Nibe MODBUS 40 Installateurhandbuch Seite 11

F370/F470/F730/F750
Terminal block X1 on the SMS board (AA9) in MOD-
BUS 40 is connected to terminal block X4:9-12 on the
input board (AA3) in the heat pump.
AA3-X4
VVM 225/VVM 310/VVM 320/VVM 325/VVM 500
Terminal block X1 on the SMS board (AA9) in MOD-
BUS 40 is connected to terminal block X4:9-12 on the
input board (AA3) in the indoor module.
AA3-X4
SMO 40
Terminal block X1 on the SMS board (AA9) in MOD-
BUS 40 is connected to terminal block X4:9-12 on the
input board (AA3) in the control module.
AA3-X4
LEK
MODBUS 40 | GB
AA3-X4
7 8 9 10 11 12
Heat pump
MODBUS 40
AA9-X1
12V A B GND
AA3-X4
7 8 9 10 11 12
Indoor module
MODBUS 40
AA9-X1
12V A B GND
AA3-X4
7 8 9 10 11 12
Control module
MODBUS 40
AA9-X1
12V A
B GND
MODBUS 40 together with SMS 40 or RMU 40
If MODBUS 40 is to be connected with SMS 40/RMU 40,,
MODBUS 40 must be the first unit connected to the cli-
Tillbehör_singular = translation hint, 2 =
mate unit's terminal block.
value
Connecting to and disconnecting from MODBUS 40 oc-
curs in terminal AA9:X1.
No more than two units can be connected to the climate
unit.
Tillbehör_singular = translation hint, 1&2 =
value
RMU 40/ MODBUS 40/
SMS 40 SMS 40
MODBUS 40/SMS 40
SMS 40
GND
B
A
+12V
RMU 40/
SMS 40
SMS 40
GND
B
A
+12V
Connecting to Modbus-master
The external Modbus master is connected to terminal
block X2 on the Modbus board (AA9).
NOTE
MODBUS 40 uses the communications standard
RS485.
Connect the master with a cable according to
the recommendations for RS485.
MODBUS 40
MODBUS 40
GND
_
B
A
+
AA9-X2
Input board
main product
Input circuit board
EXTERNT
External
Modbus master
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