OK.....a picture is a thousand words and you can understand that looking at that pic says they'll be welding with 12 volts going on :naughty:
Victron BMV 600 install problem
- Thread starter rexabbot
- Start date
- Status
Is it possible because I have both the power for the Victron and the cable coming from the Xantrex inverter charger on the same positive battery post, that when I plug into shore power it is causing a direct short from the charger to the shunt?
More information: I connected the Xantrex inverter/charger cable only to the positive post. I then tested shore power plugged in. (The power to the Victron was NOT connected.) With the shunt in-line it made the humming noise from the batteries. With the shunt not in-line it didn't. Again this humming happends only when plugged into shore power.
That seems to me that something is not playing well between the shunt and the inverter/charger.
Can it be a bad shunt??
That seems to me that something is not playing well between the shunt and the inverter/charger.
Can it be a bad shunt??
One other point: I have DC from the solar panel to the coach without the batteries connected. Is this normal?
I have a ground running to the frame of the motor home and the Negative cable from from the Inverter/charger to the batteries.
As per my previous posts, why would any of this make a difference if the only varible is the shunt being in-line or not? That is what has me stumped.
What is the shunt doing - causing resistance?
Can't be a dead short because I would have the short whether the shunt is in-line or not?
Thanks for all your help on this!!! The more brains the better
I just tested the shunt. I unmounted from the wall. Still hums. I took the circut board of the shunt to rule out the circut board being the problem. Still Hums.
So the bare shunt no circut board causes the humming condition on the batteries. NO shunt in line (only varible change) no hum. Only when connected to shore power.
So the bare shunt no circut board causes the humming condition on the batteries. NO shunt in line (only varible change) no hum. Only when connected to shore power.
I'm stumped too but I'm wondering if you need a different size shunt..... all's its doing is measuring the resistance....sounds like a call to Victron is next on the agenda maybe some of the other wiring guru's like Stu or MS may have some input.
As per my previous posts, why would any of this make a difference if the only variable is the shunt being in-line or not? That is what has me stumped.
What is the shunt doing - causing resistance?
The photos are nice, but I've suggested many times that answers to almost all electrical questions require a wiring diagram. How about sketching one up, doesn't need to be too fancy, but should be correct as far as what you're doing, scan it in and post it. Could be we could help a lot more that way, 'cuz I've been following this and between the different wire colors and your statements about "that's not what I did but what I'm going to do," I'm confused at best.
Just to confirm that you're doing it right, in addition to your installation manual, http://c34.org/bbs/index.php/topic,6032.0.html
Just to confirm that you're doing it right, in addition to your installation manual, http://c34.org/bbs/index.php/topic,6032.0.html
AHA
Well, that's certainly helpful.
And exactly why it is NOT working.
The shunt doesn't go anywhere near the (-) for the I/C.
The shunt has to go between the (-) on the battery bank and the engine ground.
RTFM.
Again.
Maine Sail did a writeup on how to install a shunt. Go check on the musings with Maine Sail under Featured Contributors.
Here it is: http://forums.catalina.sailboatowners.com/showthread.php?t=125606
Good luck.
Well, that's certainly helpful.
And exactly why it is NOT working.
The shunt doesn't go anywhere near the (-) for the I/C.
The shunt has to go between the (-) on the battery bank and the engine ground.
RTFM.
Again.
Maine Sail did a writeup on how to install a shunt. Go check on the musings with Maine Sail under Featured Contributors.
Here it is: http://forums.catalina.sailboatowners.com/showthread.php?t=125606
Good luck.
Thanks for the reply! I read the post that MS did on "Wiring and Installing a Battery Monitor." That is where I got the attached picture.
I am not sure where I would hook the negative cable from the Inverter/Charger? It has to go to the batteries.
Can you tell me where that cable would go if not to the shunt? It was connected to the battery directly. All I did was remove it from the battery and placed in on the shunt.
Attachments
Do you see where is says, quite prominently, BATTERY CHARGER NEGATIVE?
Your I/C is a battery charger.
That's where you connect it.
Notice that it is downstream from the shunt, and on the wire from the load side of the shunt to the engine ground.
You should purchase a bus bar or a Power Post to make that happen. For the time being, to make sure it works, use a couple of washers and a bolt to hold the connections of EVERY OTHER NEGATIVE WIRE ON your boat.
Battery negative to shunt (battery side of shunt) only ONE wire allowed!!!
Shunt
Shunt to bus bar (from the load side of shunt)
Bus bar holds ALL other negatives
Bus bar to engine ground
Pretty much what the picture shows, and what the manual shows, too.
Look at the NEXT picture down on MS's article. It shows that.
Am I missing something?
That line should be mine. "Am I missing something?"
With the exception of the bus bar that is the way mine is connected. If I put the charger negative on the "load" side of the shunt, isn't that the same as connecting a bus bar to the negative "load" side of the shunt and then connecting the charger negative to the bus bar as illustrated in the picture??
Yes, it should be, but that didn't seem to be what your sketch showed. The sketch implied that the shunt was between the I/C (-) and the bank. And the sketch didn't show the engine ground. Why not complete the sketch showing all the wires?
Whoops, you just did. Looks right to me.
- Status