Midea M-INTERFACE Operating instructions

INSTALLATION & OWNER’S
MANUAL
M-INTERFACE GATEWAY
Thank you very much for purchasing our product,
Before using it, please read this manual carefully and keep it for future reference.

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The following contents are stated on the product and the operation manual, including usage,
precautions against personal harm and property loss, and the methods of using the product
correctly and safely.After fully understanding the following contents (identiers and icons), read
the text body and observe the following rules.
CONTENTS PAGE
1. SAFETY INFORMATION
Identier description
Icon description
SAFETY INFORMATION ............................................................................................................................. 1
ACCESSORIES ........................................................................................................................................... 2
M-INTERFACE GATEWAY CONTROLLER INSTALLATION...................................................................... 3
SYSTEM INTRODUCTION .......................................................................................................................... 8
SETTINGS................................................................................................................................................... 15
OPERATION INSTRUCTIONS ................................................................................................................... 18
TROUBLE SHOOTING.............................................................................................................................. .28
Identier Meaning
Warning Means improper handling may lead to personal or severe injury.
Caution Means improper handling may lead to personal injury or property loss.
[Note]: 1. “Harm” means injury, burn and electric shock which need long-term treatment but need
no hospitalization.
2. “Property loss” means loss of properties and materials.
lcon Meaning
It indicates forbidding. The forbidden subject-matter is indicated in the icon or
by images or characters aside.
It indicates compulsory implementation. The compulsory subject-matter is
indicated in the icon or by images or characters aside.

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Accessory Name Qty. Shape Purpose
Owner’s & Installation
Manual 1
Control box 1
Power line 1
Communication socket
with 3 terminals 8
Communication socket
with 6 terminals 1
One Button battery 1
Note:
As the product updates, this document will be changed without prior notice.
Table 2-1
2. ACCESSORIES
Warning
Delegate
installation
■ Please entrust the distributor or professionals to install the unit. The
installers must have the relevant know-how. Improper installation
performed by the user without permission may cause re, electric,
shock, personal injury or water leakage.
■ Please do not strike down the M-INTERFACE gateway controller,
otherwise it may lead to abnormal operation, overheating, and
cause electric shock or re etc. damages.
Usage
Warning
Forbid Do not spray flammable aerosol to the M-INTERFACE gateway
controller directly. Otherwise, re may occur.
Forbid Do not operate with wet hands or let water enter the M-INTERFACE
gateway controller. Otherwise, electric shock may occur.

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NOTE
CAUTION
251
173
292.5 319
■ Do not install near a place leak ammble gas easily, otherwise it may cause re;
■ Wiring according to the instruction manual, do not press the terminals, otherwise it may cause
electricity leakage, wire broken, overheat, and re.
Before careful read this manual, do not connect the control system power, and do not do any
installation work, until ensure the preparation work has been done.
3. M-INTERFACE GATEWAY CONTROLLER INSTALLATION
■ Do not install near where has electromagnetic interference or network stations;
■ Do not install near a place has any heat source and steam source or ammable gas source,
which will cause electric leakage easily;
■ Installation should comply with the local rules;
■ Ensure there has enough installation space, for heat dissipation of the community service
network device nearby.
3.1 M-INTERFACE Gateway controller structure
1) Front view of M-INTERFACE gateway controller (Unit: mm)
Fig.3-1

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Fig.3-4
319±1
66.4±1
2) Side view of M-INTERFACE gateway controller (Unit: mm)
3) Detailed drawing of installation holes (Unit: mm)
Installation precautions:
■ Must be installed indoors, guarantee the gateway controller
installation must be higher than the ground 50 cm;
■ Install at a place where should not affect by electromagnetic
wave or dust;
■ Avoid to install at a place where affects by sunshine or heat
source device etc;
■ Avoid to install at a place where has high humidity or can
contact the water;
■ Avoid to install at a place where will produce corrosive or
ammable gas.
■ If suspension installed, make sure put the communication
terminal at the upper side.
Please install according to the above requirements, check
installation environment before installation.
3.2 System framework specication
Fig.3-2
Fig.3-3
4
5.5
R3.5

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NOTE
LED indication
lamp
Main power
terminal
Power ON/OFF switch
M-net terminal
I/O terminal
LAN terminal
Console terminal
Fig.3-5
M-INTERFACE gateway controller is used for query and controls the air-conditioning indoor unit,
and transmits the status information of indoor unit to the computer and transmits the controlling and
querying orders sent by the computer to the indoor unit.
1) M-INTERFACE gateway controller indication instructions
M-INTERFACE gateway has 8 M-net terminals, 1 LAN terminal, 8 M-net terminal indication lamps, 4
status display lamps (Power, Status, Alarm, and Modem) and power switch. Connect to the central air-
conditioning system through the M-net terminal, and connect the local area network or Internet network
through LAN terminal. Computer or other similar devices can visit M-INTERFACE WEB through
Brower, and then local or remote control the devices.
■ Install the gateway at a side of M-net communicating bus, do not install it in the middle of the
bus.
■ Use 3-core shielding wire with 0.7mm2~1.0mm2for wiring, details please refers to professionals.

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LAN terminal
Console terminal
I/O terminal
1 2 3 4 5 6
XYE
K1K2E
2) Terminal gure
3) LED indication lamp instructions
Fig.3-6
Table.3-1
LED status:
■ Under normal situation, Status lamp will ash with 1HZ frequency, and Alarm lamp will
light off;
■ Under error situation, Status lamp will ash with 1HZ frequency, and Alarm lamp will
ash with 1HZ frequency.
Indication lamp Color Indication lamp instructions
TX1~TX8 Yellow No.1-8 sending terminals indication lamp
RX1~RX8 Green No.1-8 receiving terminals indication lamp
Power Red Power indication lamp
Status Green Status indication lamp
Alarm Yellow Alarm indication lamp
Modem Green Reserve indication lamp

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NOTE
4) Specication parameters of M-INTERFACE gateway controller
5) Denitions for code switch as follow:
6) Button battery installation
Fig.3-7
Table.3-2
Table.3-3
Fig.3-8
After adjusted the dial code switch, please install the button batteries (attached in the
accessories package) as the above gure. And synchronize the time refers to 5.2 Time setting.
Power specication Voltage range Single phase AC 100~240V, 50/60 Hz
Consumed power Max.15W
Using conditions
Voltage uctuation Rated value ±10%
Ambient temp. 0~50℃
Ambient humidity 25%~90%
Storage temp. -20~60℃
Capacity Insulated resistance When it is DC 500VM, it will over 50MΩ
Weight 4.4kg
Color of the cover Milky white
Gateway controller On Off (Factory state)
SW1-1 No power
consumption function
power consumption
function
SW1-2 Dial code setting IP WEB setting IP
SW1-3
No power
consumption function
Dial code setting IP
Auto topology
SW1-4 Reserve
Note: Dial code switch needs to take off the cover of control box, and take down four screws
on the cover.
O NDI P
1324
ON
OFF

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Table.3-4
7) IO terminal
8) Uninterruptible power supply (UPS BK650-CH optional)
Table.3-5
4. SYSTEM INTRODUCTION
M-INTERFACE is a Central Air-conditioning multi-connected devices’ gateway which based on WEB,
is an important part of Intelligent Manager system (IMM). Connect to Central Air-conditioning devices
through the M-net terminal. It can connect the multi-connected devices through its M-net connector
(M-net connector is XYE communication terminals and K1K2E communication terminals); under the
auto topology mode, it can connect 4 refrigerant systems at most (can insert 256 sets indoor units and
16 sets outdoor units); under the manual topology mode, it can connect16 refrigerant systems at most
(can insert 256 sets indoor units and 64 sets outdoor units). The operation methods of auto topology
and manual topology please refer to IMM TECHNOLOGY MANUAL. The appearance interface of
M-INTERFACE gateway as follow displays:
Requirements Performance
Capacity 650 VA/400 Watt
Voltage 220V±8%(Battery)
Control signal 50Hz±1Hz(Battery)
Note: When cut off the power please completely close
the computer.
Gateway
controller Base pin name Function denition
Pin1 Gateway controller error output;
Pin2
When the device operates normally, break off Pin1 and
Pin2, close Pin2 and Pin3; when it is error, close Pin1 and
Pin2, break off Pin2 and Pin3.
Pin3 When it’s powered off, the device still output error.
Pin4
Emergency stop signal, this signal is input signal, and if this
signal is high-level (12~36VDC), then means emergency
stop; if this signal is low-level (0~0.7VDC), then means
normal.
Pin5 Reserve function
Pin6 Ground wire with emergency signal
1 2 3
IN1 IN2 E
4 5 6

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4.1 M-INTERFACE Network
1) M-INTERFACE gateway can connect the local area network or Internet network through LAN
terminal. M-INTERFACE network topology as follows Fig 4-1.
2) M-net terminals are listed to be two rows, 1-4 are XYE terminals, 5-8 are K1K2E terminals.
Computer or other similar devices can visit M-INTERFACE WEB through browser, and then local
or remote control the devices.
4.2 Models which could be inserted
1) Can freely insert all VRF models.
2) If mini VRF will be connected to the project and need power consumption function, the outdoor unit
must be connected to an extra module.
3）Details refer to IMM TECHNOLOGY MANUAL.
4.3 Base on WEB technology
M-INTERFACE is a gateway based on WEB technology, unrelated to computer or similar devices
operation systems. M-INTERFACE insert into network then can browse the WEB page through the
browser of system platform, we suggest using IE (9.0 or above), Firefox (11.0 or above), Chrome (18.0
or above) or Safari (5.1 or above).
4.4 Local network connection
M-INTERFACE gateway can connect to the LAN network through switch. IP address of computer or
similar devices must in the same subnet area as the IP address of M-INTERFACE gateway.
Fig.4-1

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4.4.1 IP conguration
Default IP of gateway is 192.168.100.40, subnet cover code is 255.255.255.0. IP address of comput-
er or similar devices should manual configure the statistic IP and within the range of 192.168.100,
subnet cover code should be 255.255.255.0. If the computer only insert the M-INTERFACE network,
then use the way of configuring single IP; if the computer also inserts the local network beside
M-INTERFACE network, then use the way of conguring several IP. Methods as follow (Take windows
7 system for example).
1) Congure single IP
Open the property dialogue box to congure the IP address and subnet cover code, for example: IP:
192.168.100.44, subnet cover code: 255.255.255.0.
After conguration, click the “OK” button.
2）Congure several IP
Before congure several IP, it needs to congure a statistic IP address, conguring steps as follow:
■ Check the local IP
Open the property dialogue box, as Fig.4-2 display, if the option “Use the following IP
addresses(S)” has been selected, and the interface displayed IP address, that means the local
IP is statistic IP address. Otherwise it is a dynamic IP address, then it needs to configure a
statistic IP address.
■ Congure statistic IP address
Open the “Start” menu, and type “cmd” in the search column, and display the dialogue box as
follow:
Fig.4-2

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Fig.4-3
Type “ipcong” in the above gure, then the interface will display the local dynamic IP address, and it
will write this IP address into the property dialogue box, and nish the statistic IP address conguration,
details please consult the local network administrator.
After the statistic IP address configuration, open the property dialogue box again, select the
“Advanced”, and display the TCP/IP setting dialogue box as follow:
Fig.4-4
Click the “ADD” button under IP address column, and add a IP address with the same network
segment of “192.168.100.40”, such as IP: 192.168.100.101, sub network cover code: 255.255.255.0,
and click “OK” button.

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4.4.2 Local LAN access
If there is a computer or other similar device of same subnet area as M-INTERFACE in LAN, then
type the link address of M-INTERFACE gateway (e.g.: http://192.168.100.40) on the browser address
bar can visit the M-INTERFACE WEB interface to operate the air-conditioning device. The local visit
topology structure as follow display:
Fig.4-5
4.5 Remote network connection
Under the allowable situation, M-INTERFACE gateway can set in the ofce network; the user can
operate the air-conditioning device through the computer or similar devices. Remote insert should base
on some IT technology and help by the network administrator. Three remote insert methods:
1) Statistic IP
Configure public network address statistic IP address for M-INTERFACE gateway, and set it in
the internet; directly visit this public network address then can visit the WEB interface. Ask the local
network operator for the public network address. The public network address insert fee will be charged
by opera-tor, and consider the network safety at the same time.
Fig.4-6

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Fig.4-9
2) Network terminal mapping
If the company has a public network address, then it needs to send a mapping of a terminal in re
wall to M-INTERFACE gateway; when the computer or similar device of outside network visit the
M-INTERFACE, then take http:// public network IP: visit as a terminal. E.g.: http:// 203.208.60.72:6080.
3) VPN visit
■ Router establishing
M-INTERFACE gateway might use a same public IP address with other devices, under the
situation of network cannot send terminal mapping to M-INTERFACE gateway, and then can use
VPN for visiting. As the gure displayed, VPN tunnels establish between routers, and then can
visit WEB interface through VPN tunnels. VPN Server can be established by oneself also can be
rented. Its topology structure as follow display:
■ Computer establishing way
Establish VPN tunnel by computer is a little difficult for general users. Use VPN client-side
software and VPN Server to establish VPN tunnel in the user’s computer, then user can visit WEB
interface through VPN tunnel. VPN client-side software and VPN Server can be achieved by
commercial ways. Its topology structure as follow display:
Fig.4-7
Fig.4-8

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4.6 WEB functions introduction
WEB system has “Device control”, “System mapping”, “Setting”, “Device information” and “Help” etc.
functions.
1) Device monitoring
Offer indoor and outdoor units’ operating details and control the indoor unit.
2) System mapping
Display the entire situation of refrigerant system; include quantities of indoor and outdoor units
in refrigerant system, ammeter quantity and communication quality between single device and
M-INTERFACE gateway.
3) Setting
Offer the centralize controller conguration, time setting, IP setting and User management etc.
functions.
4) Device information
Display and amend detail information of indoor and outdoor devices in air-conditioning system.
5) Help
Offer helping information for user.
Fig.4-10

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5.2 Time setting
Fig.5-2
5. SETTINGS
Do the following settings before using the M-INTERFACE gateway. Only the administrator can
make the following operation.
5.1 M-INTERFACE setting
M-INTERFACE gateway setting as the following display, the setting of baud rate and the energy-
requiring compatibility please refer to IMM TECHNOLOGY MANUAL.
Fig.5-1
Offer M-INTERFACE gateway system time synchronization function, display as follow:
Select the time area, click the “OK” button, and then click the “Synchro time” button for
synchronization. Time synchronization function should be used with caution; details refer to IMM
TECHNOLOGY MANUAL.

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5.3 IP setting
If add the M-INTERFACE into local network, then it needs to reset the M-INTERFACE IP address,
and click “OK ” button after setting. If many M-INTERFACEs in the same network area, then the IP
address could not be repeated.
Fig.5-3
5.4 FTP setting
Set the IP address, terminal, login name (Default: test) and password (Default: 123456) of ftp server.
Click “apply” button after setting.
Fig.5-4

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Fig.5-5
5.5 Multi-pipe setting
Setting contents include: system mode(2:Two-pipe system, 3:Three-pipe system), auto cooling and
heating(only valid for Three-pipe system), temperature different value(ΔT: different value of setting
temperature and room temperature), changing time interval.

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6. OPERATION INSTRUCTIONS
6.1 User login
Type the link address of M-INTERFACE gateway on the browser address (take windows 7 system,
IE for example), then can visit the M-INTERFACE WEB login interface.
Enter the login page, user operates as follow to enter into system:
1) Select user name, type in password;
2) Select the display language;
3) Click [OK] to enter the M-INTERFACE WEB home page;
4) Click [Cancel] to cancel this typing;
If login failed please refers to 7.2 in Appendix.
For safety, every user only can login at one place, if there are repeated login (even the same
computer with different browser), it will force the rst login user back to the login interface. After the
user login, 5 minutes without operations, and re-operate it, the page will automatically back to the login
interface.
Fig.6-1

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Main menu
Submenu
Fig.6-2
6.2 Main interface introduction
WEB home page display as follow:
Information
display
Home page: main menu, submenu and information display. Main menu: display all functions of
system, include “Device monitoring”, “System mapping”, “Setting”, “Device information” and “Help”
etc. functions. Submenu: simple divide the main menu. Information display: display information of a
function.
6.3 Devices monitoring
According to terminal and system to display the operating status of indoor and outdoor units, and
control the indoor unit. Find out the error in system through checking the operating status of indoor and
outdoor units. Detailed display the page will refresh every 10 seconds.
6.3.1 Terminals monitoring
Select the terminal, the page will display corresponding air-conditioning devices under 8 M-net
terminals, and the connected indoor units in 1-4 terminals; it offers checking and amending functions
the operating status of indoor unit.
1) Check the operating status of indoor unit
Fig.6-3