5.2.1 MBUS Communication
If MBUS is selected, no RS485 communications cable is required to connect to the
SUN2000, but the AC power cable needs to connect to a SmartLogger that
supports MBUS.
The MBUS communication mode is only applicable to medium-voltage grid
connection scenarios and non-low-voltage public grid connection scenarios
(industrial environment).
Figure 5-1 Network Application
indicates a power cable; indicates the power ow direction; indicates a signal cable;
indicates the signal ow.
(A) PV string
(B) SUN2000 (C) AC combiner box
(D) Step-up transformer (E) Power grid (F) SmartLogger
(G) Management system
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
5 Electrical Connections
Issue 11 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 41
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