Huawei SUN2000-115KTL-M2 - Page 77

Port Pin Denition Pin Denition Description
RS485-2 7 RS485A, RS485
dierential signal+
8 RS485B, RS485
dierential signal–
Used for connecting
to an RS485 slave
device.
● In the scenario of
SDongle
networking or a
single solar
inverter, the
RS485-2 port is
connected to a
power meter to
collect
information about
power at the grid-
tied point for grid-
tied point power
control.
● In the scenario of
intelligent support
tracking control,
the RS485-2 port
is connected to
the support
tracking system to
collect support
information.
Connecting the RS485 Communications Cables
When routing the communications cable, separate it from power cables to prevent
communication from being aected. Connect the shield layer to the PE point. This
section describes how to connect three communications cables.
SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual 5 Electrical Connections
Issue 07 (2023-04-30) Copyright © Huawei Technologies Co., Ltd. 70