3Communication With Bms; Monitoring System Structure - Alpha ESS PWG2-50K User Manual

32 Chapter VII Communication Mode

7.1.3Communication with BMS

The inverter communicates with battery management unit (BMS) to monitor battery state information, give an
alarm and provide fault protection for battery according to the battery state and improve the safety of storage
battery. It supports CAN communication. In particular, the position number of CAN communication interface in the
monitoring panel is J23. It is led to terminal strip ports 7 and 8.
SD
Power
Management

7.2 Monitoring system structure

Background monitoring system can operate and control the storage inverter via computer network. This has
provided great convenience for learning about the operation of energy storing station. The overall structure
diagram for monitoring system is shown in Fig.7-5.
LAN J25
USB
CAN L
CAN H
Unit
CAN GND
485_3A
485_3B
485_3GND
Fig.7-4 Storage inverter and BMS communication
From
external
BMS
CAN
BMS