SmartACU2000D Smart Array Controller
User Manual (with No PID Module)
2 Overview
Issue 01 (2020-02-14)
Copyright © Huawei Technologies Co., Ltd.
18
2.5 Working Principles
Figure 2-9
Electrical conceptual diagram
The SACU communicates with devices in a PV array over RS485, MBUS, or Ethernet.
When the SACU communicates with solar inverters over MBUS, log in to the embedded WebUI of the
SmartLogger3000, choose
Monitoring
>
MBUS
>
Networking Settings
, and set
Networking
to
Enable
(default value). When the SACU communicates with the solar inverters over RS485, set
Networking
to
Disable
. For details, see the
SmartLogger3000 User Manual
.
RS485 communication mode