Connecting The Communications Cable; Communication Mode Description - Huawei SUN2000-45KTL-US-HV-D0 User Manual

SUN2000-45KTL-US-HV-D0
User Manual
1. After the positive and negative connectors snap into place, pull test to the DC input cables
2. Only after at least one PV string correctly connects to the MPPT1 circuit, the SUN2000
Figure 6-18 Connecting DC input power cables
If polarity of the DC input power cable is reversed and the DC switch is ON, do not turn 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

6.6 Connecting the Communications Cable

6.6.1 Communication Mode Description

RS485 Communication
The SUN2000 can connect to the SmartLogger over RS485 or to a PC through the
SmartLogger to implement communication. You can use the SUN2000 APP, SmartLogger,
Issue 04 (2018-06-01)
is recommended.
enables the DC input detection function. Therefore, you are required to connect DC input
power cables to the MPPT1 circuit first.
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