Sungrow SG125HV-30, User Manual

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User Manual 5 Electrical Connection
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Inverter1 Inverter2
Inverter N
P
a
s
s
i
v
e
s
w
i
t
c
h
DIN1 PGND DIN1 PGND
LOCAL STOP
DIN1 PGND DIN1 PGND
LOCAL STOP
DIN1 PGND DIN1 PGND
LOCAL STOP
Fig. 5-12 Multiple inverters connected in a daisy chain topology

Multiple inverter Master-slave mode connection in an RS485 daisy chain
Inverter1 Inverter2
Inverter N
RS485 connections
P
a
s
s
i
v
e
s
w
i
t
c
h
Master inverter Slave inverter Slave inverter
IN OUT
IN OUT
OUT
Data Logger
RS485
PC
RS232
DIN1 PGND DIN1 PGND
LOCAL STOP
DIN1 PGND DIN1 PGND
LOCAL STOP
DIN1 PGND DIN1 PGND
LOCAL STOP
Fig. 5-13 Multiple inverter Master-slave mode connection
The inverter with a direct connection to the data collector is
automatically set to the master inverter. It sends Stop instructions to
other inverters via RS485 communications.