User Manual
49
Note:
Please choose the appropriate CT size according to your needs.
Notice:
CT installation directions should strictly follow the instructions in the user manual. Otherwise, the
inverter may not be working.
The CT has to correspond with the port in the Meter, and the connection between the CT and the Meter
needs to be reliable. Otherwise, the CT measurement accuracy may be affected.
4.7 Communication connection
All communication ports are in the multifunction communication Port at the bottom of the inverter, including the Meter
port, CAN port, BMS port, EMS port, RLYOUT port, and DRED port.
T
erminating
resis
tor
f
or
CAN(
Pa
r
allel)
T
erminating
resis
tor
f
or
RS485(EMS)
The definition of Meter terminals as shown in the table below:
No. Definition Function
5
6
7
8
9
10
1
2
3
4
12
13
RS485
L1-S1
L1-S2
L2-S1
L2-S2
L3-S1
L3-S2
L1
L2
L3
N
L
N
RS485
To detect the CT current and direction
L1/L2/L3/N connect to grid to detect power
grid voltage
Power supplied from grid
Communicate with inverter
