Mitsubishi Electric MELANS Technical Manual

Centralized controller

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AIR CONDITIONING CONTROL SYSTEMS

MELANS

Centralized Controller Technical Manual

►AE-C400A/EW-C50A

►AE-C400E/EW-C50E

►AE-C400E-X/EW-C50E-X

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Summary of Contents for Mitsubishi Electric MELANS

Page 1 AIR CONDITIONING CONTROL SYSTEMS MELANS Centralized Controller Technical Manual ►AE-C400A/EW-C50A ►AE-C400E/EW-C50E ►AE-C400E-X/EW-C50E-X...
Page 2 Safety precautions Safety precautions  Thoroughly read the following safety precautions prior to installation.  Observe these precautions carefully to ensure safety.  After reading this manual, pass the manual on to the end user to retain for future reference. ...
Page 3 Safety precautions To avoid injury from broken glass, do not apply excessive force to the glass parts. To reduce the risk of injury, electric shock, or malfunction, avoid contact with the sharp edges of certain parts. Consult your dealer for the proper disposal of the controller. Improper disposal will pose a risk of environmental pollution.
Page 4 Contents 1. Air Conditioning Control System (MELANS) ..............5 1-1. Summary..............................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.
Page 5 1. Air Conditioning Control System (MELANS) 1. Air Conditioning Control System (MELANS) 1-1. Summary This chapter explains how to connect the units for constructing the Air Conditioning Control System (MELANS), and the restrictions on them. [1] MA remote controller control line (A control) This method is used when directly connecting an MA remote controller to an indoor unit.
Page 6 2. MA Remote Controller Control Cable Connections and Restrictions 2. MA Remote Controller Control Cable Connections and Restrictions This chapter explains how to connect the MA remote controller and the restrictions which apply. 2-1. MA remote controller control cable type and conductor cross-section area Select a cable which satisfies the conditions below to use for connecting the MA remote controller.
Page 7 2. MA Remote Controller Control Cable Connections and Restrictions 2-3. Example of wiring Connect the MA remote controller control cable to the MA remote controller terminal block of each unit.  The MA remote controller control cable does not have polarity. 2-3-1.
Page 8 2. MA Remote Controller Control Cable Connections and Restrictions 2-3-2. Connecting to a Mr. Slim air conditioning unit The MA remote controller wiring varies depending on the system configuration. Follow the examples below when connecting.  The refrigerant address is set using the DIP switches on the outdoor unit. (For details, refer to the installation manual for the outdoor unit.) ...
Page 9 2. MA Remote Controller Control Cable Connections and Restrictions 2-4. Remote controller main/sub setting When two MA remote controllers are connected in one group, set one as the main remote controller and the other as the sub remote controller. Example: PAR-45MA main/sub setting The setting method varies depending on the remote controller to be used.
Page 10 2. MA Remote Controller Control Cable Connections and Restrictions 2-5. List of supported models The relationships between the product names and models are as shown below. * The remote controller models are current as of December 2023. Product name Model Product name Model PAR-41MAA...
Page 11 3. M-NET Transmission Cable Connections and Restrictions 3. M-NET Transmission Cable Connections and Restrictions Controller models are abbreviated as "AE-C" or "EW-C" in this manual. Units and devices are referred to by their product name in this manual. For their model names, see the Table of product names and models in "3-1-8.
Page 12 3. M-NET Transmission Cable Connections and Restrictions 3-1-1. [Restriction 1] Restriction on M-NET transmission cable type and conductor cross-section area Use a cable which satisfies the following specifications for the M-NET transmission cable and ME remote controller cable. 10 m or less More than 10 m* Shielded cable CVV-S, CPEV-S, MVV-S Type...
Page 13 3. M-NET Transmission Cable Connections and Restrictions [2] Calculating the maximum total cable length (1) Example of unit wiring and calculating the maximum total cable length (1) (When all units support a transmission distance of 1 km (1,000 m)) a: 20 m b: 120 m c: 200 m d: 100 m...
Page 14 3. M-NET Transmission Cable Connections and Restrictions The transmission distance, a distance between the far-end units in the M-NET system, can be calculated based on the wiring length. In this wiring example, the transmission distance between the far-end units is calculated as shown below. (1) Distance between AE-C and IC6 = a: 20 + b: 120 + e: 100 + f: 50 + g: 150 = 440 m (2) Distance between AE-C and IC3 = a: 20 + b: 120 + c: 200 + d: 100 = 440 m (3) Distance between IC6 and IC3 = g: 150 + f: 50 + e: 100 + c: 200 + d: 100 = 600 m...
Page 15 3. M-NET Transmission Cable Connections and Restrictions (4) Example of calculating the maximum total cable length and power supply distance when using an ME remote controller If the wiring length exceeds 10 m when an ME remote controller is used, include the wiring length in excess of 10 m in the power supply distance and maximum total cable length, and design the wiring so as to satisfy the restrictions.
Page 16 3. M-NET Transmission Cable Connections and Restrictions In the example above, the number of repeaters is as follows. In all cases, the restriction that the number of repeaters must be four or less is satisfied. (1) Between system controller (SC) and indoor unit (IC2) = 2 (2) Between system controller (SC) and indoor unit (IC4) = 2 (3) Between indoor unit (IC2) and indoor unit (IC4) = 2 (2) When a transmission booster is connected to the indoor/outdoor transmission line...
Page 17 3. M-NET Transmission Cable Connections and Restrictions (3) Example where the restriction is not satisfied In the wiring example below, the number of repeaters between indoor unit (IC2) and indoor unit (IC4) is five, and the restriction is not satisfied. Review the positions where repeaters are connected to reduce the number of repeaters to four or less.
Page 18 3. M-NET Transmission Cable Connections and Restrictions 3-1-3. [Restriction 3] Restriction on number of connectable units The number of units connected to M-NET (one system) must satisfy the following restrictions.  The maximum number of connected air conditioning units must be 50 or less (when converted to the number of indoor units).
Page 19 3. M-NET Transmission Cable Connections and Restrictions (1) Example of determining the total number of M-NET controlled units Following is an example where the indoor units of a CITY MULTI for buildings are controlled by a main system controller (AE-C/EW-C), sub system remote controller, and ON/OFF remote controller. (1) Number of indoor unit addresses controlled by main system controller AE-C/EW-C = 21 Converted number of e-Series and hot water supply addresses controlled by the same AE-C/EW-C = 3 + 2 Number of PI controller and AI controller addresses controlled by the same AE-C/EW-C = 2 ⇒...
Page 20 3. M-NET Transmission Cable Connections and Restrictions (2) Judgement results of total number of M-NET controlled units Converted Reference Converted Subtotal Controlled remote Number of air number of Number of PI No. in (number of air number of number of controller/ conditioning unit hot water...
Page 21 3. M-NET Transmission Cable Connections and Restrictions 3-1-5. [Restriction 5] Restriction on power supply factor/power consumption factor [1] Summary The restriction on the power supply/power consumption is a restriction related to the power consumed for M- NET communication by the units connected to the M-NET transmission line and to the power supply capacity of the equipment that supplies power to those units.
Page 22 3. M-NET Transmission Cable Connections and Restrictions (2) When supplying power from the AE-C/EW-C When supplying power from the AE-C/EW-C that is connected to the centralized control transmission line, keep the CN21 connector connected. CN21 AE-C rear EW-C rear Note ...
Page 23 3. M-NET Transmission Cable Connections and Restrictions Note  When connecting a system controller, turn the central control switch (SW5-1) to "ON" on all connected outdoor units.  The power jumper is connected to CN41 at the time of factory shipment. [3] Checking the power supply factor and power consumption Check that the power supply factor of the power supply to the M-NET transmission line is equal to or above the total power consumption factor of the connected units.
Page 24 3. M-NET Transmission Cable Connections and Restrictions 3-1-6. [Restriction 6] Restriction on equivalent number of units [1] Summary This is a restriction related to the number of connected units for the purpose of preventing communication errors caused by reduction of signal integrity on the M-NET transmission line. Based on the power consumption factor and equivalent number of units, calculate the total equivalent number of units for all the units that receive electrical power for each power supply system, and design the system so that the restrictions are satisfied.
Page 25 3. M-NET Transmission Cable Connections and Restrictions 3-1-7. [Restriction 7] Restriction on power supply distance [1] Summary The restriction on power supply distance is a restriction to prevent the effects of voltage drops caused by the routing of transmission cables. It is necessary to install a separate power supply unit for the centralized control transmission line and the indoor/outdoor transmission line.
Page 26 3. M-NET Transmission Cable Connections and Restrictions [3] Example of improvement when power supply distance exceeds 200 m For wiring where the power supply distance exceeds 200 m, use the methods below so that the power supply distance is no more than 200 m. (1) When the power supply distance of the centralized control transmission line exceeds 200 m Improvement example 1: Changing the branching position of the centralized control transmission line AE-C/EW-C...
Page 27 3. M-NET Transmission Cable Connections and Restrictions (2) When the power supply distance of the indoor/outdoor transmission line exceeds 200 m Improvement example 1: Branching the indoor/outdoor transmission line can reduce the power supply distance to 200 m or less. AE-C/EW-C Outdoor unit (OC1) Power supply unit...
Page 28 3. M-NET Transmission Cable Connections and Restrictions 3-1-8. Tables [1] Table of product names and models The relationships between the product names and product models referred to in this document are shown below. Product name Product model Air Conditioning Control System AE-C, EW-C System controller AE-200*, AE-50*, EW-50*...
Page 29 3. M-NET Transmission Cable Connections and Restrictions [3] List of power consumption factors and equivalent numbers of units For the power consumption factor of each unit and the equivalent number of units, refer to the table below. Power Equivalent Product name consumption number of units factor...
Page 30 3. M-NET Transmission Cable Connections and Restrictions 3-2. M-NET address / system configuration 3-2-1. Overview of setting the M-NET addresses In order to control air conditioning units and other units with M-NET, it is necessary to assign a unique M-NET address to each unit.
Page 31 3. M-NET Transmission Cable Connections and Restrictions [1] CITY MULTI for buildings The number of connectable units of CITY MULTI for buildings units and the M-NET address range are shown below. Maximum number of connectable M-NET address Method for determining Unit or controller Symbol units in 1 M-NET...
Page 32 3. M-NET Transmission Cable Connections and Restrictions (1) Y Series  When using a single refrigerant system (indoor/outdoor manual address startup) Outdoor unit (OS) Outdoor unit (OC) Group Group Indoor unit (IC1) Indoor unit (IC2) LOSSNAY unit (LC1) CN41 CN41 ..
Page 33 3. M-NET Transmission Cable Connections and Restrictions (2) R2 Series  When using a single refrigerant system (indoor/outdoor manual address startup) Outdoor unit (OS) Outdoor unit (OC) Group Group Indoor unit (IC1) Indoor unit (IC2) LOSSNAY unit (LC1) CN41 CN41 TB7 ◎...
Page 34 3. M-NET Transmission Cable Connections and Restrictions (3) Example of connection using an ME remote controller Outdoor unit (OS) Outdoor unit (OC) Group Indoor unit (IC1) Indoor unit (IC2) LOSSNAY unit (LC1) CN41 CN41 TB7 ◎ ◎ TB7 ◎ ◎ TB5 ◎...
Page 35 3. M-NET Transmission Cable Connections and Restrictions [2] PAC for stores and offices Maximum number of connectable M-NET address Method for determining Unit or controller Symbol units in one M-NET setting range M-NET address system Assign the lowest address to the Simple interface indoor unit to be used as the base (connected by M-NET connection...
Page 36 3. M-NET Transmission Cable Connections and Restrictions [3] Ventilation equipment Maximum number of connectable M-NET address Method for determining Unit or controller Symbol units in one M-NET setting range* M-NET address system LOSSNAY unit (free plan supporting model) Industrial stand-alone humidifying unit (free plan supporting model) Assign the lowest address to Fan/LOSSNAY unit...
Page 37 3. M-NET Transmission Cable Connections and Restrictions [4] e-Series The number of connectable e-Series units and M-NET address range are shown below. An e-Series unit has two control boards that require M-NET address setting. In this manual, the symbols of those boards are "CH"...
Page 38 3. M-NET Transmission Cable Connections and Restrictions 2) Wiring and DIP switch settings AE-C/EW-C (1) System representative unit Sub unit Standard specification control DIP switch settings Power supply unit CN21 CN41 CN41 CN41 CN41 SW2-2 System representative unit None (CH) (CL) (CH) (CL)
Page 39 3. M-NET Transmission Cable Connections and Restrictions 2) Wiring and DIP switch settings AE-C/EW-C (1) System representative unit Sub unit Power supply unit CN21 CN41 CN41 CN41 CN41 (CH) (CL) (CH) (CL) None TB3 ◎ TB2 ◎ ◎ ◎ ◎ ◎...
Page 40 3. M-NET Transmission Cable Connections and Restrictions [6] System controller Maximum number of connectable units M-NET address Method for determining Unit or controller in one M-NET setting range* M-NET address system Air Conditioning Assign 0. 0, 201 to 250 Control System System System remote Assign any address within the range shown...
Page 41 3. M-NET Transmission Cable Connections and Restrictions (2) System remote controller or ON/OFF remote controller Outdoor unit (OC1) Outdoor unit (OS1) Indoor unit (IC1) Indoor unit (IC2) Indoor unit (IC3) CN41 CN41 TB3◎ ◎TB3 TB7◎ ◎TB3 TB5◎ ◎TB15 TB5◎ ◎TB15 TB5◎...
Page 42 3. M-NET Transmission Cable Connections and Restrictions [7] Other related devices Maximum number of connectable units M-NET address Method for determining Unit or controller Symbol in one M-NET setting range* M-NET address system DIDO controller (66) Assign any address within the Other 01 to 50 range shown at left.
Page 43 3. M-NET Transmission Cable Connections and Restrictions (2) PI controller (60) Outdoor unit AE-C/EW-C Power supply unit Indoor unit, etc. CN21 CN41 None TB3 ◎ TB2 ◎ TB7 ◎ ◎ TB5 ◎ ◎ TB15 TB5 ◎ ◎ TB15 M-NET M-NET (Centralized control transmission line) (Indoor/outdoor transmission line) CN17 ◎...
Page 44 4. Expanding the Number of Controlled and Monitored Units Using LAN 4. Expanding the Number of Controlled and Monitored Units Using LAN • Up to 50 indoor units can be controlled and monitored with one AE-C/EW-C (a in the figure below). To control more indoor units or air conditioning units in a remote location, connect AE-C/EW-C via LAN in order to expand the number of units to be controlled and monitored.
Page 45 4. Expanding the Number of Controlled and Monitored Units Using LAN Maximum system configuration diagram Wi-Fi router Indoor unit Outdoor unit M-NET M-NET AE-C (System controller 1) M-NET M-NET M-NET System controller 2 M-NET M-NET M-NET System controller 3 M-NET M-NET M-NET System controller 8...
Page 46 5. Connecting to External LAN 5. Connecting to External LAN By connecting a PC or other device to the AE-C/EW-C via LAN, the number of connected units can be increased. The AE-C/EW-C is equipped with two LAN ports. The purpose of each port is as follows. LAN1: Consolidating connections to other AE-C/EW-C controllers, connecting to a browser PC, or connecting to a PC for the Initial Setting Tool or other peripheral tool LAN2: BACnet connection to a higher-level building management system monitoring tool...
Page 47 6. Connecting to Modbus watt-hour meter 6. Connecting to Modbus watt-hour meter 6-1. Summary By connecting a watt-hour meter that supports Modbus communication, you can collect electric energy data. Scheduled data collection RS-485 (Modbus) AE-C/EW-C Watt-hour meter (Modbus (RS-485) compatible) 6-2.
Page 48 New publication effective Aug. 2024 MEES24K001 Specifications subject to change without notice...

This manual is also suitable for:

Ae-c400a Ew-c50a Ae-c400e Ew-c50e Ae-c400e-x Ew-c50e-x