Figure 5-18 Connecting DC input power cables
If polarity of the DC input power cable is reversed and the DC switch is ON, do not
turn
o the DC switch immediately or unplug positive and negative connectors.
The device may be damaged if you do not follow the instruction. The caused
equipment damage is beyond the warranty scope. Wait until the solar irradiance
declines and the PV string current reduces to below 0.5 A, and then turn
o the
two DC switches and remove the positive and negative connectors. Correct the
string polarity before reconnecting the string to the SUN2000.
----End
5.6 Installing the Communications Cable
5.6.1 Communication Mode Description
RS485 Communication
The SUN2000 can connect to the SmartLogger over RS485 and to a PC through
the SmartLogger to establish communication. You can use the SUN2000 app,
SmartLogger, embedded WebUI, or the network management software (such as
the NetEco) on the PC to query information about the SUN2000, such as energy
yields, alarms, and running status.
● Figure 5-19 shows the communication mode for a single SUN2000.
SUN2000-(70KTL, 75KTL)-C1
User Manual 5 Electrical Connections
Issue 09 (2020-10-12) Copyright © Huawei Technologies Co., Ltd. 51
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