question

matsekberg avatar image
matsekberg asked

SmartSolar select the wrong SmartShunt to get data from

I have a setup in my RV with two batteries (engine and service), a Orion XS between them, smartshunt on both batteries and a smartsolar connected to the service battery.

Without ve.smart networking the service battery voltage can be read of three devices and the readings seems ok given some tolerance:

img-0526.jpeg


When I join all devices to the same network strage things happen. SmartSolar now shows the voltage of the engine batter read over ve.smart!

Still charging the service battery but showing readings from the engine battery:

img-0525.jpeg

I could maybe remove the engine battery smartshunt from the ve.smart networking but that seems odd.

Any ideas?

VE.Smart Network
img-0526.jpeg (435.9 KiB)
img-0525.jpeg (460.4 KiB)
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

4 Answers
Alexandra avatar image
Alexandra answered ·

@MatsEkberg

It is mentioned in the manual

https://www.victronenergy.com/media/pg/VE.Smart_Networking/en/limitations.html#UUID-5a5bad6a-c688-e21b-0b0c-cc89011032a7


"It is not possible to measure multiple battery temperatures/voltages/charge currents: only one Smart Battery Sense or one BMV can be used in a system. Multiple sensors connected to different batteries can lead to charging issues such as overcharging or heating up the batteries"

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

delf67 avatar image
delf67 answered ·

The point of the smart network is to share information between devices that are connected to the same battery.

What are you trying to achieve with the second smartshunt on the engine battery? What do you want it to communicate with?

1 comment
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

matsekberg avatar image matsekberg commented ·

My thought was that the Orion XS could have use of listening to both batteries.

0 Likes 0 ·
delf67 avatar image
delf67 answered ·

You do know you can measure the engine battery voltage with the smartshunt on the service battery using the auxiliary input? Provided they have a common negative.

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

matsekberg avatar image
matsekberg answered ·

Thanx for the answers, So if the starter battery leaves the network everything will be fine, and it actually does!

The reason for me adding the starter battery to the network was to see if the Orion XS would be smart enough to read the current from the starter battery and decrease the charging current if the starter battery current is negative. In my setup, when driving, 1-2 amps are sucked from the starter battery even though the alternator is spinning. Don’t like that :(

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Related Resources


Additional resources still need to be added for this topic

VE.Smart Networking Manual