120Ω termination
resistance
NOTICE NOTICE
−
The length of communication line is not more than 1000m.
−
When connecting multiple inverters, the number of devices connected by
one daisy chain is less than 30.
−
In order for CH1000 to correctly collect inverter data, the inverter need to
be updated to the latest version, as confirmed by installation and af-
ter-sales personnel.
−
RS485 communication line between CH1000 and inverter and RS485
communication line between inverters should use shielded twisted pair
cable.
−
When arranging the alignment of the communication line, please pay
attention to separate the alignment of the communication line from the
power line, and the alignment should avoid the big interference source, so
as to avoid the signal being interfered with and causing the communica-
tion interruption.
−
Please set the baud rate of all inverters to 9600.
5. 5. Connect the meter and CT
Please use shielded twisted pair cable to connect the free RS485A and RS485B
of CH1000 to the pins 24 (RS485A) and 25 (RS485B) of the meter respectively.
CT should be connected to the grid connection point of all inverters and other
electrical device and loads, with the direction pointing to the power grid. The
cable connection can refer to the following table.
Installation and User Manual 25/92
Cable Connections
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