LB51100 Installation and User Manual
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Shenzhen Olipower Energy & Automation Technology., Ltd
5.4.3
Multiple parallel battery boxes connected with inverter
5.4.3.1
The steps of parallel connection of multiple battery boxes
Step 1: Every single battery is started and the total voltage of the battery is measured with a multimeter. It is
confirmed that the difference between the total voltage of each battery is not more than 2V, and then the following
work is carried out.
Step 2: Connect the battery box communication line, set the DIP switch (the connection of the communication line
and the setting of the dial code switch reference 5.4.3.3 description). Start Master battery box, then slave battery
box 1, and the slave battery box 2,3,… observe the state of the alarm light from the battery box. If the fault light is
on, please check whether the connection is tight enough and the switch setting is right. If the fault lights are not
bright, follow up.
Step 3: First turn off all the battery boxes, then connect the battery box power cables (the connection of power cable
to 5.4.3.4 description). After the connection is completed, start the master battery box, slave battery box 1 and slave
battery box 2 (if have slave battery box 2).
Step 4: After the battery is completed in parallel, it is suggested that you wait a few minutes to connect the inverter
later.
5.4.3.2
The connection between the parallel battery box and the inverter
Step 1: After the battery box is properly parallel, turn off all the battery boxes.
Step 2: Connect the CAN communication line between the battery box main station and the inverter (the
connection of the communication line is described by 5.4.3.3), then connect the power cable between the parallel
battery boxes and the inverter (the connection of the power cable is described by 5.4.3.4).
Step 3: Start the main station, the slave station 1, and the slave station 2 (if have slave station 2).
5.4.3.3
System communication line connection
Information:
When multiple battery boxes are used in parallel, the parallel battery box and
inverter can only communicate through CAN interface, and the communication between the battery box through
LINK.
Attention: The following figure is only the communication line connection diagram.Specific interfaces must be
compared to physical objects.
It is an Australia installation standard requirement AS/NZS 5139 that an overcurrent protection and isolation
device that operates both positive and negative conductors is required between battery and inverter and also
between parallel batteries.
