Figure 2-3 Networking application - Inverter cascading scenario (optional in
dashed boxes)
● indicates a power cable, indicates a signal cable, indicates wireless
communication.
● If the inverter is connected to the FusionSolar app over its built-in WiFi network, only
local commissioning can be performed.
● In the RS485 cascading communication networking, the master inverter model is
SUN2000-(3KTL-20KTL)-M2 and SUN2000-(3KTL-20KTL)-M0, and the slave inverter
model can be SUN2000-(3KTL-20KTL)-M2, SUN2000-(3KTL-20KTL)-M0,
SUN2000-50KTL/60KTL/65KTL-M0, SUN2000-29.9KTL/36KTL, or SUN2000-33KTL-A.
(A) PV string
(B) DC switch (C) SUN2000
(D) AC switch (E) ACDU (F) Smart Power Sensor
(G) Power grid (H) 4G Smart Dongle (I) WLAN-FE Smart
Dongle
(J) Router (K) FusionSolar
management system
(L) FusionSolar APP
(M) Load (N) Ripple Control
Device
(O) Rapid shutdown
switch
(P) Smart PV optimizer
SUN2000-(8KTL-20KTL)-M2
User Manual 2 Overview
Issue 11 (2023-02-07) Copyright © Huawei Technologies Co., Ltd. 15
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