Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Batteries and Charging Support > Brand Specific Charger and Battery Support


Brand Specific Charger and Battery Support Brand Specific Charger and Battery Support


Reply
 
LinkBack Thread Tools Display Modes
Old 03-20-2013, 06:11 AM   #1 (permalink)
Registered Users
 
Posts: 1,718
 
My HF Map location
Join Date: May 2008
Smile eFuel 60amp power supply shutdown??

Hey guys, I cranked up my recently rebuilt charging case today and had a strange shutdown.

Both chargers were pumping out 40 amps into a pair of 6S 5000mah packs in parallel.
The chargers were running at 39.9-40amps and the PS's were producing 46-48amps to supply that.

After about 6-8 minutes both chargers shutdown and both power supplies had 'OPP' on the LCD screen and the fans were running flat out in the power supplies.

I let them continue running fro about 5 minutes as I thought the airflow would be a good thing.

I turned them off then back on after a minute and everything reset ok.

I lowered my charge rate to 35amps per charger and the PS's kept up.

I've been through the one page that came with the eFuel's but there is no info on it at all.

Anyone know what the shutdown was from?
Over current or temperature?

It wasn't overly hot and I thought there was enough airflow in my case, but I'm not so sure anymore....
__________________
Trex family.....100, 450L, 550E 3GX. Goblin 770.Goblin 700 speed machine. Goblin 380.
JR X9503.
PHANTMXR6 is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 03-20-2013, 03:45 PM   #2 (permalink)
Registered Users
 

Join Date: Sep 2012
Default Perhaps

Perhaps it can;t supply 60 AMPS at the full voltage. It is 1200Watts.. E / I x R and all that jazz.
__________________

Mini Prtos 6S Stretch - DS95/DS95i, Mini V-Bar, YGE60 VBAR Ready
CrashAddict is offline        Reply With Quote Quick reply to this message
Old 03-20-2013, 05:36 PM   #3 (permalink)
Registered Users
 
Posts: 5,089
 
My HF Map location
Join Date: Oct 2007
Default

The chargers were pulling 46-48 amps. See below

Quote:
General Description
The eFUEL switching DC Power Supply is designed to use household AC power source to power equipments that required DC power. The eFUEL converts standard household power 100-120V AC or 200-240V AC to 15-24V DC power and can supply up to 60 amperes of continuous power. The maximum output current is regulated by the output power of this power supply and does not exceed 60 Ampere. Maximum Current = 1200W divide by output voltage. ( eg. DC20V output, maximum current = 1200W / 20V = 60A; DC24V output, maximum current = 1200W / 24V = 50A.)
__________________
Revolectrix Ambassador - Charger Specialist Revolectrix.com 10% discount for Batteries GCAM16


Gregor99 is offline        Reply With Quote Quick reply to this message
Old 03-20-2013, 05:53 PM   #4 (permalink)
Registered Users
 
Posts: 1,718
Thread Starter Thread Starter
 
My HF Map location
Join Date: May 2008
Smile

Thanks Greg. I had a sneaking suspicion it was going to be close to that.
I might have a play and see what I can get away with.

They seem to be ok with 35amp charge rates.
I might bump them up a couple of amps and see what happens.

I still wouldn't mind finding out what the OPP on the screen means though.
__________________
Trex family.....100, 450L, 550E 3GX. Goblin 770.Goblin 700 speed machine. Goblin 380.
JR X9503.

Last edited by PHANTMXR6; 03-20-2013 at 05:54 PM.. Reason: added more
PHANTMXR6 is offline        Reply With Quote Quick reply to this message
Old 03-20-2013, 09:11 PM   #5 (permalink)
Registered Users
 
My HF Map location
Join Date: Jan 2011
Default

I found a reference (not specific to eFuel) with OPP referring to Over Power (overload) Protection. Implying you were hitting an actual power limit, not current.

As Gregor99 said, with a 24V output, 1200W is 50A. If they were showing 46-48A (1100-1150W), that may have been close enough to 50A to trigger the protection.

I keep getting an error when trying to include the link with the OPP description, but it's on wikipedia, for Power Supply.
__________________
Gaui X5, iKon, Edge 100, CC BEC Pro.
Tarot 450 Pro FBL, Mini VBar, Ice Lite 50.
BL mCP X, Nano QX, FrSky Taranis, iCharger 308Duo.
RedOctobyr is offline        Reply With Quote Quick reply to this message
Old 05-21-2013, 04:36 PM   #6 (permalink)
Registered Users
 
My HF Map location
Join Date: Oct 2011
Thumbs down

Myself and user Shranky are also having problems with OPP errors. Very frustrating.

Mine occurs around the 40Amp mark (while on generator in field) and around 44Amp @ 24V when on mains (230v) supply.

I will wind down the Vout to 21V (I charge 5s) and see if I get les OPP errors.

Shranky is telling me his OPP happens at 15Amps.

SkyRC did tell me not to parallel up the outputs (that I have done ever this).

THe OPP error is a PITA, hope I Can get it resolved else I will dump it and get something more resilient.
__________________
Logo 600SE, Logo 600-3D , Blade 450X *2, SR120, mCPx (HP05s & 120SR tail CF frame + bling), DX6i & DX7s and a lots of spares
2cants is offline        Reply With Quote Quick reply to this message
Old 05-22-2013, 12:13 AM   #7 (permalink)
Registered Users
 

Join Date: Sep 2011
Default

I had following problems with this unit.

Purchased Efuel 1200W at RC711.COM

As i had new batteries for first few times i charged them only at 24v &10A per channel (have Robbe 2x500w charger).

After few cycles i decided to try out the real power of that power suply, so i cherged two of my 6s 5000MAH at 24v&20A per chanel. After 5 minutes the power suply shuts down and electricity turned off. After turning everything back again, the power suply screen was blinking and nothing worked.

I mailed RC711.COm and never had reply.

After two weeks of waiting i found technician localy and he told me that thermo paste between resistors and radiator short circuit (also he told me that it wasnt first time for my unit and it was repaired before) So i asked him to fix this thing up, what cost me another 80 usd.

And now i am having problems with OPP error, which shows at 24V&15A with only one charger channel working.

I have mailed SKYRC support now, wating for reply.

Maybe someone have any thoughts?
Shranky is offline        Reply With Quote Quick reply to this message
Old 05-24-2013, 01:06 PM   #8 (permalink)
Registered Users
 

Join Date: Sep 2011
Default

Solution which helped me - make your fan work all the time.
Shranky is offline        Reply With Quote Quick reply to this message
Old 05-25-2013, 05:45 AM   #9 (permalink)
Registered Users
 
Posts: 1,718
Thread Starter Thread Starter
 
My HF Map location
Join Date: May 2008
Smile

How do you make the fan work all the time?
__________________
Trex family.....100, 450L, 550E 3GX. Goblin 770.Goblin 700 speed machine. Goblin 380.
JR X9503.
PHANTMXR6 is offline        Reply With Quote Quick reply to this message
Old 05-27-2013, 11:42 AM   #10 (permalink)
Registered Users
 

Join Date: Sep 2011
Default

I am not sure but, guys who did this told me something about soldered resistor
Shranky is offline        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © Website Acquisitions Inc. All rights reserved.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.1