question

varg avatar image
varg asked

How to Configure Multiplus only as a charger for lithium batteries?

Objective: Configure Multiplus only as a charger for lithium batteries


We are using:

-Cerbo GX

-Multiplus II 48/3000/35/-32

-DYNESS B3 48V - 3.6 kWh

1651869881166.png

Cerbo GX connected to Multiplus (VE.Bus)

Cerbo GX connected to battery (BMS-Can)


We have configured:

Settings > Services > BMS-Can port > CAN-bus profile > “CAN-bus BMS (500 kbit/s)”

Settings > System configuration > Battery monitor > “DYNESS-L battery on CAN-bus”

Device List > Multiplus-II 48/3000/35-32 > Switch > Charger Only


However, when we supervise on the remote console, it always indicates 100% at 49V and does not charge, we have maintained it for hours.

1651869770297.png

Any additional configuration that is needed so that the load percentage corresponds to the real one and the module works as a charger?

Multiplus-IIbattery chargingBMScharger
1651869770297.png (44.7 KiB)
1651869881166.png (105.2 KiB)
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3 Answers
kevgermany avatar image
kevgermany answered ·

In the multiplus charger settings you need to set the battery parameters. These must be those recommended by the battery maker. The voltage shown is too low and the charger is in bulk mode with zero current. That's odd.

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varg avatar image varg commented ·

Where can I find those settings? I have checked in the remote console and I can't find those voltage parameters

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varg avatar image varg varg commented ·

Dyness > Parameteres1652196355323.png


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Paul B avatar image
Paul B answered ·

Its the batterys BMS thats showing you the 100% so check your batterys BMS settings as thats acting as the battery monitor and thus whats displayed is what that is reporting.

It may also be controlling the charging as well if DVCC is turned on

Contact your battery supplier

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varg avatar image varg commented ·

Yes DVCC is on. Where can I find the BMS configuration? sorry, we have no experience with this equipment

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Warwick Bruce Chapman avatar image
Warwick Bruce Chapman answered ·

Check that a circuit breaker hasn't tripped on the battery somewhere.

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varg avatar image varg commented ·

Should I open the battery to check it?

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