HMS Networks Intesis IN770AIR00XO000 User manual

Midea commercial and VRF with KNX, Serial and IP support
IN770AIR00XO000 GATEWAY
USER MANUAL
Version 1.0.7
Publicaon date 2023-11-17
ENGLISH

Copyright © 2023 Intesis
Disclaimer
The informaon in this document is for informaonal purposes only. Please inform HMS Networks of any
inaccuracies or omissions found in this document. HMS Networks disclaims any responsibility or liability for any
errors that may appear in this document.
HMS Networks reserves the right to modify its products in line with its policy of connuous product
development. The informaon in this document shall therefore not be construed as a commitment on the
part of HMS Networks and is subject to change without noce. HMS Networks makes no commitment to update
or keep current the informaon in this document.
The data, examples and illustraons found in this document are included for illustrave purposes and are only
intended to help improve understanding of the funconality and handling of the product. In view of the wide
range of possible applicaons of the product, and because of the many variables and requirements associated
with any parcular implementaon, HMS Networks cannot assume responsibility or liability for actual use
based on the data, examples or illustraons included in this document nor for any damages incurred during
installaon of the product. Those responsible for the use of the product must acquire sucient knowledge in
order to ensure that the product is used correctly in their specic applicaon and that the applicaon meets all
performance and safety requirements including any applicable laws, regulaons, codes and standards. Further,
HMS Networks will under no circumstances assume liability or responsibility for any problems that may arise as
a result from the use of undocumented features or funconal side eects found outside the documented scope
of the product. The eects caused by any direct or indirect use of such aspects of the product are undened and
may include e.g. compability issues and stability issues.

Table of Contents
1. Descripon and Order Codes ..................................................................................................... 1
2. Licensing ................................................................................................................................ 2
3. General Informaon ................................................................................................................ 3
3.1. Intended Use of the User Manual ........................................................................................ 3
3.2. General Safety Informaon ................................................................................................ 3
3.3. Admonion Messages and Symbols ..................................................................................... 3
4. Overview ............................................................................................................................... 5
4.1. Inside the Package ............................................................................................................ 6
4.2. Main Features .................................................................................................................. 6
4.3. Gateway General Funconality ........................................................................................... 7
5. Hardware ............................................................................................................................... 8
5.1. Mounng ........................................................................................................................ 8
5.2. Connecon .................................................................................................................... 10
5.2.1. Gateway Connectors ................................................................................................. 10
5.2.2. Connecon Procedure for the AC Unit ......................................................................... 12
5.2.3. Connecon Procedure for Modbus .............................................................................. 12
5.2.4. Connecon Procedure for KNX ................................................................................... 13
5.2.5. Connecon Procedure for BACnet ............................................................................... 14
5.2.6. Connecon Procedure for Home Automaon ................................................................ 15
5.2.7. Connecon to a PC for Conguraon ........................................................................... 15
5.3. Gateway Layout .............................................................................................................. 16
5.4. LED Indicators ................................................................................................................. 17
5.5. DIP Switches ................................................................................................................... 17
5.6. Push Buon ................................................................................................................... 18
5.7. Technical Specicaons .................................................................................................... 19
5.8. Dimensions .................................................................................................................... 20
6. Available Applicaons ............................................................................................................. 21
6.1. Integraon into Modbus Systems ....................................................................................... 21
6.1.1. Modbus Registers .................................................................................................... 21
6.2. Integraon into KNX Systems ............................................................................................. 23
6.2.1. KNX Signals ............................................................................................................. 23
6.3. Integraon into BACnet Systems ......................................................................................... 27
6.3.1. BACnet Objects ....................................................................................................... 27
6.4. Integraon into Home Automaon Systems ......................................................................... 30
6.4.1. Home Automaon Signals ......................................................................................... 30
7. Late Conguraon: Change the Gateway's Protocol ..................................................................... 31
8. Error Codes ........................................................................................................................... 32
Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7

1. Descripon and Order Codes
IN770AIR00xO000 Gateway.
Modbus®, KNX®, BACnet®, and Home Automaon® gateway for Midea® air condioning systems.
ORDER CODE LEGACY ORDER CODE
IN770AIR00xO0001INBACMID004I000
1 The x stands for S or M, depending on the license you have purchased.
To know more, see Licensing (page 2).
NOTE
The order code may vary depending on the product seller and the buyer's locaon.
Descripon and Order Codes Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 1 of 33

2. Licensing
Distribuon license(s) for the IN770AIR00xO000 gateway:
Order Code License Maximum AC units
Indoor units Outdoor units
IN770AIR00SO000 Small 16 0
IN770AIR00MO000 Medium 64 0
NOTE
The order code may vary depending on the product seller and the buyer's locaon.
Midea commercial and VRF with KNX, Serial and IP support Licensing
Page 2 of 33 USER MANUAL Version 1.0.7

3. General Informaon
3.1. Intended Use of the User Manual
This manual contains the main features of this Intesis gateway and the instrucons for its appropriate
installaon, conguraon, and operaon.
The contents of this manual should be brought to the aenon of any person who installs, congures, or
operates this gateway or any associated equipment.
Keep this manual for future reference during the installaon, conguraon, and operaon.
3.2. General Safety Informaon
IMPORTANT
Follow these instrucons carefully. Improper work may seriously harm your health and damage the
gateway and/or any other equipment connected to it.
Only technical personnel, following these instrucons and the country legislaon for installing electrical
equipment, can install and manipulate this gateway.
Install this gateway indoors, in a restricted access locaon, avoiding exposure to direct solar radiaon, water, high
relave humidity, or dust.
All wires (for communicaon and power supply, if needed) must only be connected to networks with indoor
wiring. All communicaon ports are considered for indoor use and must only be connected to SELV circuits.
Disconnect all systems from power before manipulang and connecng them to the gateway.
Use SELV-rated NEC class 2 or limited power source (LPS) power supply.
Use a circuit breaker before the power supply. Rang: 250 V, 6 A.
Supply always a correct voltage to power the gateway. See Technical Specicaons (page 19).
Respect the expected polarity of power and communicaon cables when connecng them to the gateway.
3.3. Admonion Messages and Symbols
DANGER
Instrucons that must be followed to avoid an imminently hazardous situaon that, if not avoided,
will result in death or severe injury.
WARNING
Instrucons that must be followed to avoid a potenally hazardous situaon that, if not avoided,
could result in death or severe injury.
CAUTION
Instrucon that must be followed to avoid a potenally hazardous situaon that, if not avoided,
could result in minor or moderate injury.
General Informaon Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 3 of 33

IMPORTANT
Instrucon that must be followed to avoid a risk of reduced funconality and/or damage to the
equipment or to avoid a network security risk.
NOTE
Addional informaon which may facilitate installaon and/or operaon.
TIP
Helpful advice and suggesons.
NOTICE
Remarkable Informaon.
Midea commercial and VRF with KNX, Serial and IP support Admonion Messages and Symbols
Page 4 of 33 USER MANUAL Version 1.0.7

4. Overview
This IN770AIR00xO000 gateway supports four applicaons.
Gateway's client interface ↔ Gateway's server interface
Midea commercial and VRF HVAC
systems to
Modbus TCP and RTU
KNX TP
BACnet/IP or MS/TP
Home Automaon
IMPORTANT
This document assumes that the user is familiar with these technologies.
Figure 1. Integraon of Midea AC systems into Modbus installaons
Figure 2. Integraon of Midea AC systems into KNX installaons
Overview Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 5 of 33

Figure 3. Integraon of Midea AC systems into BACnet installaons
Figure 4. Integraon of Midea AC systems into Home Automaon installaons
4.1. Inside the Package
Items included:
• Intesis IN770AIR00xO000 Gateway
• USB Mini-B type to USB Type-A cable
•Installaon sheet
4.2. Main Features
• Several applicaons available: Congurable for BACnet/IP and MS/TP, Modbus TCP and RTU, KNX, and Home
Automaon communicaon protocols.
• Late conguraon: Change between applicaons easily.
• Scan funcon: Find the devices connected to the air condioning bus.
Midea commercial and VRF with KNX, Serial and IP support Inside the Package
Page 6 of 33 USER MANUAL Version 1.0.7

•Specic signals to monitor outdoor units.
• 2 x DIP switches for the EIA-485 connector terminaon and polarizaon conguraon.
• 14 LEDs indicate the operang status for both the gateway and the communicaon bus.
• DIN rail and wall mounng case.
• Accredited with the main cercaons for electronic equipment.
•Mulple ports for serial and TCP/IP communicaon:
– Green pluggable terminal block for EIA-485 (3 poles)
– Orange pluggable terminal block for KNX (2 poles)
– Ethernet
– Green pluggable terminal block for binary inputs (4 poles)
– USB Mini-B type 2.0 port for connecon to the PC
– Green pluggable terminal block for AC connecon (2 poles)
– Green pluggable terminal block for AC connecon (3 poles)
– Green pluggable terminal block for AC connecon (3 poles)
NOTE
Depending on the AC bus, some of these AC connecon ports are not used. See Gateway
Connectors (page 10).
4.3. Gateway General Funconality
With this Intesis IN770AIR00xO000 gateway, you can easily integrate Midea Commercial and VRF systems into an
installaon based on Modbus TCP, Modbus RTU, KNX, BACnet/IP, BACnet MS/TP, or Home Automaon. To do so,
the gateway acts as a server device of the installaon itself, accessing all signals from each air condioner unit
and controlling the whole AC network.
The gateway is connuously polling the AC network, storing in its memory the current status of every signal
you want to track and serving this data to the installaon when requested. Also, when a signal status changes,
the gateway sends a write telegram to the installaon, waits for the response, and performs the corresponding
acon.
A lack of response from a signal acvates a communicaon error, allowing you to know which signal from which
AC unit is not correctly working.
Gateway General Funconality Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 7 of 33

5. Hardware
5.1. Mounng
IMPORTANT
Before mounng, please ensure that the chosen installaon place preserves the gateway from direct
solar radiaon, water, high relave humidity, or dust.
IMPORTANT
Maximum mounng height: below 2 meters (6.5 feet).
NOTE
Mount the gateway on a wall or over a DIN rail. We recommend the DIN rail mounng opon,
preferably inside a grounded metallic industrial cabinet.
IMPORTANT
Ensure the gateway has sucient clearances for all connecons when mounted. See Dimensions
(page 20).
Wall mounng
1. Press the top side mobile clips in the rear panel unl you hear a click.
2. Use the clip holes to x the gateway on the wall using screws.
NOTE
Use M3 screws, 25 mm (1") length.
3. Make sure the gateway is rmly xed.
Midea commercial and VRF with KNX, Serial and IP support Hardware
Page 8 of 33 USER MANUAL Version 1.0.7

DIN rail mounng
1. Fit the gateway’s top-side clips in the upper edge of the DIN rail.
2. Press the low side of the gateway gently to lock it in the DIN rail.
3. Make sure the gateway is rmly xed.
NOTE
For some DIN rails, to complete step 2, you may need a small screwdriver or similar to pull the
boom clip down.
Mounng Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 9 of 33

5.2. Connecon
CAUTION
Disconnect all systems from power before manipulang and connecng them to the gateway.
IMPORTANT
Keep communicaon cables away from power and ground wires.
5.2.1. Gateway Connectors
Figure 5. Wiring diagram
Midea commercial and VRF with KNX, Serial and IP support Connecon
Page 10 of 33 USER MANUAL Version 1.0.7

Connectors' wiring:
IMPORTANT
For all connectors, use solid or stranded wires (twisted or with ferrule).
Cross-secon/gauge per terminal:
• One core: 0.2 .. 2.5 mm2 / 24 .. 11 AWG
• Two cores: 0.2 .. 1.5 mm2 / 24 .. 15 AWG
• Three cores: Not permied
NOTE
To know more about each port's specicaons, see Technical Specicaons (page 19).
NOTE
Mount the gateway in the desired installaon site before wiring.
Communicaon ports:
PORT USAGE WIRING
EIA-485 BACnet MS/TP and Modbus RTU SG: Signal
ground B- A+
KNX KNX bus + -
Ethernet
As an IP/TCP port: BACnet/IP, Modbus
TCP, and Home Automaon
As a console port: Connecon to a PC for
conguraon purposes
Ethernet cable (CAT5 or higher)
When using the building LAN, contact the network administrator and
make sure trac is allowed. When starng up the gateway for the
rst me, DHCP will be enabled for 30 seconds. Aer that me, the
default IP 192.168.100.246 will be set.
AC-Port A Not used
AC-Port B
Observe polarity Midea bus B1: Y B2: X B3: Not used
AC Port-C Not used
USB Connecon to a PC for conguraon
purposes USB Mini-B type
Digital Inputs Dry contact for input devices C: Common I1: Input 1 I2: Input 2 I3: Input 3
USB port:
USB Type-A 2.0 connector for saving logs into a USB ash drive.
IMPORTANT
This USB connector does not support HDD devices.
Power supply:
The power supply connector is a green pluggable terminal block (three poles) labeled as Power.
Apply the voltage within the admied range and of enough power:
•For DC: 12 .. 36 VDC (+/-10%), Max: 250 mA
•For AC: 24 VAC (+/-10 %), 50-60 Hz, Max: 127 mA
Recommended voltage: 24 VDC, Max: 127 mA
Connecon Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 11 of 33

IMPORTANT
•When using a DC power supply: Respect the polarity labeled on the power connector for the
posive and negave 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 to the installaon grounding.
• A wrong connecon may cause earth loops and damage the Intesis gateway and/or other system
equipment.
5.2.2. Connecon Procedure for the AC Unit
Connect the Midea air condioning network bus (XY) to the gateway using the B1 and B2 poles of the AC-Port B.
INCOMPATIBILITY
The gateway cannot be connected when a central controller module (CCM) is present in the bus.
IMPORTANT
Observe polarity
NOTE
See the Wiring diagram (page 10).
5.2.3. Connecon 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:
•Connecng directly to a Modbus TCP device: use a crossover Ethernet UTP/FTP CAT5 or higher cable.
•Connecng to a hub or switch of the LAN of the building: use a straight Ethernet UTP/FTP CAT5 or higher
cable.
NOTE
Some devices detect the dierence automacally and adjust themselves.
NOTE
When commissioning the gateway for the rst me, DHCP will be enabled for 30 seconds. During
that me, if there is a DHCP server, an IP address will be automacally assigned to the gateway. If
there is no DHCP, you can type an IP address of your choice. Aer that me, the default IP address
192.168.100.246 will be automacally set.
Midea commercial and VRF with KNX, Serial and IP support Connecon
Page 12 of 33 USER MANUAL Version 1.0.7

IMPORTANT
If communicang through the LAN of the building, contact the network administrator and make sure
trac on the used port is allowed through all LAN paths.
For Modbus RTU:
Connect the Modbus RTU communicaon cable to the gateway's EIA-485 port.
The connector for the EIA-485 bus is a green pluggable terminal block labeled SG (signal ground), B-, and A+.
IMPORTANT
Observe polarity.
IMPORTANT
Remember the characteriscs of the standard EIA-485 bus:
• Maximum distance of 1200 meters (0.75 miles).
• Maximum of 32 devices connected to the bus.
• A 120 ohms (Ω) terminaon resistor is needed at each end of the bus. The gateway has an internal
bus biasing circuit already incorporang the terminaon resistor. It can be enabled using the DIP
switch block (SW A) dedicated to the EIA-485 port:
Posion 1
– ON: 120 Ω terminaon acve.
– OFF: 120 Ω terminaon inacve.
Posions 2 and 3
– ON: Polarizaon acve.
– OFF: Polarizaon inacve.
For further details, see DIP Switches (page 17).
IMPORTANT
When installing the gateway at the end of the bus with the terminaon resistor enabled, do not
install an addional terminaon resistor at that end.
NOTE
See the Wiring diagram (page 10).
5.2.4. Connecon Procedure for KNX
Connect the KNX TP communicaon cable to the gateway's KNX port.
IMPORTANT
Observe polarity.
NOTE
See the Wiring diagram (page 10).
Connecon Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 13 of 33

5.2.5. Connecon Procedure for BACnet
For BACnet/IP:
Connect the BACnet/IP Ethernet cable to the gateway's Ethernet Port. The correct cable to use depends on
where the gateway is connected:
•Connecng directly to a BACnet/IP device: use a crossover Ethernet UTP/FTP CAT5 or higher cable.
•Connecng to a hub or switch of the LAN of the building: use a straight Ethernet UTP/FTP CAT5 or higher
cable.
NOTE
Some devices detect the dierence automacally and adjust themselves.
NOTE
When commissioning the gateway for the rst me, DHCP will be enabled for 30 seconds. During
that me, if there is a DHCP server, an IP address will be automacally assigned to the gateway. If
there is no DHCP, you can type an IP address of your choice. Aer that me, the default IP address
192.168.100.246 will be automacally set.
IMPORTANT
If communicang through the LAN of the building, contact the network administrator and make sure
trac on the used port is allowed through all LAN paths.
For BACnet MS/TP:
Connect the BACnet MS/TP communicaon cable to the gateway's EIA-485 port.
The connector for the EIA-485 bus is a green pluggable terminal block labeled SG (signal ground), B-, and A+.
IMPORTANT
Observe polarity.
IMPORTANT
Remember the characteriscs of the standard EIA-485 bus:
• Maximum distance of 1200 meters (0.75 miles).
• Maximum of 32 devices connected to the bus.
• A terminaon resistor of 120 ohms (Ω) is needed at each end of the bus. The gateway has an
internal bus biasing circuit already incorporang the terminaon resistor. It can be enabled using
the DIP switch block dedicated to the EIA-485 port:
Posion 1
– ON: 120 Ω terminaon acve.
– OFF: 120 Ω terminaon inacve.
Posion 2 and 3
– ON: Polarizaon acve.
– OFF: Polarizaon inacve.
For further details, see DIP Switches (page 17).
Midea commercial and VRF with KNX, Serial and IP support Connecon
Page 14 of 33 USER MANUAL Version 1.0.7

IMPORTANT
When installing the gateway at the end of the bus with the terminaon resistor enabled, do not
install an addional terminaon resistor at that end.
NOTE
See the Wiring diagram (page 10).
5.2.6. Connecon Procedure for Home Automaon
Connect the Home Automaon Ethernet cable to the gateway's Ethernet Port. The correct cable to use depends
on where the gateway is connected:
•Connecng directly to a Home Automaon device: use a crossover Ethernet UTP/FTP CAT5 or higher cable.
•Connecng to a hub or switch of the LAN of the building: use a straight Ethernet UTP/FTP CAT5 or higher
cable.
NOTE
When commissioning the gateway for the rst me, DHCP will be enabled for 30 seconds. During
that me, if there is a DHCP server, an IP address will be automacally assigned to the gateway. If
there is no DHCP, you can type an IP address of your choice. Aer that me, the default IP address
192.168.100.246 will be automacally set.
IMPORTANT
If communicang through the LAN of the building, contact the network administrator and make sure
trac on the used port is allowed through all LAN paths.
NOTE
See the Wiring diagram (page 10).
5.2.7. Connecon to a PC for Conguraon
Use the supplied USB Mini-B type to USB Type-A cable to connect the gateway through its Console port to a PC
to congure it with Intesis MAPS.
NOTE
You can use the Ethernet Port to connect the gateway and the PC instead.
NOTICE
Find all you need to know about the gateway conguraon and Intesis MAPS in the Intesis MAPS
User manual for IN770AIR00xO000.
NOTE
See the Wiring diagram (page 10).
Connecon Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 15 of 33

5.3. Gateway Layout
Figure 6. Disposion of hardware elements in the gateway
Plasc covers numbered in the image as ①, ②, ③, and ④ can be easily disassembled.
The following secons explain each element in more detail: LEDs, DIP switches, and the push buon.
Midea commercial and VRF with KNX, Serial and IP support Gateway Layout
Page 16 of 33 USER MANUAL Version 1.0.7

5.4. LED Indicators
Table 1. LEDs locaon and behavior
Cover LED Color Descripon
Top side
Under frontal cover ①
LED 1 (PWR) Green Power on (not programmable)
LED 2 (ERR) Red Blinking: Hardware error
LED 3 Green 485 Tx (RS485 for BACnet or Modbus)
LED 4 Yellow 485 Rx (RS485 for BACnet or Modbus)
Under frontal cover ②
LED 5 Green KNX Port Tx
LED 6 Yellow KNX Port Rx
BUTTON LED Green
KNX: Programming mode on
BACnet: BACnet link established
Modbus and Home Automaon: Not used
LED 7 Green Ethernet link established
LED 8 Yellow Ethernet speed
Boom side
Under frontal cover ③
LED 9 Green AC-Port A Tx (HBS)
LED 10 Yellow AC-Port A Rx (HBS)
LED 11 Green AC-Port B Tx (RS485)
LED 12 Yellow AC-Port B Rx (RS485)
Under frontal cover ④ LED 13 Green AC-Port C Tx (UFO-SLQ)
LED 14 Yellow AC-Port C Rx (UFO-SLQ)
NOTE
LEDs are hidden behind the four frontal labeled covers (see the gure Disposion of hardware
elements in the gateway (page 16)). These covers are assembled by pressure, so you just need to pull
them to remove them.
5.5. DIP Switches
The gateway has two DIP switches (see the gure Disposion of hardware elements in the gateway (page 16)):
• DIP switch A (SW A)
• DIP switch B (SW B)
Each DIP switch is dedicated to a 485 port, and its funcon is to acvate or deacvate the terminaon resistor
and the polarizaon of each port:
Posion Descripon
1 2 3
↑ X X 120 Ω terminaon acve
↓ X X 120 Ω terminaon inacve (default posion)
X ↑ ↑ Polarizaon acve (default posion)
X ↓ ↓ Polarizaon inacve
LED Indicators Midea commercial and VRF with KNX, Serial and IP support
USER MANUAL Version 1.0.7 Page 17 of 33