44
table 6-2 The label description of COM terminal
No. Label
Description
1
Meter (A2, B2)
(1)
• Connect to the Smart Energy Meter. (If installing a
single inverter or if installing the master inverter in a
string of parallel inverters.)
• Connect to the Sungrow AC011E-01 EV Charger (If
the system contains the LG Chem Li-ion battery
while it also needs to connect to the EV charger.)
• Enable the communication between inverters in par-
allel. (If installing a slave inverter in a string of paral-
lel inverters.)
2
RS485 (A1, B1)
(1)
(2)
• Connect to the LG Chem Li-ion battery，to be used
together with Enable signal
• Connect to the Sungrow AC011E-01 EV Charger
(The default charger interface)
• Connect to an external device to receive the com-
mand to shut down the inverter remotely (Italy only)
or enable the communication between inverters in
parallel. (If installing a master inverter in a string of
parallel inverters.)
3 BMS/CAN
To enable the communication between the inverter and
the Li-ion battery
4 Enable
Connect to the LG Chem Li-ion battery，use with
RS485 terminal
5 DI/DRM
• "AU"/"NZ": Demand response enabling device
(DRED)
• "IT": interface protection system (SPI)
• "DE": Ripple Control Receiver (RCR)
6 DO
• Connect to an external light indicator and/or buzzer
to signal an alarm.
• Connect to home load (such as SG Ready Heat
Pump) for power management.
(1) When the inverter is connected to a third-party monitoring device, please confirm which
communication interface is used, and whether it will cause loss of certain functions of the
inverter.
(2) When RS485 (A1, B1) is used for parallel connection in the master inverter, the LG Chem
battery (that uses RS485 for communication) cannot be used with the master inverter. It can
still be used with the slave inverter.
6 Electrical Connection User Manual
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