Victron XS 12/50 wiring

[prhiii]

Newbie here. I see some related threads but a little confusing.

I've had a Victron 12/12 30A isolated DC-DC charger in my 2018 Toyota Land Cruiser. Power wire runs from starter battery to rear of vehicle. Using a ground cable to the chassis which goes to input of Victron. Victron output = ground and power connect direct to Lithium battery posts. Works fine.

Upgraded to the new XS 12/50A non-isolated. Input wiring same as above. Output from Victron, power direct to Lithium battery. Ground goes to chassis. The Lithium battery also has a ground from negative terminal going to the same ground chassis as Victron.

In looking at the Victron app, I can see ~ 14v on the input side and ~ 14V on the output. But there is 0A and 0W on output so battery isn't charging, stuck in Absorption. Battery BMS app shows standby, not charging. Tuned off engine shutdown detection to eliminate that.

I suspect it's ground related. Thoughts?

 

[HRTKD]

Take a screenshot of your other parameters. I don't think it's how you have the device wired as mine is wired similarly.

 

[prhiii]

I upgraded the firmware when I got this. It's at the latest. LiTime 100ah lithium.

 

[mikefitz]

It's at the latest

Have you got the HL connector link in place ?
Check the other settings like 'delay to startup'

 

[HRTKD]

My guess is that once the target battery voltage, as seen by the Orion XS, drops down to the 13.5 float voltage then you'll see charge amps.

It's odd that the BMS app says 13.2 volts but the Orion says 14.4 volts.

 

[prhiii]

Have you got the HL connector link in place ?
Check the other settings like 'delay to startup'

 

[S Davis]

Probably a dumb question but are the input and output reversed?

 

[chrisski]

Is there any possibilty that the BMS is tripped?

 

[prhiii]

Probably a dumb question but are the input and output reversed?

I don't think so. I have a digital battery gauge on my dash for my starter battery. When I compare volt reading on it and the Victron input from their app, both are spot on same readings. Edit - I also hooked a meter from the DC charger output to the positive battery, after the 60a fuse, and it was reading 14.x. So fuse is good. Power is flowing.

 

[prhiii]

Is there any possibilty that the BMS is tripped?

I thought about that but If I connect the older Victron 12/12 30a via Anderson connectors, battery starts charging.

 

[HRTKD]

Drill down into the Engine Shutdown Detection screen and show that please.

I'll go back to what I said earlier. The target battery voltages shown in the Orion XS and the BMS app are so far off that something isn't right.

 

[prhiii]

Drill down into the Engine Shutdown Detection screen and show that please.

I'll go back to what I said earlier. The target battery voltages shown in the Orion XS and the BMS app are so far off that something isn't right.

First image taken at startup (as expected with 120s startup delay).
Second image - Shutdown settings
Third - turned off shutdown detection setting, tried this before.
Fourth - measured voltage from Victron XS output to battery terminal (after the MIDI fuse). 14.4 which is what Victron output shows on app.
Fifth - user defined alternator. FWIW - My truck has a temperature compensating alternator.

I'm tempted to run the negative on the Victron XS straight to the lithium battery negative terminal like the Victron 12/12 30a that I swapped out which charged the battery. Yet the battery negative is grounded to chassis, same as the Victron XS so that shouldn't make a difference. I have to remove the top cover of my drawer system to get to everything which I would rather avoid.

I did open a support ticket with Victron. Added my serial # and they must have determined that I purchased this on Amazon through Invertersrus. Support ticket has been assigned to techsupport@invertersrus.com and no updates from them.

 

[HRTKD]

In your other post, the source battery voltage was 13.9 volts. The shutdown configuration has the start voltage as 14.0 volts. So of course the Orion XS isn't going to be putting out any current. Once the source battery is above 14.0 volts you'll see current.

 

[prhiii]

In your other post, the source battery voltage was 13.9 volts. The shutdown configuration has the start voltage as 14.0 volts. So of course the Orion XS isn't going to be putting out any current. Once the source battery is above 14.0 volts you'll see current.

Even when turning off the enable shutdown configuration,

 

[prhiii]

Even when turning off the enable shutdown configuration,

That's what I was thinking. Tried this also:

 

[mikefitz]

that the BMS app says 13.2 volts but the Orion says 14.4 volts.

Orion says 14.4 volts at output, BMS says 13.2, suggests an issue with path between charger and battery. Measure the battery with a meter.
Perhaps the battery is protection mode. Perhaps there is a connection problem.

Edit, a correction to Orion output volts.

 

[HRTKD]

Orion says 13.8 volts at output, BMS says 13.2, suggests an issue with path between charger and battery. Measure the battery with a meter.
Perhaps the battery is protection mode. Perhaps there is a connection problem.

The output is the top frame and the input is the bottom frame. That doesn't seem intuitive to me.

 

[mikefitz]

seem intuitive to me.

Thanks for pointing that out. Fooled me, will correct my post.

 

[prhiii]

I will need to take the shelf/top off my drawer to get to the charger and battery. The positive 4ga from Victron XS output to battery is only about 2.5 feet and it's directly wired so don't think it's that. Will inspect the ground points and other wiring and post back.

 

[Weekend van]

I would run the ground from the DC/DC directly to the battery. That will give the Victron the best reading of what the battery is without errors in extended grounds and ground junctions.

If you load the house battery, does the Victron start showing a charge? If the battery is full, it isn't going to take any more charge.

 

[prhiii]

I ran the (edit) ground negative from the Victron XS DC charger direct to battery. Edit (verified negative cable from battery was properly grounded to chassis). Problem solved, it's now charging.

Thank you all for your feedback and suggestions. Very much appreciated.

 

[HRTKD]

So apparently it was ground related.

When you say "ground" I think of a third wire that has to be attached to a component and the wire goes to a ground busbar which then goes to the chassis. This is a component ground (to me). What you had was a negative cable (to me).

 

[prhiii]

So apparently it was ground related.

When you say "ground" I think of a third wire that has to be attached to a component and the wire goes to a ground busbar which then goes to the chassis. This is a component ground (to me). What you had was a negative cable (to me).

correct, edited previous post. Thanks for your help.