question

user0815 avatar image
user0815 asked

DVCC limit charge current does not work

Hello. 

I installed a new Mulitplus 2 48/5000. DVCC limit charge current does not work. With the old Quattro, DVCC worked without any problems. Did I make a mistake somewhere? 

System setup: 
ESS with Cerbo 
MPPT chargers show "external control".
 
greeting 
Paul

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DVCC
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5 Answers
Guy Stewart (Victron Community Manager) avatar image
Guy Stewart (Victron Community Manager) answered ·

Hi,

Is it a momentary spike, or are you seeing sustained charge currents like this for long periods of time (minutes)?

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user0815 avatar image user0815 commented ·
I waited 5 minutes. The charging current remains constant at the maximum.
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Guy Stewart (Victron Community Manager) avatar image Guy Stewart (Victron Community Manager) ♦♦ user0815 commented ·

Do you mind if I have a look at the VRM account?
What is the site name?

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user0815 avatar image user0815 Guy Stewart (Victron Community Manager) ♦♦ commented ·

I can add you as a user on the VRM.

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thomasw-1 avatar image thomasw-1 commented ·

Hi Guy,

Today I performed a test on the "Limit Charge Current" feature. In my configuration I have an AC-OUT attached 3-phase Fronius inverter (6kW) and a DC-attached Victron MPPT (5kW). Battery is a BYD LVL, VenusOS on version 2.72. Setup as 3-phase system.

After having set the charge current limit to a very low value (e.g. 10A, 5A or 0A) the Fronius inverter power got fully redirected instead to battery into grid. However the MPPT continued pushing all energy into battery. So the MultiPlus-II did not invert that energy and directed that into grid as well. MPPT shows "External Control", so it should be actually under control of DVCC.

Since @user0815 uses MPPT only, the route cause could be identical.

So the feature did not not work as described in DVCC manual: "If a CANBUS-BMS is connected and the BMS requests a maximum charge current that is different from the user-configurable setting, the lower of the two will be used."

Any advice?


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seb71 avatar image
seb71 answered ·

What is set as battery monitor in DVCC?

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user0815 avatar image
user0815 answered ·

BMV-712 set as battery monitor

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fadi-lab avatar image
fadi-lab answered ·

Hello ,

I have the same problem with my DVCC Limit charge current settings.

i set to 70A , both solar chargers work well with 70A maximum charge current to the battery, but if I turn on the main Grid power to the Quattro inverter, the battery charge current is more than 70A.

Can you help please?

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fadi-lab avatar image
fadi-lab answered ·

list.jpg

victron system


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