APM PV17KM3TL, User Manual

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4.7.1.1 Communication Connection of Single Solar Inverter
The communication connection of a single solar inverter is illustrated in the diagram below.
Connect the inverter's RS485 communication port with the RS485-R232 converter, and then
connect the RS232 with a PC.
RS485-232 Converter RS232 PC
T/R+
T/R-
GND
VCC
RS485B
RS485A
If the user is required to monitor the operating status of multiple solar inverters in a PV power
generation system, please refer to the connection scheme of monitoring system as described
below.
The solar inverter is communicated with a PC through the RS485-RS232 converter, and mon-
itored a single inverter or multiple inverters through a PV system monitoring software.
4.7.1.2 Communication Connection of Multiple Inverter
T/R+
T/R-
GND
VCC
RS485B
RS485A
120Ω
RS485B
RS485A
RS485-232 Converter RS232 PC
+
-
+
-
DC Switch
ON
OFF
+
-
+
-
Smart MTL Series 3-Phase Inverter User Manual--Installation
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PROFESSIONAL INNOVATIVE BRANDING SERVICE