MEAN WELL MWCMU3 Multi-Industry General Purpose Smart User Manual

CMU3

Pragramable Intelligent Smart UI

Userʼs Manual

Multi-Industry General Purpose Smart Controller

Communication

NFC

OFF

Internet

Status

USB-C

Reset

Internet

Status

USB-C

Reset

CMU3

OFF

Preliminary

CMU3 is an advanced industrial controller designed to integrate industrial, commercial,

and residential systems, enhancing operational efficiency, energy management, and

system reliability. It provides User-defined Automation Control for flexible and

coordinated control of lighting, air conditioning, security, and other building systems.

monitoring of inverters, power supplies, PV systems, and third-party devices through a

unified interface. Its comprehensive energy management capabilities support real-time

monitoring of equipment power consumption, energy consumption reporting, and

performance optimization to improve overall energy efficiency. CMU3 also supports fault

diagnosis and system and device update notifications, helping users quickly identify

system issues and stay informed of the latest updates. With flexible control, integrated

management, and intelligent monitoring capabilities, CMU3 is an ideal solution for a

wide range of industrial, commercial, and residential applications.

Preliminary

Contents

1.Safety Guidelines

1.1 Safety Warnings and Cautions

2. Introduction

2.1 Model Encoding

2.2 Features

2.3 Specification

2.4 Mechanical specification

2.5 Supported models

3.User Interface

3.1 Panel Description

3.1.1 Panel Description-Front

3.1.2 Panel Description-Back

3.2 LED Indicator

3.3 DC IN Connector Pin No. Assignment

3.4 CANbus Connector Pin No. Assignment

3.5 RS-485 Connector Pin No. Assignment

3.6 RELAY Connector Pin No. Assignment

3.7 Prog. DIO Connector Pin No. Assignment

3.8 PMBus Connector Pin No. Assignment

3.9 LAN Connector Pin No. Assignment

3.10 Recommended Screwdriver, Wire and Torque Setting

4.Installation

4.1 Device Mounting

4.1.1 Desktop Type

4.1.1.1 Horizontal Mounting

4.1.1.2 Din Rail Mounting

4.1.2 Rack mount Type

4.2 Mini PCIe Installation

4.3 System Configuration

5.User Interface

5.1 Login Page

5.2 Home Page

5 3 Application. Card Management

5.3.1 Information Card Editing

5.3.2 Chart Card Editing

5.3.3 Connection Status Card Editing

Preliminary

Contents

2026.09Ver0

5.4 Comm Page

5.4.1 Comm Port Settings

5.4.1.1 LAN1/LAN2 (LAN Network) Settings

5.4.1.2 WLAN (Wireless Network) Settings

5 4 1 3. . . CAN1/CAN2 (CAN Bus Interface) Settings

5.4.1.4 RS-485(1)/RS-485(2) (Modbus Interface) Settings

5.4.1.5 REL1/REL2(Relay Output) Settings

5.4.2 Protocol Management

5.4.2.1 Protocol Creation Process

5.5 Manage Page

5.5.1 User Management

5.5.2 System Log

5.5.3 Application Management

5.5.3.1 Application Management Interface

5.5.4 System Status Monitoring

5.5.4.1 Time & Time Zone Settings

5.5.4.2 System Uptime / Users

5.5.5 LOG Management

5.5.6 System Update

5.5.7 System Image Replacement

6. Module

6.1 INV_Module (Inverter Module)

home page 6.1.1 NTN

6.1.2 System Settings: Charger Settings

Inverter Settings 6.1.3 System Settings:

6.1.4 Model Management: Link Status

6.1.5 Model Management: Monitoring Report

6.1.6 Shortcut Settings

Preliminary

1. Safety Guidelines

 Risk of electrical shock and energy hazard, all failure should be examined by a

qualified technician. Please do not remove the case from the controller by

yourself.

 Please do not install the contorller in places with high moisture, high ambient

temperature or under direct sunlight.

 The input range is 10Vdc – 28Vdc, please do not connect the unit to voltages

out of the range.

 The safety protection level of this is Class I. The unit's frame controller

ground ( ) must be properly connected to PE (Protective Earth).

1.1 Safety Warnings and Cautions

 BSMI: For models certified as Class A equipment, should not be installed

or used in a residential environment to avoid electromagnetic

interference.

 FCC Compliance Statement Compliance Notice:

This equipment has been tested and found to comply with the limits for a

Class A digital device, pursuant to part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference

when the equipment is operated in a commercial environment. This

equipment generates, uses, and can radiate radio frequency energy and, if

not installed and used in accordance with the instruction manual, may cause

harmful interference to radio communications. Operation of this equipment

in a residential area is likely to cause harmful interference in which case the

user will be required to correct the interference at his own expense.

This device complies with FCC Rules Part 15 rules.

Operation is subject to the following two conditions:

1. This device may not cause harmful interference.

2. This device must accept any interference received, including interference

that may cause undesired operation.

Changes or modifications that are not expressly approved by the

manufacturer could void the user's authority to operate the equipment.

To comply with FCC RF exposure compliance requirements, the device

should be located at a distance of at least 20cm from all persons during

normal operation. The antennas used for this product must not be co-

located or operated in conjunction with any other antenna or transmitter.

Preliminary

GCMU3

Series name

G: Global version

Blank: Chinese version

-R: Rack mount Type

Blank: Desktop Type

R-

2. Introduction

2.1 Model Encoding

2.2 Features

 Panel-free design with external display connectivity & smartphone

APP control. (Download APP via QR code above.)

 MW NEXUS-driven APP platform for integrated management of

inverters, power supplies, PV systems, and third-party devices

 User-defined automation control for voltage/current adjustment,

power on/off control, and scheduled operations

 Built-in PMBus, CAN bus, RS-485 (Modbus), and Ethernet

communication interfaces

 Compatible with multiple network protocols, including Modbus TCP

and Web API

 5 years warranty

Preliminary

2.3 Specification

SPECIFICATION

VOLTAGE RANGE

EXPANSION SLOT

COMMUNICATION

WIRELESS COMMUNICATION

RELAY

MEMORY & STORAGE

CURRENT

PROGRAMABLE DIGITAL INPUT/OUTPUT

PUSH BUTTON

MONITORING TELEMETRY

THIRD-PARTY DEVICE SUPPORT Note.1

HARDWARE

INPUT

FUNCTION

COMMUNICATION PROTOCOLS

ETHERNET SUPPORTED

ENVIRONMENT

SAFETY & EMC (Note. 2)

OTHERS

REGULATORY COMPLIANCE

NOTE

HDMI FOR MONITOR CONNECTION

PROCESSOR

WORKING TEMP.

WORKING HUMIDITY

PMBUS

OTA (Over The Air)

LOG

NFC CONNECTIVITY

ETHERNET

CANBUS

RS-485

LANGUAGE

NETWORK

WEB SERVER

PROTOCOLS

STORAGE TEMP., HUMIDITY

VIBRATION

DIMENSION

MTBF

PACKING

-25 ~ +60℃

20 ~ 90% RH non-condensing

Customizable APP home page content and items. Refer to the user manual for details

Supports third-party device integration via compatible communication interfaces and protocols. Refer to the user manual for details

PMBus v1.1

Firmware updates via Ethernet for system firmware and application software

1.Data log (device status) 2.Event log (alarm, AC anomalies, etc.) 3.System log (system status, warnings, version information, etc.)

4.Log interval can be set from 1 minute to 60 minutes 5.Selectable log options (ALL, voltage, current, etc.)

Built-in web interface for system monitoring, configuration, and operation status

Supports NFC for reading device parameters using compatible NFC-enabled devices

CANbus 2.0B

Modbus RTU

English, Traditional Chinese / Simplified Chinese / Japanese (Other languages are available upon request.)

Support IEEE802.3, 10/100base network x 2

TCP/IP, NTP, Modbus TCP

Built-in MEAN WELL's NEXUS platform for displaying system status, parameters, and recorded or downloaded data

For details of additional functions, refer to the user manual

-40 ~ + ℃，10~95% RH non-condensing80

10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes

CMU3G: 694.6K hrs min. Telcordia SR-332 (Bellcore) ; 85.45K hrs min. MIL-HDBK-217F (25℃)

CMU3G-R: 694.6K hrs min. Telcordia SR-332 (Bellcore) ; 85.5K hrs min. MIL-HDBK-217F (25℃)

1.03Kg; 10pcs/11.3Kg/1.47CUFT

Desktop: 192*178*45.5mm (L*W*H) Rack mount: 482*186.6*44.5mm (L*W*H)

2.04Kg; 6pcs/13.2Kg/2.49CUFT

IEC62368-1 approved

IEEE 802.11 b/g/n

2.4 GHz

10 ~ 28Vdc

Mini PCIe × 1 (Reserved; available upon request. Please refer to user manual and contact MEAN WELL for customization.)

1.RS-485(Modbus)*2 2.CANbus*2 3.PMbus*1 4.Ethernet*2 5.USB2.0: TYPE-C*1 TYPE-A*2、

1.Wi-Fi (802.11b/g/n) 2.4 GHz 2.NFC for MW App

1.5A / 24Vdc

HDMI 2.0 interface

Rockchip RK3568J

HDMI 1.4 interface

NXP i.MX 8M Plus Dua

2 Groups, Relay Contact Rating: 30 VDC / 1 A

Programmable via User-defined Automation Control or the APP platform

4 configurable digital I/O channels; digital outputs use open-collector architecture

1. ON/OFF button : Enables or disables all connected devices (PSUs, chargers, and inverters) simultaneously

2. Reset button: Press to reboot CMU3 and restore all configurations to factory default settings. Refer to the user manual for details.

SAFETY STANDARDS

WIRELESS STANDARD

FREQUENCY BAND

EMC EMISSION

EMC IMMUNITY

CMU3 CMU3-R CMU3G CMU3G-R



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※：https://www.meanwell.com/serviceDisclaimer.aspx

1. RAM : 2G(DDR4) 2. eMMC : 16G

Parameter

Conducted

Radiated

BS EN/EN55035(CISPR35)

Standard

BS EN/EN61000-4-2

BS EN/EN61000-4-3

BS EN/EN61000-4-4

BS EN/EN61000-4-5

BS EN/EN61000-4-6

BS EN/EN61000-4-8

BS EN/EN55032(CISPR32),CNS 15936,

GB/T 9254.1, FCC

BS EN/EN55032(CISPR32),CNS 15936,

GB/T 9254.1, FCC

Test Level / Note

Level 3, 8KV air ; Level 2, 4KV contact

Level 2, 3V/m

Level 1, 0.5KV

Level 1, 0.5KV/Line-Earth ;

Level 2, 0.5KV/Line-Line

Level 2, 3V

Level 1, 1A/m

Class B

Class A

ESD

Radiated

EFT / Burst

Surge

Conducted

Magnetic Field

CE (RED) / FCC / NCC / SRRC approved CE (RED) / FCC / NCC approved

Preliminary

Unit: mm

Desktop Type

2.4 Mechanical specification





45.5 4.3192

178

OFF

 

 



 

USB

HDM I

PMB us

Exp ansio n Slot

Pro g. I/O

LAN

1 2 3 4

DIO DI O

DIO

-Vi n

+Vi n

10~ 28Vdc

CAN Bus

H L G H L G

120Ω

RS- 485

D+ D- G D+ D- G

Rel ay

NO NC C NO NC C

ANT

1 2 3 4 5 6 7 8

- - - -

R.C.

SDA

SCL

G=GN D_AUX

C=CO M

DC IN

8 8

1 1

USB

HDMI

PMBus

Expansion Slot

Prog. I/O

LAN

1 2 3 4

DIO DIO

DIO

-Vin

+Vin

10~28Vdc

CANBus

H L G H L G

120Ω

RS-485

D+ D - G D + D- G

Relay

NO NC C NO NC C

ANT

1 2 3 4 5 6 7 8

- - - -

R.C .

SDA

SCL

G=G ND_ AUX

C=C OM

DC IN

Preliminary

Unit: mm

Rack mount Type

ψ7.3

186.6

3.4

67.6

482

8.5

465

3.2

22.7

44.5

Cable Length:1000 5mm±

Antenna

 

 



 

CMU3





8 8

1 1

PMB us

Exp ansio n Slot

Pro g. I/O

1 2 3 4

DIO DIO

DIO

Rel ay

C NO NC C

ANT

USB

HDM I

LAN

-Vi n

+Vi n

10~ 28Vdc

CAN Bus

H L G H L G

120Ω

RS- 485

D+ D - G D+ D - G

NO N C

1 2 3 4 5 6 7 8

- - - -

R.C.

SDA

SCL

G=GN D_AUX

C=CO M

DC IN

1 1

USB

LAN

-Vin

+Vin

10~28Vd c

CANBus

H L G H L G

120Ω

G=GND_ AUX

C=COM

DC IN

PMBus

Expansi on Slot

Prog. I/O

1 2 3 4

DIO DIO

DIO

Relay

C NO N C C

ANT

HDMI

RS-485

D+ D- G D + D- G

NO N C

1 2 3 4 5 6 7 8

- - - -

R.C .

SDA

SCL

Preliminary

Accessory List Single Unit ( )

2.5 Supported models

←

DC-AC Inverter

AC DC Inverter

AC-DC Power

Supply

NTN-5K

BIC-5K, NTG-7K5, NTG-20K

BIC-2200, HEP-1000, HEP-2300, MSP-1600, NSP-1000,

NSP-1600,NSP-2400, NSP-3200, PHP-3500, RCP-2000,

RSP-1600, SHP-10K, SHP-30K, UHP-1500, UHP-2500

CategoryApp icon Supported Model

Note: For models not listed in above table, please contact MEAN WELL sales team.

Available

Coming soon

Status

Din Rail Plate

For desktop version

DC IN Connector

DINKLE 2ESDVM-03P

Communication

Connector

DECA MX422-25406

1pcs/per model

6pcs/per model

No. QuantityItem

Preliminary

3.1.1 Panel Description-Front

3.User Interface

3.1 Panel Description

Power Indicator: Used to display whether the CMU3 is powered on.

Alarm Indicator: The indicator will light up when an abmomral condition occurs.

Internet Status Indicator.

System Swtich: 0 (OFF): Disables the outputs of all connected products directly through the communication interface.

USB-C ports.

1 (ON): Output control is determined by the module page. The corresponding ON/OFF commands

are then transmitted to the connected products through the communication interface.

Reset Button.: Press and hold the Reset Button for 10 seconds to restore the factory default settings.

NFC Detection Area.

Speaker.

Antenna.

NOTE: The System Swtich canno be used to turn the controller off.

Internet

Status

Desktop Type

Rack mount Type

BH E

DG F

Internet

Status

Internet

Status

 Deletes all non-default communication protocols.

 Deletes all user accounts and user settings.

 Clears the Data Log and Event Log.

NOTE: Restoring the factory default settings will reset the network IP address to its

default value, which may cause the current connection to be lost. Please

ensure that you understand the impact before proceeding with the factory

reset.

Preliminary

DIN (DC input): DC input range: 10 – 28VDC.

DIP Swtich for the Termination Resistors: Used to set the termination

resistors for the CAN bus and Modbus interfaces.

USB and HDMI: Used to connect peripheral devices.

Expansion Slot: Used for functional expansion; supports mini PCIe.

Desktop Type

Rack mount Type

3.1.2 Panel Description-Back

3.2 LED Indicator

LED Status Description

=Power connected

=Booting

=No power connected

Power Indicator

The power indicator lights up orange

when the system is first powered on.

Once the system is ready and operating

normally, the indicator turns steady

green.

=Normal operating

=Abnormal status

Alarm Indicator

Ethernet connection status.

CMU3 or Rack Power in abnormal conditions.

CMU3 is in a normal condition.

Internet Status

A B D

= Internet unstable

x 3 times repeatedly = AP Mode

=Internet stable

=steady =flashing

Preliminary

Pin No.

Connect Pin No. Assignment: or equivalentDINKLE 2ESDVM-03P

Function

+Vin

-Vin

Description

Frame Ground (Protective Earthing)

DC power supply positive input

DC power supply negative input

+Vin-VinFG

3.3 DC IN Connector Pin No. Assignment

DC IN

Preliminary

Pin No.

CANbus1

CANbus2

Function

CAN-H

CAN-L

GND_AUX

Description

High-level CAN bus line (Note 1)

Low-level CAN bus line (Note 1)

CMU3G Auxiliary Power Reference Ground (Note 2)

3 31 1

3 3

1 1

CAN-H CAN-H

CAN-L CAN-L

GND_AUX GND_AUX

Note 2: GND_AUX is the reference ground for the CMU3 auxiliary power supply

and is isolated from the DC power supply (+Vin & -Vin).

Note 1: Isolated signal, with GND_AUX as reference

3.4 CANbus Connector Pin No. Assignment

Connect Pin No. Assignment: or equivalentDECA MX422-25406

CANbus1 CANbus2

Preliminary

D+

D-

GND_AUX

RS-485 Differential Signal Plus (Non-inverting)(Note 1)

RS-485 Differential Signal Minus (Inverting)(Note 1)

CMU3 Auxiliary Power Reference Ground(Note 2)

3 31 1

3 3

1 1

D+ D+D- D-

GND_AUX GND_AUX

3.5 RS-485 Connector Pin No. Assignment

Connect Pin No. Assignment: or equivalentDECA MX422-25406

Note 2: GND_AUX is the reference ground for the CMU3 auxiliary power supply

and is isolated from the DC power supply (+Vin & -Vin).

Note 1: Isolated signal, with GND_AUX as reference

Pin No.

Function

Description

RS-485(1)

RS-485(2)

RS-485(1) RS-485(2)

Preliminary

3 31 1

3 3

1 1

Relay1

-COM

Relay2

-COM

Relay1

-NC

Relay2

-NC

Relay1

-NO

Relay2

-NO

Relay1

Relay2

Relay1-NO

Relay2-NO

Relay1-NC

Relay2-NC

Relay1-COM

Relay2-COM

Normal-open contact of programmable relay1

Normal-open contact of programmable relay2

Normal-close contact of programmable relay1

Normal-close contact of programmable relay2

Common for relay1 NO/NC contact

Common for relay2 NO/NC contact

3.6 RELAY Connector Pin No. Assignment

Connect Pin No. Assignment: DECA MX422-25406 or equivalent

Pin No.

Function

Description

Relay1

Relay2

Preliminary

DIO0

DIO1

DIO2

DIO3

GND_AUX

Programmable digital input/output (Note 1)

CMU3G Auxiliary Power Reference Ground (Note 2)

3.7 Prog. I/O Connector Pin No. Assignment

Connect Pin No. Assignment: or equivalent DINKLE 141R-05

Pin No. Function Description

Note 2: GND_AUX is the reference ground for the CMU3 auxiliary power supply

and is isolated from the DC power supply (+Vin & -Vin).

Note 1: Isolated signal, with GND_AUX as reference

1 5

DIO0 DIO1 DIO2

GND_AUX

DIO3

Prog. I/O

Preliminary

Pin No.

1,2,3,5

Function

CONTROL

SDA

SCL

GND_AUX

Description

Not use

Remote ON/OFF control pin (Note 1)

Serial Data used in the PMBus interface (Note 1)

Serial Clock used in the PMBus interface (Note 1)

CMU3G Auxiliary Power Reference Ground (Note 2)

3.8 PMBus Connector Pin No. Assignment

Connect Pin No. Assignment: RJ45 8 position

Note 2: GND_AUX is the reference ground for the CMU3 auxiliary power supply

and is isolated from the DC power supply (+Vin & -Vin).

Note 1: Isolated signal, with GND_AUX as reference

PMBus

1 8

SDA

GND_AUX

NC NC SCLNC CONTROLNC

Preliminary

TX+

Pin No.

4,5,7,8

Function

TX+

TX-

RX+

RX-

Description

Transmit data used in the Ethernet interface

Receive data used in the Ethernet interface

Not used

11 88

TX-RX-NC NC RX+NC NC

3.9 LAN Connector Pin No. Assignment

Connect Pin No. Assignment: RJ45 8 position

LAN( 1)

LAN(2)

LAN( 1) LAN( 2)

Preliminary

Type The input connector

CANbus1/2

MODbus1/2

Relay1/2

Recommended

tightening

torque(N.m)

Screwdriver

Wire stripping

length(mm)

AWG 12-20 14-28

7-8 6-7

M2.5 M2

0.4-0.5 0.2-0.25

3.10 Recommended Screwdriver, Wire and Torque Setting

Preliminary

Horizontal Mounting

Din Rail Mounting

4.1.1 Desktop Type

4.1.1.1 Horizontal Mounting

4.1.1.2 Din Rail Mounting

M3 Nylok Screw*3

(Recommended

mounting torque: 6~8Kgf-cm)

4.Installation

4.1 Device Mounting

Preliminary

4.1.2 Rack mount Type

M5*12mm













1.The Mini PCIe socket is located on the mainboard. Remove the cover first

to access the socket.

2. insert the Mini PCIe card into the connector.After the cover is removed,

Insert the

card at an angle

4.2 Mini PCIe Installation

Preliminary

3.Push down on the other end of the Mini PCIe card and secure the card

on the mainboard with the provided mounting screw.

4. If the mini PCIe card comes with an additional accessory, secure it in the

areas marked in red.

If not, simply reinstall the cover to complete the installation.

(Recommended mounting torque: 4~5.5Kgf-cm)

M2 mounting

screw.

(Recommended

mounting torque:

1.79~4.28Kgf-cm)

Preliminary

The CMU3 can be flexibly connected to corresponding devices to form a

complete system. Its communication interfaces are highly versatile,

supporting common protocols such as PMBus, CAN bus, and Modbus, for

controlling and monitoring relevant equipment (for example, Mean Well

power products). In addition, the CMU3 can connect to smartphones,

tablets or computers via Ethernet, Wi-Fi, or NFC to enable remote

monitoring, or use interfaces such as HDMI and USB to establish an on-site

monitoring platform.

Using the NTN-5K Energy Monitoring System as an example, the CMU3

can control and monitor the NTN-5K via CAN bus, displaying relevant

information on a mobile device. The following provides an example

system description for this setup.

Devices

(e.g. MeanWell products)

Ethernet

PMBus/ CAN bus/ Modbus

CAN bus

WiFi/NFC

WiFi

HDMI

USB

NTN-5K

4.3 System Configuration

Preliminary

During initial power-up, the CMU3 requires IP address configuration to

establish a network connection for remote monitoring and control. Two

configuration methods are available:

Method 1: Direct configuration via a monitor and keyboard.

Method 2: Configuration using a mobile application, as described below.

The CMU3 is a highly configurable controller that allows users to customize

monitoring parameters and display pages. Once access to the CMU3

operating interface, please refer to the online user manual for completing

the remaining setup for the required monitoring and control functions.

● Preparation

Your mobile device must support NFC and have the MEAN WELL APP

installed. If the app is not yet installed on your device, please scan the

following to download: iOS APP | Android APP | Android APP

● Compatible Mobile Devices

Android: Android OS 4.1 (API 16) or later.

iPhone: iOS 12 or later.

● Configuration Steps

1. Download the MEAN WELL APP on your mobile device and enable the NFC

function.

2. Open the app and then tap "CMU3" button to start scanning for tags.

Location of "CMU3" button: tap the "manual icon" in the upper left corner

on the main page of the app, tap "Installation Manual/APP" button you

will see it just sits on the bottom.

3. Hold the device near (< 5cm) the NFC Tag of the controller. For iPhone,

hold the top-center of your phone onto the tag. For Android, place

backside-middle of the phone onto the Tag. If it doesn't work you may

refer to its instruction manual.

iOS APP Android APP Android APP

NFC

5.User Interface

5.1 Login Page

Preliminary

NOTE:

1.MW APP會記錄已設定的設備資訊，後續可以MW APP快速連接至已設定過的

CMU3。

2.「初次連線」適用於首次使用的 CMU3。CMU3 預設為 AP 模式，使用「初次連

線」功能可讓 MW APP 與 CMU3 連線至同一網路。如果CMU3 的網路設定已變

更，請使用「快速連線」功能。若連線失敗，請確認使用的行動裝置是否與

CMU3 連線至同一網路。

Preliminary

● Login Page

The login page will be displayed when accessing the CMU3 unit.

First-time users are required to apply for an account.

NOTE:

1. The CMU3 starts in AP Mode by default. Connect your mobile device to its Wi-Fi network

to begin setup, the default WiFi name is: CMU3_AP_xxxx. The password is: 12345678. After

connecting, the default homepage URL is: 192.168.4.1:5039.

2. If the default IP has been modified, the homepage URL must include the new IP followed

by :5039. For example: if the IP is 192.168.200.105, then the homepage URL would be

192.168.200.105:5039.

Display Language

The CMU3 supports English, Traditional Chinese, and Simplified Chinese. The CMU3 will

automatically adapt to the appropriate language based on the browser you are using. If the

browser language is not supported, the CMU3 will default to English. On mobile devices,

Android uses the browser's language settings, while iOS uses the system language or the

browser's preferred language settings to determine the display language.

● iOS devices: The NFC function is enabled by default, and no additional

user settings are required. The NFC antenna is typically located at the top

of the device.

● Android devices: The NFC function must be manually enabled in the

system settings. As NFC antenna placement varies by brand and model,

there is no standard location.

● If any NFC-related issues occur during operation, it is recommended to

contact the device manufacturer or refer to the user manual for the

specific model.

Preliminary

After logging in, users can access the home page. On the home page,

users can perform functions such as app search, notification review, and

mode switching.

Apps or related applications can be installed through Application Management

on the Manage page. For more details, please refer to Section 5.5.3.

App: This is the home page, where you can search for modules, view the event log,

switch light/dark mode, and perform other related functions.

Comm: Used to manage the CMU3 communication protocols, including importing

and editing protocols. Refer to Section 5.4 for details.

Manage: This page allows you to manage and configure user Management, System

Logs, Application Management, Resource Management & Monitoring, LOG

Management, System Update, Power Product Updates, and system image

replacement, Audio Settings, Background System Settings and Custom

Footer Links. Refer to Section 5.5 for details.

5.2 Home Page

No.

Description

Member Center: Used to manage personal information,

such as changing the password.

Notifications: Event log that records the operating status

of the app.

Mode Switch: Toggle between light mode and dark mode.

Logout Button: Logs out the current user.

App search. Supports both basic search and advanced search.

Single-click (tap once) the app image to open.

Preliminary

On , users can freely customize the module pages, such as INV_module

information, charts, and connection status to create a personalized

interface. The editing functions are located in the upper-right corner of

the page.

5.3.1 Information Card Editing

After adding an information card, the new card will appear on the page.

Click the icon in the upper-right corner of the card to select

" " or " "EDITCARD DELETE CARD

Edit Cards:Used to enable/disable the editing mode. When

Edit Cards is enabled, the Add Card, Restore Default

Cards and Save Card Layout options will appear on

the page. Cards on the page will display the icon,

indicating these cards are allowed to be modified.

Click the edit mode icon again to exit edit mode.

Add Card: Used to add new cards. Three types of cards are

available: Information, Chart, and Connection

Status.

Save Card Layout: Used to save the edited page. After making

changes, be sure to click this icon to avoid

losing any modifications.

: Restore the default card configuration Restore Default Cards

and overwrite all current card settings.

...

5.3 Application Card Management

Preliminary

After selecting , you can name the card, add contents and EDIT CARD

change the icons.

Preliminary

After adding content, click Edit button to open the “Value and

Command Settings” window.

Repeat the - steps to complete cards with specific

functionality. Example: A card displaying the AC input/output

voltage and frequency of an NTN-5K-224CAN (address 0).

Note: Up to 4 different items can be displayed simultaneously.

4 2 3

Preliminary

5.3.2 Chart Card Editing

After adding a chart card, the new card will appear on the page.

Click the icon in the upper-right corner of the card to select

"EDITCARD" or "DELETE CARD".

After selecting , you can name the card and add EDIT CARD

curve data.

...

Preliminary

To configure the chart curves, click the card to enter a Select

Device and Command window and choose the desired device

and parameters to display.

Preliminary

After selection, a window will appear where Display Settings

you can edit the curve name, set displaying axis and select data-

color.

Repeat the - steps to complete a card with specific

functionality.Example: A chart displaying battery voltage and

current curves of the NTN-5K.

Note: Up to 2 curves can be displayed simultaneously.

5 2 4

Time

Preliminary

5.3.3 Connection Status Card Editing

After adding a connection status card, the new card will appear on

the page.

Click the icon in the upper-right corner of the card to select

" " or "DELETE CARD".EDITCARD

After selecting DELETE CARD, you can change the card icon and

name the card.

...

Preliminary

Once completed, the card will display the connection status between

the NTN-5K and other devices.

5.3.4 Card Movement

In the editing mode, application cards can be repositioned to suit

your preferences.

Desktop Version:

1 Click and drag the desired card.

Preliminary

 2 Release the card when it reaches the desired position.

Mobile Version:

1 Tap Order in the red box

Preliminary

 2 The page will display all editable cards. Then tap to set the

cards to the desired position.

Preliminary

The Comm page is used to configure the CMU3's communication

protocols, channels, and thresholds with external devices to ensure

smooth and secure data exchange.

5.4 Comm Page

No.

Description

The Protocol Management page is used to edit and import

communication protocols from third party's devices.

The CMU3 supports various communication interfaces

(including CAN bus, RS-485, PMBus, Ethernet, etc.) and

network protocols (e.g., Modbus TCP, Web API, Matter).

The icons on this page correspond to the physical

communication ports on the CMU3. Click an icon to configure

the protocol settings for that port.

5.4.1 Comm Port Settings

Users can configure the communication port by selecting the

corresponding port icon. Parameters such as the baud rate can be

adjusted according to specific requirements. Please refer to the

description of each port for detailed information.

Preliminary

5.4.1.1 LAN1/LAN2 (LAN Network) Settings

This page is used to configure the accessing parameters of LAN1/ LAN2,

including IP address, DNS servers, and routing rules.

1. Interface Control

 Enable this interface

o ON ( ): Enable LAN and start packet transmission

o OFF ( ): Disable the port

2. Interface Name

 Interface Name: Read-only

 Note: For optional user-defined description (e.g., "Internal Network",

"External Network")

3.IP Acquisition Method

 DHCP (Auto)

o Suitable for environments connected to standard routers or

switches. The system will automatically request an IP address from a

DHCP server.

 Static (Manual)

o Suitable for server environments or specific network segments that

require a fixed IP address. When selected, the following fields must

be configured:

o IPv4 Address: Enter the assigned static IP address (e.g., 192.168.1.1)

o Subnet Mask: Enter the subnet mask to define the network range

(e.g., 255.255.255.0)

Preliminary

5.4.1.2 WLAN (Wireless Network) Settings

o Gateway: Enter the default gateway IP address, which is usually the

router's IP (e.g., 192.168.1.54).

4.DNS Server Settings

Configure to ensure the system can Domain Name System (DNS) servers

translate domain names (e.g., www.google.com) into IP addresses.

 DNS 1: Primary DNS server IP (e.g., 203.79.200.1).

 DNS 2 (Optional): Secondary DNS server, used when the primary

server is unavailable.

5. Routing Settings (Critical Setting)

 Set as as Default Gateway :

o Function: When enabled, all traffic outside the local network (i.e.,

Internet traffic) will be routed through this interface by

default.

o Note: Only one network interface can be set as the default gateway.

If multiple interfaces are used (e.g., Ethernet 1, Ethernet 2, or

Wi-Fi), ensure that this option is enabled only on the primary

external connection interface. Otherwise, routing conflicts

may occur, resulting in network connectivity issues.

6. Save All Settings

 After confirming that all configurations are correct, click this button to

apply the changes. The network connection may briefly reconnect.

Preliminary

This page is used to configure the operating mode and connection parameters of

the wireless network interface (Wi-Fi).

1. Interface Control

 Enable WLAN:

o ON ( ): Enable WLAN and start packet transmission

o OFF ( ): Disable the port

2. Operation Mode

 Wi-Fi Mode (Connect to existing hotspot)

o Function: Connects to an existing Wi-Fi router or hotspot.

 AP Mode (Create hotspot)

o Function: operates as an access point allowing wireless-capable devices

(e.g., smartphones, tablets) to connect to the device.

o Use Case: Suitable when no network is available on-site or for initial setup

using the MW App.

3. Wi-Fi Mode Settings (Only available in Wi-Fi Mode)

 SSID: Enter the Wi-Fi network name to connect to

o Scan Button: Click Scan to display a list of available nearby Wi-Fi " "

networks

 Password: Enter the Wi-Fi password

 Auto Reconnect:

o When enabled, the system will automatically attempt to reconnect if the

connection is lost due to unstable signals

4. IP Assignment Method

Configure how the IP address is assigned after connecting to Wi-Fi:

 DHCP (Auto obtain IP)

o The router automatically assigns an IP address

 Static IP (Manual sepcify)

o Suitable for environments requiring a fixed IP

o IP Address: Enter the assigned static IP (e.g., 192.168.1.1)

o Subnet Mask: Define the network range (e.g., 255.255.255.0)

o Default Gateway: Enter the router IP (e.g., 192.168.1.254)

o Primary / Secondary DNS: Domain Name System (DNS) server

5. Routing Settings

 As Default Gateway:

o Function: Determines the primary path for external network (Internet)

access

o Configuration Rule: Only one interface can be selected

 If using wired network (LAN1) as the main connection → uncheck this

option

 If using Wi-Fi as the main connection → enable this option

6. Save All Settings

After confirming that all configurations are correct, click this button to apply the

changes. The network connection may briefly reconnect.

Preliminary

This page is used to configure the operating mode, communication

parameters (such as Baud Rate and CAN Protocol Type), and protocol

binding for devices connected to the CAN1/CAN2 port.

1. Mode Selection

 Default Mode

o Use Case: Suitable for MW devices

o Fixed Parameters:

 CAN Protocol: 2.0B

 Baud Rate: 250K

 Transmission Interval: 50 ms

 Custom Mode

o Use Case: Used when field devices require specific baud rates (e.g., 500K,

1M) or a different protocol type.

o Description: When selected, detailed parameter settings (as described

below) will be available for manual configuration

2. Communication Parameters (Only available in custom mode)

When Custom Mode is selected, configure the following parameters to

ensure proper communication with connected devices

 CAN Protocol Type: Select the CAN protocol type, 2.0B or 2.0A.

 Baud Rate: Set the communication speed (e.g., 250K, 500K)

3. Custom Protocol Binding

This section is used to bind communication protocols to devices.

Protocol File: Select the corresponding device driver file (JSON format, e.g.,

PSU_CAN.json) from the dropdown list

5.4.1.3 CAN1/CAN2 (CAN Bus Interface) Settings

Preliminary

 Start Address: Enter the starting CAN ID or Station ID of the device.

 Continuous Device Count: Specify the number of consecutive

devices with sequential IDs.

o Example: If the start address is set to 1 and the device count is 3,

the system will automatically bind devices with ID 1, 2,

and 3.

 Enable Log Recording:

o When enabled, detailed communication data of the device will be

recorded in the system log.

 Action Buttons:

o Add a binding: Add a new device binding entry.

o Delete: Remove the selected entry.

4. Save All Settings

Apply and save all configurations. The system will write the settings and

reinitialize the CAN communication port.

5.4.1.4 RS-485(1)/RS-485(2) (Modbus Interface) Settings

This page is used to configure the transmission parameters of RS-485(1)/RS-

485(2) typically for connecting Modbus RTU devices.

1. Mode Selection

Please select one of the following operating modes based on the

hardware device specifications:

 Default Mode

o Use Case: Suitable for devices using MW standard communication

specifications.

o Description: Communication parameters are fixed and cannot be

modified.

Preliminary

o Fixed Parameters:

 DataBits: 8 bit

 StopBits: 1 bit

 Parity: None

 BaudRate: 115200

 Interval: 50ms

 Custom Mode

o Use Case: Used when devices require non-default baud rates or

parity settings.

o Description: Enables detailed parameter configuration for manual

adjustment to match the device.

2. Communication Parameters (only available in custom mode)

 Data Bits: Defines the data length of each packet (typically 8 bits for

Modbus RTU).

 Stop Bits: Defines the length of the stop bit (commonly 1 or 2 bits).

 Parity: Error-checking method.

o None: No parity.

o Even: Even parity.

o Odd: Odd parity.

 Baud Rate: Communication speed (e.g., 9600, 19200, 38400, 115200).

 Transmission Interval (ms): Polling interval in milliseconds (default:

50 ms).

3. Custom Protocol Binding

This section is used to bind communication protocols to devices.

 Protocol File: Select the corresponding device driver file (JSON

format, e.g., PSU_CAN.json) from the dropdown list.

 Start Address: Enter the starting Modbus ID or Station ID.

 Device Count: Specify the number of consecutive devices with

sequential IDs.

o Example: If the start address is set to 1 and the device count is 3,

the system will automatically bind devices with ID 1, 2,

and 3.

 Enable Logging:

o When enabled, detailed communication data will be recorded in

the system log.

 Action Buttons:

o Add a binding: Add a new device binding entry.

o Delete: Remove the selected entry.

4. Save All Settings

Apply and save all configurations. The system will write the settings

and reinitialize the RS-485(1) communication port.

Preliminary

5.4.1.5 REL1/REL2 (Relay Output) Settings

This page is used to configure the operating logic of REL1/REL2 (Relay

1/2).

1. Interface Control

 Enable this relay:

o ON ( ): Enables REL1/REL2 operation.

o OFF : Disables the relay.( )

2. Event Scope (Trigger Conditions)

The system provides four trigger modes:

 Exact (specify Port + Address + Command)

o Use Case: Trigger based on a specific event from a specific device.

o Configuration: Specify Port + Address + Command.

o Example: Trigger only when an INV_FAULT occurs on device

address 0 on CAN1.

 Same Port, Any Address (select Port + Command)

o Use Case: Trigger for any device on the same communication bus.

o Configuration: Specify Port + Command (address not required).

o Example: Trigger when any device on CAN1 reports INV_FAULT.

Preliminary

 Global ( )select Command

o Use Case: System-wide monitoring.

o Configuration: Specify Command only (independent of port and

device).

o Example: Trigger when any device in the system reports INV_FAULT.

 Digital Input (triggered based on DIN potiontial)

o Configuration:

 Digital In: Select the input source (e.g., DIN1).

 Trigger Logic:

 High: Relay is activated when a high signal is detected.

 Low: Relay is activated when a low signal is detected.

3. Output Logic

Defines the relay state before and after triggering:

 NO (Normally Open)

o Not triggered: Open.

o Triggered: Closed.

 NC (Normally Closed)

o Not triggered: Closed.

o Triggered: Open.

4. Save All Settings

 Click this button to apply the changes.

5.4.2 Protocol Management

On the Protocol Management page, users can perform the following

operations on existing protocol files:

 Edit

 Export

 Copy

 Delete

In addition, users can create new protocols or import existing

protocol files for centralized management.

Preliminary

5.4.2.1 Protocol Creation Process

Users can create communication protocols required by devices

through the "Create New Protocl" function.

Once created, CMU3 can use these protocols to communicate with

connected devices for monitoring purposes. The data can also be

displayed via status cards.

Step 1: Create a New Protocol

Click "Create New Protocol".

Select either a Meanwell Product Selection or a Blank

Template

o If the device is not a Mean Well product, select Blank

Template

 Meanwell Product Selection:

Based on predefined Mean Well product categories (e.g., PSU /

INV / CHG), the system automatically generates a protocol

structure with commonly used commands. This is suitable for

quickly creating standard protocol files for company products.

 Blank Template:

Creates a protocol structure without any predefined commands.

Users must define all command content manually. Suitable for

customized devices or non-standard communication protocols.

Set up Basic Information Settings. This step is used to define

the fundamental attributes of the protocol, including its name

and .communication type

Preliminary

 Protocol Name

Enter a name that clearly identifies the device or its purpose.

Including the product model or communication purpose is

recommended for easier management and identification.

Note: The name cannot contain the "/" character.

 Protocol Type

 Select the communication interface used by the protocol.

Currently supported:

 CAN (CAN bus)

 MOD (Modbus)

 PM (PMBus)

Step 2: Protocol Command Configuration

This step is used to create or select the commands included in the

protocol.

The workflow varies depending on the selected creation method.

 Quick Template Mode (Meanwell Product Selection)

The system loads a predefined command list based on the

selected product type. Users can use Product Type to quickly

locate command categories and select the required commands

(such as CHG(charger)/PSU(power supply unit), Bi-

PSU(Bidirectional power supply, INV(inverter), etc.)

This mode significantly reduces manual configuration time and is

suitable for standard products or existing models.

Preliminary

This mode is suitable for highly customized devices or non-

standard communication protocols.

Step 3: Command Property Configuration

After Select Commands, you can further adjust their properties on

the Edit Command Properties page.

 Command Name

 Affects only the UI display and does not impact the actual

communication command code.

 Blank Template Mode

No predefined commands are loaded.

Users must manually add commands and configure each field

individually, including:

 Command Name

 Command Code / RegAddress

 Byte Length

 Data Format

 Transaction Type / Function Code

 BaseUnit

 Shift(CAN)

 Bit Mapping or Data Mapping

Preliminary

 Scaling Factor

Used to convert raw communication data into actual physical values

for display and calculation.

 Notes (System Default Commands)

In , the system automatically includes Meanwell Product Selection

certain required commands.

These commands cannot be removed. Their purpose is to ensure full

compatibility with supported products.

Even if they are not directly displayed in the UI, it is recommended to

keep them.

 Priority

 A lower value indicates higher priority. Recommended guidelines:

 Real-time event commands (e.g., FAULT): priority can be set

as high as 1.

 Measurement commands (e.g., voltage, current, power):

priority can be set as low as 3.

 Other commands should be assigned higher values to reduce bus

bandwidth usage

Preliminary

Step 4: Event and Data Logging Settings

This step is used to configure data logging and event monitoring

behavior on the Configure Events page.

 Data Logging

When enabled, the system periodically reads data at a fixed

polling interval and stores it in the database.

Suitable for long-term trend analysis (e.g., voltage, current,

power).

 Event Capture

When enabled, the system monitors status changes in real time

and triggers events when conditions are met.

 Event Mode

 Log when value exceeds threshold

 Log when value falls below threshold

 Log when Bit decoding is non-zero (applicable to BitField

types)

Preliminary

Step 5: Review and Apply Protocols

After the process, the protocol will appear in the management list.

Users can view, edit, export, or copy the protocol.

In the Communication Settings page, the protocol can be

assigned to a specific port, along with configuration of baud rate,

polling interval, address binding, and logging settings.

Step 6: Edit Individual Commands

Click "Edit" Protocol Management on the Protocol Management

pafe to open the detailed configuration window for that command.

Commands Created via Meanwell Product Selection (Limited

Editing)

Only the following fields can be modified:

 Display Name

 Unit

 Priority

 DataLog / EventLog enable settings

 BitField bit definitions

Other core communication fields cannot be modified to ensure

compatibility.

Preliminary

Commands Created via Blank Template (Fully Editable)

All fields can be modified, including:

 Command Name

 Command Code

 Data format and structure

 Scaling factor or unit

 Priority and event settings

After making changes, click "Update" to save, or "Cancel" to

discard changes.

The Manage page provides system administration functions.

On this page, users can perform configuration and management of:

 User Management

 System Logs

 Application Management

 Resource Management & Monitoring

 LOG Management

 System Update

 Power Product Update

 System Image Replacement

 Audio Settings

 Background System Settings

 Custom Footer Links

5.5 Manage Page

Preliminary

5.5.1 User Management

The User Management interface allows administrators to maintain

user status and control access permissions for each application.

 Administrators can review the status of user accounts and

determine whether they can log in.

 Account Status:

Standard User: Users can log in but cannot access the

Communication Settings

Advanced User: Users can log in and access the Communication

Settings.

Disabled: Users cannot log in or use any system functions.

User accounts can also be deleted.

 Administrators can control each user's permissions for individual

apps (under development):

Access: Whether the user can use the app.

Operation: Whether the user can send commands through the

app.

 Automatic logout can be configured per user. Once the set time is

reached, the user will be logged out after their next action.

Preliminary

5.5.2 System Log

The System Log allows users to review operation records filtered by

application and time range, to track designed to specific system

activity events

User Operation Logs

This page provides a detailed record of all system operations, including

logins/logouts, parameter changes, firmware updates, and network

setting modifications. These logs cannot be modified or deleted to

ensure audit integrity.

1. Search Criteria

If there are many records, the filters at the top can help locate specific

events:

 User: Select a specific account (e.g., admin) from the dropdown to

view that user's activity history. Default is All Users.

 Application: Filter by a specific application or module (e.g., only

System-level operations).

Preliminary

 Start Time / End Time:

o Specify the desired time range for your query.

o Query All Records: Leaving both fields empty will display all

historical records in the database.

 Action Buttons:

o Search: Apply the selected filters and update the list.

o Clear Filters: Reset all filters to their default values.

2. Operation Log List

The Operation Log List is displayed in reverse chronological order (latest

entries at the top). Columns are defined as follows:

 Time: Timestamp of the event (yyyy-MM-dd HH:mm:ss).

 User: Account name of the operator.

 Application / Main Event / Sub Event:

o Hierarchical structure for easier categorization.

o Example: System (Application) > Communication Settings (Main

Event) > CAN1 (Sub Event) indicates the record is related to

changes in the CAN1 communication port.

 IP : The operator's source IP address at the time of the action, useful

for distinguishing local versus remote operations.

3. List Controls

 Records per page: Default is 25 records. Use the menu at the top-

right to adjust if you want to view more records at

once.

 Pagination: Use the navigation buttons at the bottom to switch

to desired pages.

Example Use Case

1.Troubleshooting: If a device suddenly loses connection, check the

WLAN or LAN "Communication Settings" logs to see

if anyone recently changed the IP address or Wi-Fi

password (e.g., a Mode change from AP to Wi-Fi, as

shown in the screenshot).

Preliminary

5.5.3 Application Management

This page allows users to view installed application modules and

perform actions such as , removing, or updating opeing

deployments.

5.5.3.1 Application Management Interface

This page provides an overview of all functional modules in the

system. Users can view module status, perform version updates,

install new features, or remove unused modules.

1. Global Functions

 Refresh Application List ( ):

o Click this button to reload the status of modules from the server

and the local device.

2. Module Card Information

Each functional module (e.g., INV_module) is displayed as an

individual card containing the following information

 Module Name: Displays the module identifier (e.g., INV_module,

PSU_module).

 Status:

o : Module is installed on the device. Installed

o : Module is not yet installed and must be installedNot Installed

before use.

 Version Info ( ) :

o Shows the current version installed on the device (e.g., Version 1.0).

o If the version is unknown, it usually indicates the module is not

installed or version information failed to load.

 Update Notice ( ):

o If a yellow Update Available label appears at the top-right, a newer " "

version exists on the server.

Preliminary

3. Actions

For each module, the following actions are available:

 Open:

o Click the blue open button to open the module interface.

 Remove:

o Click the [Remove] button to delete the module from the device.

4.Installation and Version Deployment

To install a specific version or update a module, use the dropdown

below the module card:

 Version Input Field:

o Defaults to the latest version (e.g., 1.0).

o To downgrade or install a specific version, select the desired

version here.

 Install:

o After confirming the version, click the [Install] button.

o The system will download and install the selected module version.

Example Use Cases

 Scenario A: Update an Existing Module

1.T INV "Update Available" label. he _module displays an

2.Select the latest version from the dropdown menu.

3.Click [Install] to perform an overwrite update.

 Scenario B: Install a New Module

1. Not InstalledLocate a module with status (e.g., PSU_module).

2.Select the desired version (or keep the default).

3. [Install] Installed openClick . Once the status changes to , click to

activate the module.

5.5.4 Resource Management & Monitoring

This page provides real-time monitoring of system resources and

service statuses, including:

 CPU usage

 Memory (RAM) usage

 Temperature Monitoring

 Disk status

 Network Mode

 Time & Timezone Settings

 System Uptime

 Version Information

Preliminary

5.5.4.1 Time & Time Zone Settings

This section allows users to configure the system time and time zone.

Users can set the time manually according to the local time or the

system's location.

5.5.4.2 System Uptime

This section shows the device's uptime

It also provides the option to restore the system to factory default

settings.

Preliminary

5.5.5 LOG Management

This page allows management of system database tables, event logs,

and DataLog settings. Users can export or clear records as needed.

 DataLog Interval: Users can set the logging interval, with a

minimum time step of 1 minute.

Preliminary

5.5.7 System Icon Replacement

Users can customize and adjust icons for both application modules

and the management interface, enhancing system personalization

and user experience.

5. .6 5 System Update

1. Place the CMU3 software file in the USB drive, as shown in the figure

below, so that the USB drive can automatically detect the file. After

scanned, click "Apply Update" to update.

2. The CMU3 software file can be prepared on a computer. After

connecting to the CMU3 page, select the file and click "Upload and

Apply" to update.

3. The CMU3 software file can also be downloaded and installed from

the MEAN WELL official server.

Preliminary

The INV_Module or inverter module is primarily designed to be used

together with Mean Well inverter products, such as the NTN-5K series. This

module can be used to remote on/off and configure the inverter's AC

output voltage and frequency, adjust charging modes, and

comprehensively monitor system operating status.

The inverter module consists of the following five core pages:

 NTN Home Page

 System Settings: including the "Charger Settings" page and the

"Inverter Settings" page

 Model Management: including the "Link Status" page and the

"Monitoring Report" page

 Shortcut Settings

Users can click the menu icon in the upper-left corner of the page

to switch to other function pages.

NOTE: After logging into the CMU3 monitoring unit, users can directly view

the INV_module on the home page. If it is not displayed, the user

may not have permission for this module, or it may need to be

downloaded or updated via the "Application Management" section

in the "Manage Page" (see Figure 1).

6. Module

6.1 INV_Module (Inverter Module)

6.1.1 NTN home page

This page is primarily used for real-time monitoring of the inverter

and displaying its operating status. It provides a high degree of

customization and allows users to configure a personalized

dashboard.

 High customization: All display elements on the page are

presented in the form of cards.

 Customizable page: Users can refer to Section 5.3 "Application

Card Management" to freely arrange and design a personalized

management interface. (See Figure 2)

Figure 1

Preliminary

Figure 2 App card editing

Figure 3: Charger Settings Page

6.1.2 System Settings: Charger Settings

This page provides complete adjustments for the charging curves

and charge timeout.

1.Charging Curve Settings

a.Constant Current (CC)

b.Tapper current (TC)

c.Constant Voltage (CV)

d.Float Voltage (FV)

2. Charging Stage Configuration

2-stage charging mode is selectable

Charge

Current

Charge

Current

Constant

Current

Constant

Current

stage 1 stage 1stage 2 stage 2Battery Full

Constant

Voltage

Constant

Voltage

Start Start

Charge

Voltage

Charge

Voltage

100%

10%

Vboost

Color of LED Color of LED

Orange OrangeGreen Green

stage 3

Float

100%

Vboost

10%

Vfloat

3-stage charging mode is selectable

Preliminary

3.Charging Timeout Settings

a.Constant Current (CC) charging timeout: 60–64,800 minutes

b.Constant Voltage (CV) charging timeout: 60–64,800 minutes

c.Float Voltage (FV) timeout: 60–64,800 minutes

1.Remote Switch : Remote ON/OFF control of the inverter.

2. AC Output Voltage and Frequency Adjustment:

a.NTN-1xx series: 100/110/115/120 Vac, 50 Hz / 60 Hz

b.NTN-2xx series: 200/220/230/240 Vac, 50 Hz / 60 Hz

3.AC Mode Charger: Enable or disable the AC charger.

4.Grid-tied feed-in: Disabled (not supported by NTN-5K series).

5.Output Priority :

Utility: When the utility power is available, the inverter operates in bypass

mode, supplying power directly from the utility to the load.

Battery: When the battery power is available, the inverter operates in

inverter mode, supplying power directly from the battery to the

load.

6.Charging Priority : Fixed to Utility

7.Battery Alarm Voltage Settings:

a.Battery Alarm: triggers a warning when battery voltage is below the

threshold.

b.Battery Shutdown: The inverter automatically shuts down for protection

when voltage drops below the safe threshold.

c.Battery Recharge: charging resumes when battery voltage recovers to

this level.

d.Battery OV Alarm: triggers a warning when battery voltage is above the

threshold.

6.1.3 System Settings: Inverter Settings

This page provides configuration options for inverter remote

control, AC output voltage and frequency, output/charging priority,

and battery alarm thresholds.

Figure 4 Inverter Settings Page

Preliminary

6.1.4 Model Management: Link Status

This page provides a visual dashboard for real-time monitoring of all

connected devices, including the total number of devices and their

operating status. Supported status indicators include error, saving,

inverter, bypass, charger, standby and shutdown.

When a specific device (for example: ADDRESS: 0) is selected, a

detailed information window will appear, displaying the following

information:

 Basic Information

 MODELNAME (e.g. NTN-5K-224)

 REVISON (e.g. 2.0,2.0,2.0)

 STATUS (e.g. Bypass)

 ERROR (e.g. blank = normally operating)

 Electrical Data

 AC VOUT (A)

 LOAD CURRENT (A)

 LOAD POWER (W)

 DC CURRENT (A)

 BATTERY VOLTAGE (V)

 Environmental and Hardware Monitoring

 TEMPERATURE (°C)

 FAN SPEED 1 (RPM)

 FAN SPEED 2 (RPM)

Figure 5 Link Status Page

Preliminary

1.LOG TYPE: Switch between viewing Event Log and Data Log.

2.Communication port(Only appear when Data log is selected):

Specify the communication port (e.g., CAN1, CAN2) to be queried.

3.DATE RANGE: Customize the start/end date and time, or use quick

filters (e.g., 0.5 Year, 1 Month, 1 Week, 1 Day).

4.ACTION : Click the Search button to retrieve data, and click Export

as needed.

5.Customize Display: Use the Show Columns to customize the data

fields displayed in the report (e.g., ID, Timestamp, Port, Device

Address, Model Name, etc.).

6.1.5 Model Management: Monitoring Report

This page provides powerful historical data query and log

management functions. The operating and filtering procedures are

as follows:

Figure 6 Monitoring Report Page

Preliminary

6.1.6 Shortcut Settings

This page allows users to customize the shortcuts in the bottom

navigation bar to optimize daily operation workflows:

Figure 7 Shortcut Page

1.Configure the page associated with each bottom navigation

button. Changes take effect immediately.

2.Customize the button icon and destination page.

No.28, Wuquan 3rd Rd., Wugu Dist., New Taipei City 248, Taiwan

MEAN WELL MWCMU3 Multi-Industry General Purpose Smart Controller

Product's Documents

Users Manual

Specifications

MEAN WELL MWCMU3 Questions and Answers

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