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Mitsubishi Electric MELANS - User Manual
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AE-C400A/EW-C50A
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AE-C400E/EW-C50E
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AE-C400E-X/EW-C50E-X
AIR CONDITIONING CONTROL SYSTEMS
MELANS
Centralized Controller Technical Manual
2
Table of Contents
Main Page
Safety precautions
2
Thoroughly read the following safety precautions prior to installation.
2
Observe these precautions carefully to ensure safety.
2
After reading this manual, pass the manual on to the end user to retain for future reference.
2
The user should keep this manual for future reference and refer to it as necessary. This manual should be made available to those who repair or relocate the units. Make sure that the manual is passed on to any future air conditioning system user.
2
General precautions
2
Do not install the controller in areas where large amounts of oil, steam, organic solvents, or corrosive gases (such as ammonia, sulfuric compounds, or acids), or areas where acidic/alkaline solutions or special chemical sprays are used frequently. T...
2
To reduce the risk of short circuits, current leakage, electric shock, malfunction, smoke, or fire, do not wash the controller with water or any other liquid.
2
To reduce the risk of electric shock, malfunction, smoke, or fire, do not touch the electrical parts, USB memory, or touch panel with wet fingers.
2
To reduce the risk of injury or electric shock, before spraying a chemical around the controller, stop the operation and cover the controller.
2
To reduce the risk of injury, keep children away while installing, inspecting, or repairing the controller.
2
If you notice any abnormality (e.g., burning smell), stop the operation, turn off the controller, and consult your dealer. Continuing the operation may result in electric shock, malfunction, or fire.
2
Properly install all required covers to keep moisture and dust out of the controller. Dust accumulation and the presence of water may result in electric shock, smoke, or fire.
2
To reduce the risk of fire or explosion, do not place flammable materials or use flammable sprays around the controller.
2
To reduce the risk of electric shock or malfunction, do not touch the touch panel, switches, or buttons with a sharp object.
2
To avoid injury from broken glass, do not apply excessive force to the glass parts.
3
To reduce the risk of injury, electric shock, or malfunction, avoid contact with the sharp edges of certain parts.
3
Consult your dealer for the proper disposal of the controller. Improper disposal will pose a risk of environmental pollution.
3
Precautions for relocating or repairing the unit
3
The controller must be repaired or moved only by qualified personnel. Do not disassemble or modify the controller. Improper installation or repair may result in injury, electric shock, or fire.
3
Additional precautions
3
To avoid discoloration, do not use benzene, thinner, or chemical rag to clean the controller.
3
When the controller is heavily soiled, wipe the controller with a well-wrung cloth that has been soaked in water with mild detergent, and then wipe off with a dry cloth.
3
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance ...
3
1. Air Conditioning Control System (MELANS)
5
1-1. Summary
5
[1] MA remote controller control line (A control)
5
[2] M-NET transmission line
5
2. MA Remote Controller Control Cable Connections and Restrictions
6
2-1. MA remote controller control cable type and conductor cross-section area
6
2-2. Restrictions on wiring length of the MA remote controller control cable
6
2-3. Example of wiring
7
2-3-1. Connecting with multiple air conditioning systems
7
(1) Wiring between remote controller and indoor unit
7
(2) When using group operation (group 03 and group 04 in the figure)
7
2-3-2. Connecting to a Mr. Slim air conditioning unit
8
(1) Wiring between remote controller and indoor unit
8
(2) Wiring for a group of different refrigerant systems
8
2-4. Remote controller main/sub setting
9
2-5. List of supported models
10
3. M-NET Transmission Cable Connections and Restrictions
11
3-1. Restrictions on M-NET system design
11
3-1-1. [Restriction 1] Restriction on M-NET transmission cable type and conductor cross-section area
12
*1: For environmentally friendly cables, select a flame-resistant cable with a black sheath.
12
*2: The upper limits on cross-section area and cable size vary depending on the model. Check the installation manual for that model.
12
*3: A maximum cable size of 0.75 mm2 is recommended. PAC-YT81HC (10 m) optional cables can also be used.
12
*4: Include the portion exceeding 10 m in the maximum length of the indoor/outdoor transmission cable.
12
3-1-2. [Restriction 2] Restriction on maximum total cable length
12
[1] Summary
12
[2] Calculating the maximum total cable length
13
(1) Example of unit wiring and calculating the maximum total cable length (1)
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(2) Example of unit wiring and calculating the maximum total cable length (2)
13
(3) Example of reviewing M-NET wiring to reduce the wiring length to within the restriction on maximum total cable length
14
(4) Example of calculating the maximum total cable length and power supply distance when using an ME remote controller
15
[3] Restriction on the use of repeaters
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(1) When a transmission booster is connected to the centralized control transmission line
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(2) When a transmission booster is connected to the indoor/outdoor transmission line
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(3) Example where the restriction is not satisfied
17
3-1-3. [Restriction 3] Restriction on number of connectable units
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*1: When 17 to 24 units are connected, other types of units must not be present in the system.
18
3-1-4. [Restriction 4] Restriction on number of controlled units
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[1] Summary
18
[2] Calculating the number of controlled units
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(1) Example of determining the total number of M-NET controlled units
19
(2) Judgement results of total number of M-NET controlled units
20
3-1-5. [Restriction 5] Restriction on power supply factor/power consumption factor
21
[1] Summary
21
[2] Power supply method and settings
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(1) When supplying power from a power supply unit
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(2) When supplying power from the AE-C/EW-C
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(3) When supplying power from an outdoor unit to the centralized control transmission line
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[3] Checking the power supply factor and power consumption
23
3-1-6. [Restriction 6] Restriction on equivalent number of units
24
[1] Summary
24
[2] Calculating the equivalent number of units
24
3-1-7. [Restriction 7] Restriction on power supply distance
25
[1] Summary
25
[2] Calculating the maximum power supply distance
25
*1: When the power jumper is connected to CN40
25
*2: Cannot be used with TB3 only. Connect the M-NET transmission cable securely to both TB3 and TB2.
25
[3] Example of improvement when power supply distance exceeds 200 m
26
(1) When the power supply distance of the centralized control transmission line exceeds 200 m
26
(2) When the power supply distance of the indoor/outdoor transmission line exceeds 200 m
27
3-1-8. Tables
28
[1] Table of product names and models
28
[2] List of power supply factors
28
1 Excepting CITY MULTI S, CITY MULTI YGR standard series P224/P280(S), and high-efficiency series P140 to P280(S).
28
2 When a P224 or higher indoor unit is connected, the value will be the power supply factor minus 24.
28
3 CITY MULTI YGR standard series P224/P280(S), and high-efficiency series P140 to P280(S).
28
4 It is possible to connect a unit with power consumption factor 0 to a CITY MULTI S, CITY MULTI YGR standard series P224/P280(S), and high-efficiency series P140 to P280(S). When a unit with power consumption factor 1 or higher is connected, use a p...
28
[3] List of power consumption factors and equivalent numbers of units
29
3-2. M-NET address / system configuration
30
3-2-1. Overview of setting the M-NET addresses
30
3-2-2. M-NET address and system configuration
30
[1] CITY MULTI for buildings
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(1) Y Series
32
(2) R2 Series
33
(3) Example of connection using an ME remote controller
34
[2] PAC for stores and offices
35
[3] Ventilation equipment
36
[4] e-Series
37
(1) System configuration
37
1) Example of e-Series standard system control
37
2) Wiring and DIP switch settings
38
(2) Simultaneous cooling and heating system control
38
1) Summary
38
2) Wiring and DIP switch settings
39
[5] Hot water supply
39
[6] System controller
40
(1) System controller
40
(2) System remote controller or ON/OFF remote controller
41
[7] Other related devices
42
(1) DIDO controller (66)
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(2) PI controller (60)
43
(3) AI controller (63)
43
4. Expanding the Number of Controlled and Monitored Units Using LAN
44
5. Connecting to External LAN
46
5-1. Using LAN to extend the wiring length
46
6. Connecting to Modbus watt-hour meter
47
6-1. Summary
47
6-2. Basic settings
47
(1) Modbus connection settings
47
(2) Modbus connection settings
47
Make the following settings, referring to the instruction manual for the watt-hour meter.
47
(1) Communication settings
47
(2) Termination resistance (when the watt-hour meter is the last terminal)
47
6-3. Specifications
47
6-4. Transmission distance
47
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Mitsubishi Electric MELANS Specifications
General
Brand
Mitsubishi Electric
Model
MELANS
Category
Controller
Language
English
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