Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-15-2020, 04:26 PM   #1
2 Rivet Member
 
GoingPhishin's Avatar
 
2017 Interstate Grand Tour Ext
Castle Rock , Colorado
Join Date: Feb 2019
Posts: 31
Need some install advice on the Victron BMV-712

I spent the weekend upgrading to the Victron 100/30 charge controller and BMV-712 battery monitor.

The charge controller seems to work. Here is a photo:



The monitor, however, does not seem to work. I do not have an amp reading and the time remaining says infinite.




Here is how I setup the shunt. I have no idea about the white wire to the post. There was a cut white wire that was not connected to anything. I thought it might be a ground? In any event, I connected it the negative post. Any thoughts on this?


GoingPhishin is offline   Reply With Quote
Old 03-15-2020, 07:24 PM   #2
4 Rivet Member
 
2017 27' International
Lake Havasu City , Arizona
Join Date: Feb 2017
Posts: 308
BMV-712 hookup

It's not possible to tell from that photo how you wired the shunt.

The basics: ALL the wires that were on the negative battery post must be relocated to the "load" side of the shunt. And only one wire must be connected from the negative battery post to the "battery" side of the shunt. The fact that the BMV-712 is seeing battery voltage but not seeing current flow suggests that this is not wired correctly.

Also, the skinny wire with tiny inline fuse holder that came with the BMV-712 must be connected from the "+B1" terminal on the side of the shunt to the battery's positive terminal. Since the BMV-712 can read battery voltage, I'm guessing this was done correctly.

I don't know what the "cut white wire" you're talking about is. It doesn't sound like something that came with the BMV-712. Did you follow it to see where it originated? In general, if you don't know what a wire is for, I wouldn't recommend connecting it to anything. And in any case, no wire should be connected to the battery's negative post, except for the jumper from the shunt.

If you're not sure about all this, see figure 3 of the Quick Installation Guide, ignoring the dashed-line parts.
Paprika is offline   Reply With Quote
Old 03-15-2020, 08:59 PM   #3
2 Rivet Member
 
GoingPhishin's Avatar
 
2017 Interstate Grand Tour Ext
Castle Rock , Colorado
Join Date: Feb 2019
Posts: 31
Thanks, Paprika. In all honesty, today was one of those extremely frustrating ownership days. I felt like throwing my whole tool box off a cliff.



Here is a better picture of the shunt. The white wire I had attached is circled in yellow. I cut it after I attached it (mostly out of frustration).


GoingPhishin is offline   Reply With Quote
Old 03-15-2020, 09:40 PM   #4
Site Team
 
wulfraat's Avatar

 
2017 30' International
Broomfield , Colorado
Join Date: Apr 2009
Posts: 2,898
Images: 1
Are you certain the CBL8 cable is not the one coming from the battery?
wulfraat is offline   Reply With Quote
Old 03-16-2020, 05:43 AM   #5
4 Rivet Member
 
fran&frank's Avatar
 
2016 27' Flying Cloud
Hartsburg , Missouri
Join Date: Dec 2015
Posts: 399
Did you program the settings on the BMV-712 for your battery? --Frank
__________________
Frank & Fran
2016 27' FC FB with 600 W solar
2016 Ford F150 EcoBoost
Equalizer Hitch
fran&frank is offline   Reply With Quote
Old 03-16-2020, 06:15 AM   #6
CLOUDSPLITTER "Tahawus"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 17,138
Images: 1
Your status screen looks the same as ours, fully charged, not charging with no draw. NPF🤓


Bob
🇺🇸
Attached Thumbnails
Click image for larger version

Name:	fullsizeoutput_2c0d.jpg
Views:	46
Size:	129.5 KB
ID:	363364  
__________________
Obrigado, hora de descansar.

Tahawus
🌤
ROBERT CROSS is offline   Reply With Quote
Old 03-16-2020, 06:45 AM   #7
3 Rivet Member
 
Paradise , Texas
Join Date: Nov 2017
Posts: 163
It looks like you are in an interstate. Your batteries are under the van. Unless you have relocated them. Just the connection at the Magnum is not enough to give a proper load or capacity reading. You really need to isolate the negatives from the battery to the shunt, even if it means relocating shunt, or running new cables.
Crackerman is offline   Reply With Quote
Old 03-16-2020, 08:10 AM   #8
2 Rivet Member
 
GoingPhishin's Avatar
 
2017 Interstate Grand Tour Ext
Castle Rock , Colorado
Join Date: Feb 2019
Posts: 31
Quote:
Originally Posted by wulfraat View Post
Are you certain the CBL8 cable is not the one coming from the battery?

I am pretty sure that it is not. I don't think I would have a voltage reading if it was not. I'll double check.

Quote:
Originally Posted by fran&frank View Post
Did you program the settings on the BMV-712 for your battery? --Frank
I believe I did. See photo:


Quote:
Originally Posted by ROBERT CROSS View Post
Your status screen looks the same as ours, fully charged, not charging with no draw. NPF🤓


Bob
Thanks. When I turned on the super fan or tried some other load, the reading did not change. I assume that it would have shown some amp changes.

Quote:
Originally Posted by Crackerman View Post
It looks like you are in an interstate. Your batteries are under the van. Unless you have relocated them. Just the connection at the Magnum is not enough to give a proper load or capacity reading. You really need to isolate the negatives from the battery to the shunt, even if it means relocating shunt, or running new cables.
Yes, it is an Interstate. I believe that the negative directly from the battery is isolated to the shunt. The shunt then is connected to the common negative post which then goes to the Magnum (I think).
GoingPhishin is offline   Reply With Quote
Old 03-16-2020, 10:40 AM   #9
2 Rivet Member
 
jhayesas's Avatar
 
Kansas City , Missouri
Join Date: Feb 2019
Posts: 94
I'm following this thread closely and once you work out the details, I would like to get this installed in my rig.
jhayesas is offline   Reply With Quote
Old 03-16-2020, 11:23 AM   #10
3 Rivet Member
 
2013 Interstate Coach
Indianola , Iowa
Join Date: Jun 2019
Posts: 156
I installed this a few weeks ago. You have to rewire your batteries so they are wired in parallel and not to a common negative and a common positive.
nateallen80 is offline   Reply With Quote
Old 03-16-2020, 08:48 PM   #11
Site Team
 
wulfraat's Avatar

 
2017 30' International
Broomfield , Colorado
Join Date: Apr 2009
Posts: 2,898
Images: 1
It could be a bad shunt, its possible. In my most recent install the 712 was giving erroneous readings. Replaced and all was well. If you turkey have everything wires correctly and have verified with the voltmeter at various points then try swapping the bmv.
wulfraat is offline   Reply With Quote
Old 03-17-2020, 10:47 AM   #12
2 Rivet Member
 
GoingPhishin's Avatar
 
2017 Interstate Grand Tour Ext
Castle Rock , Colorado
Join Date: Feb 2019
Posts: 31
Quote:
Originally Posted by wulfraat View Post
Are you certain the CBL8 cable is not the one coming from the battery?

Wulfraat was correct (partially). Turns out the CBL8 is the ground for the battery. For some reason it goes to the ground buss. I moved it to the shunt (along with the negative) and everything seems to be working.
GoingPhishin is offline   Reply With Quote
Old 03-17-2020, 05:15 PM   #13
Site Team
 
wulfraat's Avatar

 
2017 30' International
Broomfield , Colorado
Join Date: Apr 2009
Posts: 2,898
Images: 1
Cool
wulfraat is offline   Reply With Quote
Old 03-25-2020, 11:53 AM   #14
Rivet Master
 
2016 30' International
redondo beach , California
Join Date: Feb 2017
Posts: 575
A happy ending! Listen to the rat.
__________________
Randy and Beth 15 F250, 16 30' International, ProPride, Dexter 3" lift, Michelin 16, Dill TPMS, Centramatics, Battleborn x4, Victron BMV and 1.2KW inverter, Orion DC/DC, BlueSolar MPPT, 300W solar, Alpine iLX, Polk MM1, Samsung smart 42"
mythbuster88 is offline   Reply With Quote
Old 07-18-2020, 09:32 AM   #15
2 Rivet Member
 
jhayesas's Avatar
 
Kansas City , Missouri
Join Date: Feb 2019
Posts: 94
Quote:
Originally Posted by GoingPhishin View Post
Wulfraat was correct (partially). Turns out the CBL8 is the ground for the battery. For some reason it goes to the ground buss. I moved it to the shunt (along with the negative) and everything seems to be working.
Can you post an updated picture of your install?
jhayesas is offline   Reply With Quote
Old 07-18-2020, 09:54 AM   #16
2 Rivet Member
 
GoingPhishin's Avatar
 
2017 Interstate Grand Tour Ext
Castle Rock , Colorado
Join Date: Feb 2019
Posts: 31
Quote:
Originally Posted by jhayesas View Post
Can you post an updated picture of your install?
Sure. I am away from my van right now. Give me a couple of days.

I ended up having a bad shunt that I had to send back as well as a blown battery fuse. That really messed up the install. Other wise, this should have been really straight forward.
GoingPhishin is offline   Reply With Quote
Old 07-24-2020, 04:39 PM   #17
2 Rivet Member
 
jhayesas's Avatar
 
Kansas City , Missouri
Join Date: Feb 2019
Posts: 94
Quote:
Originally Posted by GoingPhishin View Post
Sure. I am away from my van right now. Give me a couple of days.

I ended up having a bad shunt that I had to send back as well as a blown battery fuse. That really messed up the install. Other wise, this should have been really straight forward.

I ordered a Victron SmartShunt today and will be installing it next week. My environment looks like below so if anyone has any input or advice, that would be greatly appreciated.
Attached Thumbnails
Click image for larger version

Name:	PreShuntInstall.jpg
Views:	33
Size:	251.5 KB
ID:	373854  
jhayesas is offline   Reply With Quote
Old 07-24-2020, 04:48 PM   #18
CLOUDSPLITTER "Tahawus"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 17,138
Images: 1
I don't see a negative buss bar, all neg wires go there.
The negative battery wire goes to the input side of shunt with the output side wired to the buss bar.
That's how I wired, seems to work properly, am I wrong?

Bob
🇺🇸
Attached Thumbnails
Click image for larger version

Name:	14F1D1C0-18A4-4519-B36F-E6EA0A258395_1_201_a.jpg
Views:	25
Size:	296.8 KB
ID:	373856  
__________________
Obrigado, hora de descansar.

Tahawus
🌤
ROBERT CROSS is offline   Reply With Quote
Old 07-24-2020, 05:11 PM   #19
Rivet Master
 
PB_NB's Avatar
 
2019 22' Sport
Port Coquitlam , British Columbia
Join Date: May 2020
Posts: 800
Images: 9
Blog Entries: 1
Hi Bob, I ran a single lead from the battery neg to the Shunt (BATT ONLY) and then the load side went to the negative bus. I ran the battery pos to the positive distribution block and the hooked up my solar input the the (LOAD) side of the shunt and the positive distribution block.

That looks like the negative bus in your photo. I would think that one of those heavy gauge black wires goes to the (LOAD) on you shunt. ??
__________________
--------------------
Peter.

"Live Long and Prosper \\//" - Spock
PB_NB is offline   Reply With Quote
Old 07-24-2020, 05:29 PM   #20
CLOUDSPLITTER "Tahawus"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 17,138
Images: 1
The arrow points to the negative wire from the batteries.
The shunt is wired to that wire down stream not visible, on the floor.

Bob
🇺🇸
Attached Thumbnails
Click image for larger version

Name:	14F1D1C0-18A4-4519-B36F-E6EA0A258395_1_201_a.jpg
Views:	21
Size:	327.5 KB
ID:	373858  
__________________
Obrigado, hora de descansar.

Tahawus
🌤
ROBERT CROSS 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
Victron BMV-712 Battery Monitor Shunt Install location 5150mike Electrical - Systems, Generators, Batteries & Solar 35 06-25-2020 05:50 AM
Victron BMV-712 Smart Battery Monitor Install&Review lzhome Generators & Solar Power 0 10-03-2019 05:05 AM
Victron BMV-712 Install Question Rounder44 Electrical - Systems, Generators, Batteries & Solar 25 11-23-2018 05:53 PM
Question regarding Victron BMV-712 billrector Batteries, Univolts, Converters & Inverters 26 05-30-2018 03:21 PM
Victron BMV-712 install in 2017 30 International dmcgaugh Batteries, Univolts, Converters & Inverters 3 03-09-2018 12:24 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 12:52 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.