6.4.2.2 Parallel connection
The series inverter provides the parallel connection function when connected
with Datahub, which could support at most 60 inverters to parallel in one
system and can control zero injection to the grid with a meter installed in the
main circuit. In this parallel system, the Datahub will be the master of the
system, and all the inverters are the slaves. The Datahub can communicate
with all the slave inverters.
Diagram: Parallel system with Datahub
Note!
Before operation, please make sure that the inverters meet the
following conditions:
1. All the inverters are recommended to be the same series;
2. The firmware version of all inverters shall be the same.
Otherwise, the parallel function cannot be used.
Note!
The series inverter cannot work in parallel system without
Datahub.
Note!
Before connecting the Datahub to the parallel system, please
check that the inverters' settings meet the following
conditions:
1. The “Modbus Fuction” should be “COM485”.
2. The “ParallelSetting” should be “Disable”.
3. The addresses of all the inverters in the “RS485 CommAddr”
should be different. Otherwise, please reset the RS485
communication addresses.
a) Prepare several RJ45 splitters as needed.
b) Connect on end of an RS485 communication cable with Datahub, and the
other end with one of the slave inverters via a splitter.
c) Connect all the slave inverters with each other with RS485 cables via
splitters.
d) Connect the meter with the Datahub and the mains.
Ÿ Wiring operation
Note!
The inverter connected with the Datahub should not enable
the “ParallelSetting”.
There is no need to set the “ParallelSetting” on the inverters,
the parallel system with Datahub will start automatically.
For the details, please refer to the user manual of Datahub.
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Datahub
~
Grid
Slave 2
Slave N
Slave 1
RS485 cable
RS485 cable
AC AC AC
Meter cable
Electrical Connections Electrical Connections
30 31
Meter
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