User Manual

B4850 ESS Unit User Manual
7
Table 2-3 Interface Definition
Item
Name
Definition
1
Power switch
OFF/ON,
must be in the "ON" state when in use
2
Ground
connection point
Shell ground connection
3
Positive socket
Battery output positive or parallel positive line
4
Negative socket
Battery output negative or parallel negative line
5
SW (battery
wake/sleep
switch)
When the "OFF/ON" switch button is in the ON state, press
and hold this button for 3 seconds to put the battery into the
power-on or sleep state.If you need to turn it off, hold down
SW 3S and power switch to “OFF”.
6
SOC
The number of green lights on shows the remaining battery
power. See Table 2-3 for details.
7
ALM
Red light flashing when an alarm occurs, red light always on
during protection status. After the condition of trigger
protection is released, it can be automatically closed.
8
RUN
Green light flashing during standby and charging mode.
Green light always on when discharging.
9
CAN/485
Communication port, support CAN/ RS485 communication
(factory default CAN communication)
10
DRY CONTACT
/
11
ADD
DIP switch
2.3.1 DIP switch definition and description
Table 2-4 Interface Definition
DIP switch position (master communication protocol and baud rate selection)
#1
#2
#3
#4
Define different protocols；
Distinguish between master and slave
Baud rate selection
OFF：CAN: 500K,485: 9600
ON
：
CAN: 250K,485: 115200
DIP switch description:
When the batteries are connected in parallel, the master communicates with the slaves through
the CAN interface. The master summarizes the information of the entire battery system and
communicates with the inverter through CAN or 485.