NO TE
● The components in the dotted box are optional.
● The inverter model is subject to change. The model information and device appearance
in this document are for reference only.
● In the networking, the inverter where the Dongle is installed is the master inverter, and
other inverters are slave inverters. Slave inverters can communicate with the Dongle
through cascading.
● When multiple inverters are cascaded, only one Smart Dongle or SmartLogger can be
connected to the RS485 communications link.
● The Smart Power Sensor connects to the RS485-2 and RS485_2 ports, or 485B2 and
485A2 ports on the master inverter. The RS485-1 and RS485_1 ports, or 485B1 and
485A1 ports are used for inverter cascading.
Table 2-9 Number of cascaded inverters
Limit
Actual Connection
Maximum Number of Devices
That Can Be Connected to the
Smart Dongle
abcd
Number of Slave Inverters
Number of Other Devices
(Such as Power Meters)
10
n ≤ 9
≤ 9 – n
Note a: You can view the number of devices that can be connected to the Smart Dongle from the
label on the external package.
Note b: If the number of inverters exceeds the limit, configure multiple Smart Dongles. The
installation and commissioning for each Smart Dongle are the same.
Note c: If cascaded inverters include a single-phase inverter or are connected to batteries, a
maximum of three inverters can be cascaded.
Note d: If RS485 communication is used and the device is connected to the RS485-2 and RS485_2
ports, or 485B2 and 485A2 ports on the master inverter, the device is not counted as a cascaded
device.
Table 2-10 Device description
Device
Description
Service
Owner
PV module
Purchased by the customer
Device
supplier
Inverter Master
inverter
● SUN2000-(2KTL-6KTL)-L1. Software version: SUN2000L
V200R001C00 or later. (all software versions of this
inverter model are supported.)
● SUN2000-(3KTL-20KTL)-M0
● SUN2000-(3KTL-12KTL)-M1
● SUN2000-(8KTL-20KTL)-M2
● SUN2000-(20KTL-40KTL)-M3
Huawei
FusionSolar Smart PV Management System
Connection
User Manual (Inv SDongleA)
2 Introduction to the Solution
Issue 02 (2021-11-25)
Copyright © Huawei Technologies Co., Ltd.
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