Instructions

Intesis
TM
INMBSDAI001R000
User’s Manual r3.8 EN
© HMS Industrial Networks S.L.U. - All rights reserved
This information is subject to change without notice
URL https://www.intesis.com
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Connection to
P1P2 bus. Two
wire cable.
90 mm
3.5”
53 mm / 2.1”
90 mm
3.5”
53 mm / 2.1”
2. Connection
The interface comes with a plug-in terminal block of 2 poles to establish direct connection with
the AC indoor unit. It comes as well with a plug-in terminal block of 2 poles to establish direct
connection with the Modbus RTU EIA-485 network.
2.1 Connect to the AC indoor unit
The INMBSDAI001R000 connects directly to the Daikin P1P2 Bus, which is not provided within
the interface. Depending on which controllers are available, the recommended connection’
methods are the following ones (details in Figure 2. 1):
• Wired remote control available. Connect the gateway as Slave in parallel with the wired
remote controllers (Controller acts as Master).
• Infrared remote control available. Connect the gateway as Master in parallel with the
infrared remote controller (Infrared Remote Control as Slave).
• No remote control available Connect the gateway directly to the P1P2 bus of the indoor
unit as Master when there is no Daikin Remote Controller.
Maximum P1 P2 bus length is 500 meters / 1,640.42 ft . The bus has no polarity sensitivity.
Important: If a wired remote controller of the AC manufacturer is connected in the same bus,
communication may shut down.
Max. 500m / 1,640.42 ft
Max. 500m / 1,640.42 ft
Figure 2. 1 INMBSDAI001R000 Connection diagrams
AC Indoor Unit
MODBUS
RTU
EIA-485
Bus
EIA485
A+ B-
P1 P2
AC Unit
For wall mounting
extract the upper
and lower staples
until you hear the
"click".
P1 P2
DAIKIN
Internal
electronic
control
board
Remote Controller
P2
P1
MODBUS RTU
EIA-485
Bus
EIA485
A+ B-
P1 P2
AC Unit
AC Indoor Unit
Internal
electronic
control
board
Connection to P1P2
bus. Two wire cable.
P2
P1