Epever UP2000-HM6021 - Page 49

47
No.
Condition
Control strategy
4
The BMS sends an exit
charge command.
The inverter/charger exits the battery charging and resumes
normal working mode.
5
BMS prohibits discharge
(includes over-
temperature, over
discharge, cell low
voltage etc.)
 The PV supplies power to loads when the PV is available.
 The inverter/charger automatically switches to the utility mode
to supply power to loads when there is no PV.
Note: When the BMS resumes normal discharge, the
previous working mode is restored.
6
Communication fails.
The inverter/charger automatically enters the no-battery mode,
and the LCD display the battery voltages set by the customer.
Note: Under the no-battery mode, the inverter/charger does
not charge or discharge the battery in any way.
7
Read the charge voltage
limit and the discharge
voltage limit from the
BMS

The battery voltages are transformed per the Table (2): Battery
voltage transformation. The transformed voltages are adopted
to control the charging or discharging, and displayed on the local
LCD.
Note: The BMS communication is normal, while the charge
voltage limit and the discharge voltage limit cannot be read
from the BMS successfully, the inverter/charger will charge
or discharge per the battery voltages set by the customer.
8
Read the charge current
limit and the discharge
current limit from the
BMS
The inverter/charger limits the device charge/discharge current
per the read value.
CAUTION
 When adopting the PYLONTECH lithium battery protocol, the battery mode (BTS)
cannot be set.
 When the customer sets the lithium battery protocol ("PRO" parameter) to the non-
PYLONTECH protocol, the inverter/charger exits the above control strategy and
works per the customer setting.
 Adopt the non-PYLONTECH protocol and disable the BMS function (namely, item 41
"BEN" is set to "OFF"), the inverter/charger exits the above control strategy and
works per the customer setting.
 For PYLONTECH lithium battery, refer to its battery specification for the charge voltage limit
and the discharge voltage limit. Whether other lithium batteries are equipped with the two limit
voltage, please refer to detail battery specification.