Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-29-2016, 03:49 PM   #43
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 1,655
Quote:
Originally Posted by FlyFishinRVr View Post
I thought the OEM charge controller was a 3 stage unit....???

Do you have a recommendation for one that can handle higher wattage and is relatively plug and play with the existing control inputs/outputs? I realize the existing wiring is only good for 10A so it wouldn't need to be anything that can handle more than that. I don't camp in the sun so I have no intent to use solar to run my systems, just keep the batts charged up while the rig is stored.

Thanks!
No the Atkinson Electronics Inc. charge controller used by Airstream, which they call the "Sun Explorer Charger Controller" is a single stage on/off pulsed voltage controller. I could never find the exact operational technical details. The best document I found is attached.

There was a great thread earlier this year about changing the panels and controller. Here is the link to that thread:
http://www.airforums.com/forums/f240...-w-150403.html

Post #12 in this thread is from Lew Faber, our resident expert on solar upgrades. He recommends the Morningstar 10 or 15 watt basic controller. Here are his words quoted for your convenience:
==================
"The Atkinson controller should go the way of the Parallax converters supplied in the trailers........ THE GARBAGE BIN!!!!!!

I simple swap out to a Morningstar 10 or 15 amp basic solar charge controller will greatly improve your system's performance and WILL provide for proper 3-stage battery charging.

It's really a no brainier!!!! You can even add Morningstar's remote monitor if you like.


Lew Farber
RVIA/RVDA Nationally Certified Master Tech"
======================


Enjoy,
- - Mike
Attached Files
File Type: pdf Atkinson PVDM4-LC-KIT.pdf (280.6 KB, 13 views)
__________________

__________________
Boxster1971 is offline   Reply With Quote
Old 09-29-2016, 07:22 PM   #44
3 Rivet Member
 
2013 Interstate Coach
Raymond , Iowa
Join Date: Jun 2014
Posts: 126
Here is an excerpt from Precision Circuits on how to troubleshoot the BIM. It helped me find a blown fuse by the coach battery:

Press Dash Switch. Relay should audibly click and Voltage from Chassis Terminal to Coach Terminal should be <0.2V. If Not, Check for 12V power from Dash Switch to Ground Terminal directly on Relay. (Do not use a Chassis Ground) If 12V present and Relay does not click or bring Chassis and Coach Battery Voltage close, replace Relay.

Release Dash Switch Start Engine & Turn on Coach LightsWait between 20 seconds and 2 minutes and Relay should click. Voltage from Dash Switch Terminal to Ground Terminal should be between 3.5Vdc to 6.0Vdc. If not check that Chassis Terminal >13.3Vdc, Coach Terminal <12.6Vdc, Ignition Terminal >12Vdc. (Check that Chassis and Coach Battery connections are not reversed)

Turn off Engine Plug in Shore Power & Turn on Battery Charger Turn on Head LightsWait up to 10 minutes and Relay should click. Voltage from Dash Switch Terminal to Ground Terminal should be between 3.5Vdc to 6.0Vdc. If not check that Coach Terminal > 13.3Vdc, Chassis Terminal <12.6Vdc, Ignition Terminal <2Vdc.
__________________

__________________
Titus is offline   Reply With Quote
Old 09-29-2016, 09:49 PM   #45
3 Rivet Member
 
FlyFishinRVr's Avatar
 
2017 Interstate Lounge Ext
Northern , California
Join Date: Aug 2016
Posts: 160
Crazy idea for keeping chassis battery topped up?

Quote:
Originally Posted by Boxster1971 View Post
No the Atkinson Electronics Inc. charge controller used by Airstream, which they call the "Sun Explorer Charger Controller" is a single stage on/off pulsed voltage controller. I could never find the exact operational technical details. The best document I found is attached.

There was a great thread earlier this year about changing the panels and controller. Here is the link to that thread:
http://www.airforums.com/forums/f240...-w-150403.html

Post #12 in this thread is from Lew Faber, our resident expert on solar upgrades. He recommends the Morningstar 10 or 15 watt basic controller. Here are his words quoted for your convenience:
==================

Enjoy,
- - Mike


Great stuff, thanks Mike!
__________________
FlyFishinRVr is offline   Reply With Quote
Old 10-10-2016, 09:33 PM   #46
3 Rivet Member

 
2016 Interstate Grand Tour Ext
Houston , Texas
Join Date: Oct 2015
Posts: 185
A simple solution without doing an extensive upgrade. You will have to run leads from the chassis battery.

http://www.morningstarcorp.com/products/sunsaver-duo/
__________________
Mcrider is offline   Reply With Quote
Old 10-10-2016, 11:46 PM   #47
3 Rivet Member
 
FlyFishinRVr's Avatar
 
2017 Interstate Lounge Ext
Northern , California
Join Date: Aug 2016
Posts: 160
Quote:
Originally Posted by Mcrider View Post
A simple solution without doing an extensive upgrade. You will have to run leads from the chassis battery.

http://www.morningstarcorp.com/products/sunsaver-duo/
I thought about that controller, but in order to get the temp compensation, you need to install the controller in the battery bay. That means you really need the remote meter to go with it, so that's $160 and you still need a solar panel. If I were going to go that route (something quick and temporary), I'd probably go with the Renogy Adventurer since it has a built-in LCD display and a temp probe on a fairly long lead (80"), and it's only $90.

I had hoped my little 5W panel would keep the chassis battery topped up, but given what I'm seeing with the set points on the Atkinson charge controller and Precision Circuits BIM, the chassis battery is getting way too low for it to even hope to keep up (about 12.4V, or 70% SOC). That means any charging solution I come up with for the chassis battery needs to make up approx. 30% SOC on a 80 AH battery, or up to 24A in a day!

That means one of two things: Get a 100W panel (and a suitable charge controller) and put it in the window of my rig when it's being stored to keep the chassis battery happy (very easy to install), or bite the bullet and permanently install a second 100W panel on the roof and replace the Atkinson charge controller with something else (maybe the Renogy 20A MPPT controller and Tracer remote meter.....only $180 for both!). The first option is really quick and easy and requires no permanent mods, the second is a bit more involved.

Of course there is option #3, and that's to pull the chassis battery disconnect to detach it from the parasitics that are pulling it down and see if my little 5W charger is able to keep up with natural discharge. I'd just have to direct-connect it to the battery vs. using the 12V socket in the dash. Hmmmm.......
__________________

__________________
FlyFishinRVr is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Best Propane Generator to Keep Batteries Topped Off While Furnace On interstateflyer Electrical - Systems, Generators, Batteries & Solar 36 11-02-2015 12:42 PM
Crazy Storage Idea (Market Research) LittleRadio Winterizing, Storage, Carports & Covers 42 11-18-2007 04:59 PM
Crazy Idea Fish36991 Airstream Trailer Forums 24 09-19-2006 07:10 PM
Crazy A/C Idea Alsupp Furnaces, Heaters, Fireplaces & Air Conditioning 2 03-09-2006 09:40 PM


Virginia Campgrounds

Reviews provided by



Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:13 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.