6.6 Meter Connection
Note
！
It is necessary to connect meter to inverter otherwise inverter will
shutdown with a “Meter fault” alert.
The meter communication only works when meter is compatible
with the inverter.
Meter connection diagram
Ø
Communication interface bewteen inverter and meter is RS485 with Green terminal.
Meter Interface
Ø
Meter Connection Steps:
Ø
Step3.
Then insert RS485A/B wires into the correct meter terminal. Then tighten
the corresponding turnbuckle with a screwdriver. (Torque: 0.2±0.1Nm)
Step4
. Insert connector into Meter terminal inside of the inverter and tighten the
screws with a slotted screwdriver.
(Torque:0
.
4
±
0
.
1Nm)
Step1.
Disassemble the GEN/Meter/BMS cable gland.
( Torque:2
±
0
.
2Nm)
Step2.
Prepare a communication cable(without sheath) and insert the commu-
nication cable through the cable nut.
Electrical Connection
Electrical Connection
36
37
Meter is used for monitoring the power usage for entire house, at the meantime,
inverter will also need the data from Meter to achieve the Export Control Function.
485B
485A
Step1
Step2
X3-Retro Fit can work with a few different brands of meters, therefore please kindly
note here we are going to introduce the meter connection on the inverter side
only. For the connection on meter side, please refer to the specified meter manual.
D
R
M
/M
e
te
r
Step3
Step4
Electrical
grid
Home Electric meter,
Three phase
meter
Load
Meter connection(RS485)
L
N
COM
GEN_B
RES_A
Shutdown
+3.3V
GND
485A
485B
1
2
3
4
5
6
7
8
EPS
Note: 1 and 2 are the function interface of electricity meter; 3 and 4 are intelligent switch interfaces;
5 and 6 are parallel interface; 7 and 8 are reserved interfaces.
Torque:0
.
4
±
0
.
1Nm
Torque:0
.
2
±
0
.
1Nm
Torque:2
±
0
.
1Nm
485B
485A
