Growatt SPA 1000TL BL, Installation & Operation Manual

21

22

5.4.6 Connection of communication terminal for lithium battery(RS485)

5.4.7 Connection of communication terminal for lithium battery(CAN)

When using lithium batteries which need to connect BMS system of the battery, connect 

lithium battery terminal (RJ45) steps as follows:

•Unscrew the swivel nut from the cable gland.

•Thread the swivel nut over the “RS485” cable.

•Press the cable support sleeve out of the cable gland.

•Remove the filler plug from the cable support sleeve.

•Route the “RS485” cable through an opening in the cable support sleeve.

•Thread the “RS485” cable through the cable gland.

•Insert  the  RJ45  plug  of  the  network  cable  into  the  “RS485”  pin  connector  on  the 

inverter until it snaps into place.

•If  no  other  cables  need  to  be  installed,  lock  the  waterproof  cover  to  the  SPA  with 

screws.

•Screw the swivel nut onto the waterproof cover.

RS 485

Fig 5.29

Fig 5.30

Fig 5.31

Fig 5.32

NOTICE:

NOTICE:

•
please skip this step to 5.4.5. 
•The CAN battery communication and RS485 battery communication can't be installed at 
same  time,  please  select  the  correct  communication  method  according  to  the  battery 
manual.
•If the cable such as “RS485” cable or “CAN” cable is not used, please do not remove the 
filler plug from the cable support sleeve.

If you are using a lead-acid battery, you do not need to install this communication cable, 

When using CAN communication with lithium batteries, connect lithium battery terminal 

(RJ45) steps as follows:
•Unscrew the swivel nut from the cable gland.

•Thread the swivel nut over the “CAN” cable.

•Press the cable support sleeve out of the cable gland.
•Remove the filler plug from the cable support sleeve.
•Route the “CAN” cable through an opening in the cable support sleeve.
•Thread the “CAN” cable through the cable gland.

•Insert the RJ45 plug of the network cable into the “CAN” pin connector on the inverter 
until it snaps into place.

•If no other cables need to be installed, lock the waterproof cover to the inverter with 
screws.
•Screw the swivel nut onto the waterproof cover.

CAN

If you are using a lead-acid battery, you do not need to install this communication cable.

•The CAN battery communication and RS485 battery communication can't be installed 

at same time, please select the correct communication method according to the battery 

manual.

•If the cable such as “RS485” cable or “CAN” cable is not used, please do not remove 

the filler plug from the cable support sleeve.