Victron B2B, what does this mean please?

[Southdowns]

Hi,
I have a Victron Orion B2B Non -Isolated and I am just doing a spot of servicing on it. I was checking the Victron app and it is showing Input voltage lock out, engine shutdown detected.
Would be grateful if someone could let me know what that means? Have had a look in the book that came with it and it says

Shutdown if the input voltage drops below the lock out value and continuous when the input voltage increases above the restart value

Does this mean the voltage in my starter battery is too low for the B2B to kick in and start charging my leisure batteries?

 

[Tombola]

Just means your engine is switched off

start it up wait a few seconds and it shoudl kick back in if the battery needs charge.
if it didnt switch off , it would drain your cab battery if the alternator wasint supplying it

 

[Southdowns]

Just means your engine is switched off

start it up wait a few seconds and it shoudl kick back in if the battery needs charge.
if it didnt switch off , it would drain your cab battery if the alternator wasint supplying it

The engine was running when I checked the app.

 

[Tombola]

The engine was running when I checked the app.

7.6v seems strange, does the battery start the vehicle ok each time.
go into the settings "cog" and choose engine shutdown detection then switch that off and try again

check the voltage and correct alternator settings while you are in there too

and finally sometimes the app can play up...reset or uninstall can fix

apart from that ??? dunno

 

[Southdowns]

Just went downstairs again to check it and now the battery is dead. It started earlier. We last used the van 2 weeks ago and it was fine, been standing outside since then. Battery must have been on the way out and just hanging onto to life.
Looks like a new battery then.

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[Wh05apk]

As we're taking victron b2b, mine is showing as below, despite being parked up with the engine off, does this mean the leisure battery is charging the cab battery?

 

[AdrianChen]

Looks like it is. Is it set to start on d+ or by engine start detection? Mine has been known to come on when I charge the start battery.

 

[Southdowns]

New battery fitted, and bulk charging. I may have some questions on some of the settings but just putting everything back in place first

 

[Wh05apk]

Looks like it is. Is it set to start on d+ or by engine start detection? Mine has been known to come on when I charge the start battery.

Not sure, settings below:

 

[Ditcha]

I don't use the engine shutdown option I prefer using a d+ to start the charger this way it doesn't turn itself on if the settings are wrong when the engine isn't running

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[AdrianChen]

Not sure, settings below:

View attachment 737550 View attachment 737551 View attachment 737552

Your setup does not use d+. Possibly you had another charge source going into the start battery that kept the voltage above the shutdown value.

 

[Wh05apk]

Your setup does not use d+. Possibly you had another charge source going into the start battery that kept the voltage above the shutdown value.

No other charge source, currently parked up in a field, no ehu, engine off.

 

[AdrianChen]

No other charge source, currently parked up in a field, no ehu, engine off.

Somebody more knowledgeable than me will come along! The d+ method is perhaps more reliable and simple to use. The shutdown detection needs to see a clear difference in voltage between the engine idling and stopped mine goes from 14 ish down below the 13.5 quite quickly so seems to work. (my solar only charges the leisure batts) However I don't always check. Just about to change to d+ method because when I turn the start battery's charger on, the b2b has sometimes kicked in and I want to make it foolproof.

 

[ChrisL]

I found on mine that if the engine battery was already fully charged the alternator was only supplying a float voltage to the battery (13.6 volts) which was not enough to trigger the B2B to charge the leisure batteries with the standard alternator setting, changing the start voltage to 13.6 volts solved the problem with the input voltage then showing 14 + volts.