USER MANUAL - VICTRON 48V INVERTER TO LBSA SMART BATTERY

PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATING AND RETAIN FOR FUTURE REFERENCE.

This manual is intended to offer Lithium Batteries South Africa clients with Victron specific guidance when setting up communication between the battery and inverter. For further details pertaining to the setup of the Victron equipment not pertaining directly to the LBSA interface please refer to the various manuals available on the Victron website. Likewise, for further information pertaining to the LBSA batteries, please refer to the LBSA website to download the user manuals (https://lithiumbatteriessa.co.za/) or contact Lithium Batteries South Africa at 010 110 1991.

In all cases a GX-device running Victron's Venus OS is required to receive, process, and transmit the commands and information communicated by the LBSA SMARTBMS to the Victron system.

In all cases the latest available firmware should be installed on the Victron devices.

LBSA Smart battery models are rated for specific maximum power discharge and charge (kWh). It is recommended to size the battery according to the maximum output of the inverter. I.e. if the inverter has a continuous output power of 5000va then a 5kwh battery is needed as a minimum. It is not recommended to exceed the maximum kWh values provided in the specification sheet for each respective battery. Further to above, the LBSA should be sized so as to provide adequate energy capacity in kWh to meet the load demands of the system and to receive most of the excess solar generation each day (for self-consumption installations).

The LBSA battery transmits, amongst others, the following messages to the GX-device:

All of the above information can be viewed in the LBSA device sub menus on the GX-device. Specific setup of the GX-device and the MultiPlus/Quattro is required to ensure the required control is implemented. If the CAN bus cable is removed or damaged the Victron inverters will shut down within 5 minutes. This prevents continued operation in the absence of communication from the battery. Likewise, the MPPT's will stop producing power to the DC bus.

The connection of the LBSA to the GX-device is extremely simple. The LBSA to Victron cable is required of the desired length, with one end plugged into the CAN port on the LBSA battery and the other end plugged into one of the CAN sockets on the GX-device.

Note: When using a Cerbo GX use the BMS-CAN port for the battery and configure that port to 500 kbps, the Cerbo GX has RJ45 ports for both CANbus channels For LBSA batteries connected in parallel, either parallel port can be used to connect to the next battery.

With only one battery connected to the Cerbo GX, all Dip-switches must be in the off position. Systems with two batteries or more must follow the graph below to set master and slaves: If the DIP switches are not set correctly, the information pulled through the GX device will not be accurate.

Correct CAN Bus communication can be verified by observing whether the LBSA battery is presented in the GX-device list under the name "LBSA-BMS" or "LBSA SMART BATTERY".

When installing LBSA batteries in parallel, the batteries can be daisy chained up to two batteries. When installing more than two batteries in parallel, each battery must be individually wired to a central busbar to ensure equal current draw.

The MultiPlus or Quattro devices must be correctly configured for operation with the LBSA batteries.

The GX-device will use the battery monitor provided by the LBSA battery by default:

☛ Set the Low Shut-Down, Low Restart, and Low Pre-alarm voltages. The Low Pre-alarm only activates the low battery LED on the inverter and serves no other purpose in this setup. The Low Shut Down and Low Restart voltage settings are usually overridden by the commands from the LBSA SMART BMS but offer redundancy in instances of loss of communication and therefore should still be set correctly.

☛ Charger Settings Tab: Set Battery Type as "Lithium Iron Phosphate, LiFePo4 batteries".

☛ Set Charger Settings. The charge voltage values are overridden by the LBSA SMART BMS but should be set correctly regardless for redundancy. The charge current should be set according to the user's requirements but this value combined with all other charge sources cannot exceed the charge limit of the battery – it is possible to select "Limit Charge Current" on the GX-device as an additional measure to prevent the total system charge current from exceeding the charge capacity of the LBSA battery.

☛ When setting up the ESS Assistant select LiFePO4 battery and enter the Ah value for the LBSA battery (or the combination of LBSA batteries for a parallel battery system) as per the Ah rating provided in the LBSA specification sheet eg. LBSA 51.2V 104Ah 5.3kWh = 104Ah (or 100Ah if the device does not accept 104Ah). Important: After setting the battery capacity in the ESS Assistant DO NOT disable the Battery Monitor on the General tab as it clears the battery size from the ESS Assistant.

☛ Select – Do not change battery type

☛ Enter Dynamic Cut-off values as below

☛ Restart Offset = 2.0V

It is very important that the following settings are entered correctly for proper functioning of the LBSA SMART BMS communication interface:

☛ Settings → Services → Ve.CAN

Can port → CAN-bus Profile → CAN-bus BMS (500kbit/s)

☛ Confirm that the LBSA battery is showing in the device list (top of the menu structure) as per below:

☛ LBSA SMARTBMS → Parameters → Confirm that the Charge Current Limit and Discharge Current Limit are as per the LBSA specifications (will depend on how many batteries are connected).
Note: If the battery is fully charged the CCL may be reduced. Check that the voltage target is within the range 54.8V to 55.8V (Note: below about 95% SoC the value reflected should be 55.7 or 55.8V. For a fully charged battery this value should range from 55.0V to 55.8V depending on the state of balancing of the cells.)

☛ Confirm that DVCC is on at: Settings → DVCC

☛ Use "Keep Batteries Charged" or "Optimized with BatteryLife" if ESS is being used: Settings → ESS
BatteryLife is mandatory for LBSA batteries that are being cycled. This is to prevent long durations without the battery seeing 100% charge, and this in turn eliminates SoC drift issues that creep in after several days without the battery having reached 100% SoC.

Under battery preset, select "User Defined". Select and set the Absorption and Float voltages to 56.2V. Enable "expert mode" and set the Absorption curve to "fixed" and bring the Absorption time down to 1hr.

Adjust the maximum current on the MPPT's to ensure that the combined total charge power cannot exceed the maximum rated charge current for the LBSA SMART battery or LBSA's in the system.

Should any difficulties arise with the LBSA battery to Victron interface please contact sales@lbsa.co.za for assistance, or call the 24-hour support line at 061 476 4824.

This document is subject to change without notice. ©2023 Lithium Batteries SA, 54 Mimetes Rd, Denver, Johannesburg, 2011 South Africa