SUNFLX SEI-8K-SP - BMS and Communication Settings

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Batt. Recharging voltage
52V default
Inverter stops charging when the battery is full. Inverter
resumes charging when the battery voltage below this value.
Setting range: 44V~54V.
Batt Chg Temp
Compensation
Disable default
Disable the battery temp compensation
Enable
Enable the battery temp compensation
BMS comm. enable
SLA
RS485 port for PC or telecommunication control
485 default
RS485 port for BMS communication.
CAN
RS485 port for CAN communication.
BMS comm. protocol
When the parameter’BMS comm. enable’ setting item =485, you can choose to match
the battery manufacturer's BMS protocol to communicate with BMS for the lithium battery
protection.
WOW default
PAC=PACE，RDA=Ritar，AOG=ALLGRAND BATTERY，
OLT=OLITER，HWD=SUNWODA, DAQ=DAKING,
WOW=SRNE, PYL=PYLONTECH，UOL=WEILAN
POW=POWMR
BMS chg. curr. limit
mode
HMI setting
This mode only takes effect when the inverter communicates
successfully with the Li-ion battery BMS (Battery Management
System); the following options are available for setting.
[HMI setting] When this option is selected, the inverter
charging current uses the value set in item’
Max Charge
Current’; at this time, item ’Max Charge Current’ can be
set to any value from 0 to the maximum charging current.
[BMS protocol] When this option is selected, the charging
limit current transmitted by the BMS and the value set
in ’
Max Charge Current’ will be compared, and the smaller
value will be used as the current charging current; at this time,
the charging current that can be set in’
Max Charge
Current
’cannot be greater than the charging limits the
current value of the BMS.
[Inverter logic] When this option is selected, the internal
current limit value of the inverter will be compared with the
value set in [07], and the smaller value will be taken as the
current charging current; at this time, the charging current
that can be set in [07] cannot be greater than the internal
current limit value of the inverter, and the logic for
determining the internal current limit value of the inverter is
as follows
1. when the battery SOC>98%, the charging current is reduced
to 1/16 of the inverter's rated charging current value
2. when the battery SOC is >95%, the charging current is
reduced to 1/8 of the inverter's rated charging current
3. When the battery SOC>90%, the charging current is
reduced to 1/4 of the rated charging current of the inverter
4. When battery SOC>85%, the charging current is reduced to
1/2 of the inverter's rated charging current
BMS protocol default
Inverter logic
Turn To Mains Volt
43.6V default
When output source priority is Solar first or battery
first
,output source will switch to utility from battery when the
battery voltage below the preset value. Setting range:40~60V