User Manual
5 Electrical Connection
41
5.7.2 RS485 Communication Connection
If the communication system is equipped with SolarInfo Logger,
inverters may be remotely monitored via SolarInfo Bank.
SolarInfo logger and RS485-232 converter are optional parts and can be
ordered from SUNGROW.
For Single Inverter
Where there is only one inverter, Network cable with RJ45 plugs enables connection
between the inverter and PC.
Fig. 5-7
Single inverter RS485 communication connection
For Multiple Inverters
Where there is more than one inverter, all inverters can be connected in a “daisy
chain”. The very first and last inverters in the chain must be terminated with a
resistor of 120Ω. The shielding layer of network cable should be single-point
grounded.
The maximum number of inverters connected in the daisy chain depends on
converter, data logging device and other factors. Please refer to converter’s or data
logging device’s manual to obtain the limit.
