Instructions

Intesis
TM
INMBSSAM001R000
User’s Manual r1.3 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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2. Connection
The interface comes with 2 plug-in terminal blocks of 2 poles each one, 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 INMBSSAM001R000 connects directly to the Samsung F3F4 V1V2 bus. This bus 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 (Remote Controller acts as Master).
• No remote control available Connect the gateway directly to the F3F4 V1V2 bus of the
indoor unit as Master when there is no Samsung Remote Controller.
Maximum F3F4 V1V2 bus length is 100 m / 328.08 ft. The communication F3F4 V1V2 bus has
polarity sensitivity.
Important: If a wired remote controller of the AC manufacturer is connected in the same bus,
communication may shut down.
90 mm / 3.5”
MODBUS RTU
EIA-485
Bus
EIA485
A+ B-
F3 F4 V1 V2
AC Unit Power
53 mm / 2.1”
For wall mounting
extract the upper
and down staples
until you hear the
"click".
F3 F4 V1V2
AC Indoor Unit
(It is not mandatory to have it in the network)
Max. 100 m / 328.08 ft
Connection to F3F4
V1V2 bus.
Four wire cable.
Remote Controller
Samsung
F3
F4
V1
V2
Internal
electronic
control board
MODBUS RTU
EIA-485
Bus
EIA485
A+ B-
F3 F4 V1 V2
AC Unit Power
AC Indoor Unit
Connection to F3F4
V1V2 bus.
Four wire cable.
F3
F4
V1
V2
Internal
electronic
control board
Max. 100 m / 328.08 ft
53 mm / 2.1”
90 mm / 3.5”
Figure 2. 1 INMBSSAM001R000 connection diagram