4. Installation
4. Installation
24
25
4.5.2
Connecting the
RS485 Communication Cable
For one battery module:
1) There is a protection cover for the RS485 connector. Unscrew the cover and plug
one end of the RS485 communication cable to the RS485 connector. Tighten the
plastic screw nut which is set on the cable with a rotation wrench.
2) Connect the RS485 communication cable (E) from the left side of the BMS (III) to
the RS485 I communication port (II’) that is on the left side of the battery
module. The communication ports are marked in the following figures.
For 2
-
3 battery modules:
1) There is a protection cover for the RS485 connector.
Unscrew the cover and plug
one end of the RS485 communication cable to the RS485 connector. Tighten the
plastic screw nut which is set on the cable with a rotation wrench.
2) Connect the RS485 communication cable (E) from the left side of the BMS (III) to
the RS485 I communication port (II’) that is on the left side of the battery
module. The communication ports are marked in the figures below.
3) Connect the
RS485 II (IV’) of the
upper battery module on the right side to
RS485 I (II’)
of the follow-up battery module.
Sequence
1
2
3
4
5
6
7
8
RS485I
RS485II
VCC_485
VCC_485
GND_485
GND_485
B2
B2
N-
N-
P+
P+
A2
A2
VCC_485_2
VCC_485_2
GND_485
GND_485
The wire order of the communication cable is as follows:
1 2 3 4 5 6 7 8
1) Orange stripes on white
2) Orange
3) Green stripes on white
4) Blue
5) Blue stripes on white
6) Green
7) Brown stripes on white
8) Brown
4.5.3
Connecting the CAN Communication Cable
It is required for the BMS to communicate with the inverter for proper operation.
Note that the CAN communication cable is shielded with steel tubes.
Refer to the installation diagram in section 4.5.1 on page 20.
2) After the charging cables and CAN
communication cable are correctly connected and
placed through the conduit, lock the terminal
box-small (J) and terminal box cover (K) with M4
screws (N).
1) Connect one end of the CAN communication
cable (D) to the CAN connector (VII) marked in red.
Tighten the cover set on the cable with a rotation
wrench (G).
The wire order of the communication cable is the same as the
RS485
Sequence
1
2
3
4
5
6
7
8
CAN
/
/
/
CAN_H CAN_L
/
A1
B1
3) Turn off the inverter AC switch, position the other
end of the CAN communication cable (D) through
the conduit and insert it into the BMS port on the
inverter. Assemble the cable gland and screw
the cable nut.
CAN
BAT
+
-
INSTALLATION AND OPERATION MANUAL LITHIUM-ION BATTERY – Q CELLS
INSTALLATION AND OPERATION MANUAL LITHIUM-ION BATTERY – Q CELLS
communication
cable.
