Connection Procedure For The Ac Unit; Connection Procedure For Modbus - HMS Networks Intesis IN776MHI00 O000 Series User Manual

Mitsubishi Heavy Industries VRF with KNX, Serial and IP support
IMPORTANT
• When using a DC power supply: Respect the polarity labeled on the power connector for the
positive and negative wires.
• When using an AC power supply: Ensure the same power supply is not powering any other
device.
IMPORTANT
• Use SELV-rated NEC class 2 or limited power source (LPS) power supply.
• Respect the polarity.
• Connect the gateway's ground terminal
• A wrong connection may cause earth loops and damage the Intesis gateway and/or other system
equipment.

5.2.2. Connection Procedure for the AC Unit

Connect the Mitsubishi Heavy Industries air conditioning network bus (Superlink) to the gateway using the C1
and C2 poles of the AC-Port C.
NOTE
There is no polarity to observe.
IMPORTANT
This Intesis gateway supports VRF units with the Superlink-II version.
WIRING CONSIDERATIONS
• Maximum wiring length: 1000 meters (0.75 miles).
• Loop wiring is not allowed.
NOTE
For the Mitsubishi Heavy Industries domestic series with an SC-BIKN-E connector, you need an
SC-ADNA-E adapter (not included).
NOTE
See the Wiring diagram (page

5.2.3. Connection Procedure for Modbus

For Modbus TCP:
Connect the Modbus TCP Ethernet cable to the gateway's Ethernet Port. The correct cable to use depends on
where the gateway is connected:
• Connecting directly to a Modbus TCP device: use a crossover Ethernet UTP/FTP CAT5 or higher cable.
1
Superlink-II is also called New Superlink.
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to the installation grounding.
10).
Connection
1
USER MANUAL Version 1.2.7