SAJ H2-5K-T2 - Connecting the BMS; Installing the Communication Module

Hybrid Solar Inverter User Manual
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4.5.2. Installing the Communication Module
About this task
H2 series hybrid inverter has an RS232 communication port integrated. For the USB port with the Wi-Fi module,
refer to the WI-Fi module user manual.
Pin
Name
Description
1
+7V
Power supply
2
RS-232 TX
To send data
3
RS-232 RX
To receive data
4
GND
Grounding wire
Procedure
1. Open the cover on the 4G/WIFI port.
2. Insert the communication module to the 4G/WIFI port. Secure the module by rotating the nut.
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4.6. Connecting the BMS
About this task
For connections to lithium batteries, no breaker is required between the batteries and the inverter.
Prerequisite
⚫ The battery management system (BMS) (including the battery control unit and battery packs) has been
installed.
⚫ The BMS is powered off.
M4*10
0.6-0.8 N·m