MH-RC-MBS-1
User’s Manual r6.
3 EN
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This information is subject to change without notice
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®
is a registered trademark of Intesis Software SLU
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5/23
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 MH-RC-MBS-1 connects directly to the Mitsubishi Heavy Industries XY 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 controller available
. Connect the gateway as Slave in parallel with the
wired remote controllers (Controller acts as Master).
•
No remote controller available
Connect the gateway directly to the XY bus of the
indoor unit as Master when there is no Mitsubishi Heavy Industries Remote Controller.
Maximum XY bus length is 600 m / 1,968.5 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.
IntesisBox
®
MH-RC-MBS-1
MODBUS RTU
EIA-485
Bus
EIA485
A+ B-
X Y
AC Unit
AC Indoor Unit
Max. 600 m / 1,968.5 ft
Connection to XY bus.
Two wire cable.
Y
X
AC Indoor Unit
IntesisBox
®
MH-RC-MBS-1
MODBUS RTU
EIA-485
Bus
EIA485
A+ B-
X Y
AC Unit
53 mm
/ 2.1”
For wall mounting
extract the upper
and down staples
until you hear the
"click".
X Y
MHI
Max. 600 m / 1,968.5 ft
Remote Controller
Y
X
90 mm
/ 3.5”
Connection to XY bus.
Two wire cable.
53 mm /
2.1”
90 mm / 3.5”
Figure 2. 1
MH-RC-MBS-1 connection diagram
Internal
electronic
control
board
Internal
electronic
control
board