6
Lithium battery connection
If need to communicate with lithium battery BMS, the inverter protocol should have matched the BMS first.
There‟re two connectors on the lithium battery, RJ45 port of BMS and power cable. Please follow below steps to
implement lithium battery connection:
1.
Assemble battery ring terminal based on recommended battery cable and terminal size (recommended
standards are in the previous page) .
2.
Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are
tightened with torque of 2-3Nm. Make sure polarity at both the battery and the inverter/charge is correctly
connected and ring terminals are tightly screwed to the battery terminals
3.
Connect the end of RJ45 of battery to BMS communication port of inverter.
4.
The other end of RJ45 insert to battery comm port.
Note:
if choosing lithium battery, make sure to connect the BMS communication cable between the battery and
the inverter. You need to choose battery type as“lithium battery”.
Lithium battery communication and setting
In order to communicate with battery BMS, you should set the battery type to “LI” in Program 5. Then the LCD
will switch to Program 51, which is to set the protocol type. There are several protocols in the inverter. Please
get instruction from the supplier to choose which protocol to match the BMS.
1.
Connect the end of RJ45 of battery to BMS communication port of inverter
Make sure the lithium battery BMS port connects to the inverter is Pin to Pin. The BMS port supports
communication with BMS by RS485 protocol or CAN protocol.
The inverter BMS port pin and RS485 port pin assignment shown as below.
Pin number
BMS port
RS485 port
(for expansion)
1
RS485B
RS485B
2
RS485A
RS485A
3
--
--
4
CANH
--
5
CANL
--
6
--
--
7
--
--
8
--
--
2.
LCD setting
