Nibe EME 20 - Inverter and Accessory Connections; Modbus RTU Settings; Connection for S1155;S1255; Connection for SMO S40

PVI 30
FunctionConnection
RS485 + (B)1
RS485 + (B)2
RS485 - (A)3
RS485 - (A)4
Not used5
Not used6
Modbus RTU
Settings for other inverters supporting SunSpec with
Modbus RTU.
Baudrate: 9,600
Data bits: 8
Stop bits: 1
Parity: None
CONNECTION
S1155/S1255
This accessory contains a communication board (AA23)
that must be connected directly to the compatible main
product on the PCB (terminal block AA2-X30)).
The terminal block (AA23-X1:9-10) on the communication
board must be connected to the inverter.
If several accessories are to be connected, or are already
connected, the following cards must be connected in
series with the previous card.
4321
1110982 3
4 5
6
71
2 3
1
B
GND
12V
A
1
2
3
4
B
GND
A
AA23-X1
AA2-X30
AA5-X4
Accessories 2
Inverter
Compatible main product
EME 20
SMO S40
This accessory contains a communication board (AA23)
that must be connected directly to the compatible con-
trol module on the joint board (terminal block AA100-
X9)).
The terminal block (AA23-X1:9-10) on the communication
board must be connected to the inverter.
If several accessories are to be connected, or are already
connected, the following cards must be connected in
series with the previous card.
11
10
9
8
2 3 4 5 6 71
B
GND
12V
A
B
GND
A
1
2
3
4
21
10
987
AA100-X9
EME 20
Compatible control module
AA23-X1
Accessories 2
Inverter
AA5-X4
Connecting multiple inverters to one EME 20
Twelve inverters of the same make can be connected
in parallel to one EME 20.
21 21
21
111098
EME 20
Inverter 1 Inverter 2 Inverter 3
Connecting the energy meter
To connect the energy meter (optional), see the Installer
Manual for the main product.
DIP SWITCH
The DIP switch (S2) on the communication board (AA23).
Default OFF.
ON
1
2
3 4
6
5
87
EME 20 S-series | GB12
S