod will raise the OVP to 16.5V.

Remove the 5 screws as indicated to remove the back panel.

Locate the leftmost connector on the daughterboard.

Add a 1k resistor in series with the Grey wire.

Voltage will now be adjustable from 3.3V-16.5V(OVP).

There is no UVP on this unit so voltage can be adjusted down to 3.3V at the full 72 amps of current.

I suggest staying below 15.6V as the output capacitors are rated at 16V.

Tested at 15.5v and 72A.

A higher value resistor can raise OVP to above 20V.

The output caps will need to be replaced if voltage goes above 16V !!

Two of these PSUs(at 15.5V) in series(31V) should max out any charger available and will max out most 120V outlets at full power !!

http://www.revolectrix.com/Calculators_main.htm

Do this mod at your own risk !!
xandrios is offline Find More Posts by xandrios
Last edited by xandrios; Oct 11, 2012 at 11:24 AM.
Reply With Quote
Old Jul 17, 2012, 08:15 PM
Steven
xandrios's Avatar
United States, CT, East Hartford
Joined May 2010
504 Posts
Will post Dell PE 6650 PSU adjustable 3V-15.5V 72A mod soon. (Look at prior post)
xandrios is offline Find More Posts by xandrios
Last edited by xandrios; Oct 04, 2012 at 07:20 PM.
Reply With Quote
Old Jul 17, 2012, 08:18 PM
Registered User
Ponytail Flyer's Avatar
United States, NC, Tobaccoville
Joined Mar 2006
87 Posts
Quote:
Originally Posted by xandrios View Post
I've managed a simple OVP mod for the Dell Poweredge 6650 (ASTN 7000245) PSU that will allow voltage adjustment up to 16V.

This PSU doesn't seem to have a UVP circuit.

The full adjustable voltage range after mod will be from 3V to 16V at 72A.

This will make a great bench PS with these specs.

I will post pics and details later today or tomorrow.
Hey xandrios, I've been running these PS's for a while now, thanks to you and everyone else on this thread. I would love to see your OVP mod. I'm running 2 in series @ 13.1v per unit. My chargers are good for 32v and would like to get close to that. Also, ive been running 2 very large caps to keep the PS's from shutting off when i plug the second charger in. Can i put some diods across the outputs to keep that from happening? Any suggestions would be greatly appreciated.

Thanks for your time
Nathan

Ops, you posted while i was typing.
Ponytail Flyer is offline Find More Posts by Ponytail Flyer
Last edited by Ponytail Flyer; Jul 17, 2012 at 08:22 PM. Reason: posted before i got done.
Reply With Quote
Old Jul 17, 2012, 08:25 PM
Steven
xandrios's Avatar
United States, CT, East Hartford
Joined May 2010
504 Posts
The PE 6650 PSU (with mod) should be less susceptible to shutting down when you plug the second charger in.
xandrios is offline Find More Posts by xandrios
Reply With Quote
Old Jul 17, 2012, 08:36 PM
Registered User
Ponytail Flyer's Avatar
United States, NC, Tobaccoville
Joined Mar 2006
87 Posts
Quote:
Originally Posted by xandrios View Post
The PE 6650 PSU (with mod) should be less susceptible to shutting down when you plug the second charger in.
Thanks, will give it a try tomorrow and let you know.
Ponytail Flyer is offline Find More Posts by Ponytail Flyer
Reply With Quote
Old Jul 17, 2012, 11:06 PM
Frankenstein recycled packs
rampman's Avatar
USA, AZ, Gilbert
Joined Jan 2006
8,757 Posts
Quote:
Originally Posted by xandrios View Post
The PE 6650 PSU (with mod) should be less susceptible to shutting down when you plug the second charger in.
Hey, I did not read every post but this rung a bell in my head.

I have other supplies that I converted that sometimes cut off when I plug in a charger. The fix was as simple as a 10 ohm 1/2 watt resistor between the binding post and the bananna connector that sticks into the binding post. This is the same resistor I use on my >5S lipo powered planes. I connect one end of the resistor through the hole in the binding post (too small to use it for anything else at the amps we are pulling) and tighten the nut down. The other end is just sticking out in front of the binding post. I plug in one side of my charger and touch the other lead to this leg of the resistor and then push it into the binding post female connector.

In my case my PL8 SNAPS loudly when first power up at 24V. 12V is OK. Sometimes the supplies will fault out and I have to wait 30 seconds until I hear the reset relays click inside and then try again. This has solved it every time and the charge through the resistor only takes a second...

Rick
rampman is online now Find More Posts by rampman
Reply With Quote
Old Jul 18, 2012, 01:43 AM
F3P, Slap, IMAC, Helis
Joined Jun 2007
286 Posts
Quote:
Originally Posted by xandrios View Post
Here ya go Bubba Gump for your ColdWatt 650w CWA2-0650-IT01 PSU.


http://www.rcgroups.com/forums/showp...&postcount=679
I got the one up and running and my second one will be here today to throw in series. You know anyway to up the voltage a liitle bit on these, i love how small these are are and light they are. Or you know you know good way to drop a third one to 10v to power my power lab 6 since the damn power labs wont take 36v. My dl580s just crapped out from running them on a non inverter genny.
Bubba Gump is online now Find More Posts by Bubba Gump
Reply With Quote
Old Jul 18, 2012, 07:34 AM
Steven
xandrios's Avatar
United States, CT, East Hartford
Joined May 2010
504 Posts
Quote:
Originally Posted by BrushlesHeaven View Post
Yes I did. After power on I got 10Amp charger starting and the PS will stop with yellow/orange caution light... Damn such a great looking and powerfull power supply...
Not sure what to do??? Parts maybe....
Hey BrushlesHeaven.

Those symptoms usually indicate a bad tach output from the fan..
Use an oscilloscope to check if the tach output is working.
If you don't have an oscilloscope, then just replace the existing fan.
xandrios is offline Find More Posts by xandrios
Last edited by xandrios; Jul 18, 2012 at 04:05 PM.
Reply With Quote
Old Jul 18, 2012, 07:51 AM
Steven
xandrios's Avatar
United States, CT, East Hartford
Joined May 2010
504 Posts
Quote:
Originally Posted by Bubba Gump View Post
I got the one up and running and my second one will be here today to throw in series. You know anyway to up the voltage a liitle bit on these, i love how small these are are and light they are. Or you know you know good way to drop a third one to 10v to power my power lab 6 since the damn power labs wont take 36v. My dl580s just crapped out from running them on a non inverter genny.

The DPS-650QB is pin compatible with your ColdWatt 650w CWA2-0650-IT01 PSU.

For a quick voltage boost connect the 12LS tab to the 5VSdBy tab.

To adjust voltage above 12V connect the +12VRS- tab to the 5VSdBy tab through a 5k or 10k potentiometer.

Let us know how high you can adjust the voltage.


xandrios is offline Find More Posts by xandrios
Reply With Quote
Old Jul 18, 2012, 08:05 AM
F3P, Slap, IMAC, Helis
Joined Jun 2007
286 Posts
Quote:
Originally Posted by xandrios View Post
The DPS-650QB is pin compatible with your ColdWatt 650w CWA2-0650-IT01 PSU.

For a quick voltage boost connect the 12LS tab to the 5VSdBy tab.

To adjust voltage above 12V connect the +12VRS- tab to the 5VSdBy tab through a 5k or 10k potentiometer.

Let us know how high you can adjust the voltage.


How high are you guys getting the DPS-650QB up to voltage wise if I could get them to 12.5 or even 13v or more would be nice. To get like 25 volts with them in series. Wish powerlab 6 and 8s would make there chargers use 36volts and not some weird voltage to get max wattage or better yet get max wattage at 24 volts like the ichargers that can run off 36v. But the pl6 and 8s have the best balancing period guess its a trade off.
Bubba Gump is online now Find More Posts by Bubba Gump
Reply With Quote
Old Jul 18, 2012, 05:14 PM
Lipo Power
BrushlesHeaven's Avatar
Joined May 2009
299 Posts
I will try that, thank you...
Robert




Quote:
Originally Posted by xandrios View Post
Hey BrushlesHeaven.

Those symptoms usually indicate a bad tach output from the fan..
Use an oscilloscope to check if the tach output is working.
If you don't have an oscilloscope, then just replace the existing fan.
BrushlesHeaven is offline Find More Posts by BrushlesHeaven
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Alert Need advice on high grade power supply for ISL-8 Byron Betterly Batteries and Chargers 7 Dec 07, 2003 08:31 PM
12volt, 9amp power supply for sale Paul Susbauer Aircraft - Electric - Airplanes (FS/W) 1 Dec 03, 2003 12:44 PM
12volt wallwart power supply reading 14.6 ? (help) power Batteries and Chargers 4 Sep 09, 2003 04:21 PM
Where to Get A Quality Power Supply? Joe Elston Batteries and Chargers 4 Apr 29, 2003 02:09 PM
High end charger and power supply for sale! Very new. ted616 Aircraft - Electric - Airplanes (FS/W) 6 Dec 02, 2002 11:31 PM