question

Danilo M. avatar image
Danilo M. asked

Victron system problem here

So i have a Victron system with:
SmartLithium Battery 200ah, VE.BMS, 2 Battery Smart protector (1 Engine - 1 to the Battery) Multiplus I 1200, Orion 30ah, SmartSolar 30ah, Cerbo GX.

But something went wrong yesterday, in the middle of the night.
I tested this new system for 2 months and all seems worked pretty well, but as you can see in the VRM graph, something happened yesterday from 00:00 to 8:00 and bms has cut out the multiplus.

vrm-discharge.png


At 9:00 I checked the Victron app too and i found this battery msg:9am-unbalanced.jpg


In the same time Victron Smartshunt say this:
9am-smartshunt.jpg

Someone know what the *p*luck is happening?
I don't have heavy loads in my RV, specially in the night, i have a 60l Fridge by Indelb, an external Monitor, a Macbook and an electrical standing desk.
Fridge, monitor and electrical standing desk was connected during this discharge.

Currently im connected to a grid but battery want charge... i think it's because the bms is cutting out the multiplus. I tryed disconnect all 220v plugs from wall and disconnect and riconnect the entire system, but same problem, battery want recharge.

battery chargingLithium BatteryBMSSmartShunt
vrm-discharge.png (421.9 KiB)
9am-unbalanced.jpg (80.3 KiB)
9am-smartshunt.jpg (61.2 KiB)
4 comments
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.

klim8skeptic avatar image klim8skeptic ♦ commented ·
You have 2 smart battery protects, what state are they in?
0 Likes 0 ·
Danilo M. avatar image Danilo M. klim8skeptic ♦ commented ·

The one connected to the engine say Active, the one connected to the battery say this:

screenshot-2022-08-21-at-105636.png

0 Likes 0 ·
screenshot-2022-08-21-at-105636.png (45.6 KiB)
klim8skeptic avatar image klim8skeptic ♦ Danilo M. commented ·
Disabled by REMOTE. BMS?


Multiplus is running, but unable to charge the battery? Seems a bit odd.

0 Likes 0 ·
Danilo M. avatar image Danilo M. klim8skeptic ♦ commented ·
Multiplus is disconnected by VE.BMS, currently multiplus alarm light blink.
0 Likes 0 ·
3 Answers
Panos avatar image
Panos answered ·

do you have the bms mains detector?



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.

Danilo M. avatar image Danilo M. commented ·
Yes
0 Likes 0 ·
Panos avatar image
Panos answered ·

try disconnect also dc

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.

Stefanie (Victron Energy Staff) avatar image
Stefanie (Victron Energy Staff) answered ·

@Danilo M.

A-SL 11 = low cell voltage alarm. One of the battery cells went below the allowed-to-discharge threshold (default 2.80V - check your battery settings). The BTV inside the battery signals this to the VE.Bus BMS, which then disconnects the loads (load disconnect) to protect your battery from being further discharged.

I suggest leaving your loads disconnected and charging the battery with your chargers (Orion Smart and Solarcharger) as recommended in the manual including sufficient time to balance the battery (at least 2 hours absorption). With MPPT and Orion, this can take some time, possibly even days. See also Q2 and Q3 in the VE.Bus BMS manual.

A system diagram and screenshot of your battery's cell voltages in VictronConnect (currently covered by the alarm message) may also be helpful as the reported voltage from your SmartShunt does not match with the battery alarm or is reporting something other than the battery voltage.

7 comments
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.

Danilo M. avatar image Danilo M. commented ·

Currently cells are balanced, i'm connected to the grid and i think bms maintain their voltage on a safe level.

screenshot-2022-08-21-at-112852.png

0 Likes 0 ·
screenshot-2022-08-21-at-112852.png (63.4 KiB)
Show more comments