Installing The Communications Cable; Communication Mode Description - Huawei SUN2000 Series User Manual

SUN2000-(90KTL-100KTL) Series
User Manual
If polarity of the DC input power cable is reversed and the DC switch is ON, do not turn off
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 off 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.
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Figure 5-17 shows the communication mode for a single SUN2000.
Figure 5-18 Communication mode for a single SUN2000
Figure 5-18 shows the communication mode for multiple SUN2000s.
If multiple SUN2000s are used, connect all the SUN2000s in daisy chain mode over an
RS485 communications cable.
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