Contents

Introduction
Features
Table of Contents
1. Safety Precautions
- 1.1 Precautions for Operating Environment and Conditions
- 1.2 Precautions for Preparation before Use
- 1.3 Precautions for Installation and Wiring
- 1.4 Precautions for Use
- 1.5 Precautions for Maintenance
- 1.6 Precautions for Storage
- 1.7 Precautions for Disposal
- 1.8 Packaging Materials and Users Manual
2. Notifications
3. System Configuration
- 3.1 Precautions for System Configuration
- 3.2 Basic Configuration
- 3.3 Configuration with Combination of Multiple Control Units (1 System)
- 3.4 Configuration with Combination of Multiple Control Units (2 Systems or more)
- 3.5 Connection with Superior Monitoring Systems via MODBUS RTU Communication
- 3.6 Connection with Superior Monitoring Systems via other than MODBUS RTU Communication
4. Control Unit
- 4.1 Name and Function of Each Part
  - 4.1.1 Name of Each Part
  - 4.1.2 LED Indicator and Function
- 4.2 How to Install/Detach the Control Unit
  - 4.2.1 Installing on IEC Rail
  - 4.2.2 Installing on JIS Type Attachment Plate
- 4.3 How to Wire the Control Unit
  - 4.3.1 Precautions for Wiring
  - 4.3.2 Wiring for Interlocking Control
  - 4.3.3 Wiring for Compressor Control
  - 4.3.4 Wiring for Schedule Control
  - 4.3.5 Connecting with Control Unit Engineering Tool
  - 4.3.6 Connecting/Replacing the Lithium Battery
5. Control Unit Engineering Tool
- 5.1 Operating Environment and Installation
  - 5.1.1 Download File Composition
  - 5.1.2 Recommended System Environment
  - 5.1.3 Installing Control Unit Engineering Tool
  - 5.1.4 Uninstalling Control Unit Engineering Tool
- 5.2 Precautions for Operation
- 5.3 Basic Operation
  - 5.3.1 Starting Control Unit Engineering Tool
  - 5.3.2 Ending Control Unit Engineering Tool
  - 5.3.3 Changing the Display Language
  - 5.3.4 Displaying the Version information
- 5.4 Screen Transition
- 5.5 Project Management
  - 5.5.1 Creating the Project
  - 5.5.2 Opening the Project
6. Procedure for Setup/Operation
- 6.1 First Setup
- 6.2 Basic Operation
  - 6.2.1 Checking the Control Status
  - 6.2.2 Manually Operating the Contact Output/Analog Output
  - 6.2.3 Changing the Control Setting
  - 6.2.4 Changing the Control Type
  - 6.2.5 Changing the IP Address
  - 6.2.6 Setting the Clock
  - 6.2.7 Acquiring the Event Log (The Latest 10 Logs)
  - 6.2.8 Acquiring the Event Log (All Logs)
  - 6.2.9 Updating the Firmware
  - 6.2.10 Changing the Control Setting with Updating the Firmware
- 6.3 Operation for Replacing/Removing the Control Unit
  - 6.3.1 Replacing the Control Unit due to its Failure
  - 6.3.2 Removing the Control Unit
7. Setting Operation
- 7.1 System Management
  - 7.1.1 Registering/Changing the System Information
  - 7.1.2 Deleting the System
- 7.2 Setting Menu
- 7.3 Verification of Settings
- 7.4 Read of Settings
- 7.5 Setting of Terminals
  - 7.5.1 Adding the Child Terminal of Control Unit
  - 7.5.2 Deleting the Child Terminal of Control Unit
  - 7.5.3 Registering/Changing Information on the Control Unit
- 7.6 Setting of Control Method
- 7.7 Interlocking Control
  - 7.7.1 Registering/Changing the Interlocking Control Setting (Contact Output)
  - 7.7.2 Registering/Changing the Interlocking Control Setting (Analog Output)
  - 7.7.3 Deleting the Interlocking Control Setting
- 7.8 Compressor Control
  - 7.8.1 Registering the Compressor Setting
  - 7.8.2 Registering/Changing the Day Pattern
  - 7.8.3 Deleting the Day Pattern
  - 7.8.4 Registering/Changing/Deleting the Calendar
- 7.9 Schedule Control
  - 7.9.1 Registering/Changing the Day Pattern
  - 7.9.2 Deleting the Day Pattern
  - 7.9.3 Registering/Changing/Deleting the Calendar
- 7.10 Write of Network Information
  - 7.10.1 Writing Network Information
  - 7.10.2 Reading Network Information
- 7.11 Check of Connection
- 7.12 Write of Settings
- 7.13 Change of RUN/STOP
8. Measurement Value Monitoring
9. Control Monitoring
- 9.1 Control Status Monitoring
- 9.2 Manual Control of output
10. Maintenance Menu (with Control Unit Engineering Tool)
- 10.1 Output of Event Log
  - 10.1.1 File Name and Format of Event Log
  - 10.1.2 Details on Log Contents
- 10.2 Setting of Clock
- 10.3 Change of Password
- 10.4 Setting of Logging Unit
- 10.5 Check of IP Address
- 10.6 Check of F/W Version
- 10.7 Update of F/W
11. Reference
- 11.1 Troubleshooting
- 11.2 After Sales Service
- 11.3 Q&A
12. Requirements for Compliance with EMC Directive
13. Specifications
- 13.1 Specifications of the Control Unit
- 13.2 Specifications of MODBUS Communication
- 13.3 Specifications of Ethernet Communication
- 13.4 Specifications of Control Unit Engineering Tool
- 13.5 Version History of Control Unit Engineering Tool
- 13.6 Specifications of Lithium Battery
14. Optional Products (sold separately)
- 14.1 List of Optional Products
- 14.2 External Dimensions of Optional Products
15. External Dimensions of the Control Unit
16. The Software End User License Agreement

Mitsubishi EMU4-KNET User's Manual

Mitsubishi EMU4-KNET Measuring Unit manual cover

Pages 136

Year 2021

Language(s)

of 136

Mitsubishi EMU4-KNET Measuring Unit Specification

The Mitsubishi EMU4-KNET Measuring Unit is a sophisticated energy monitoring device designed for precise measurement and analysis of electrical parameters in industrial and commercial environments. It supports a broad range of applications by enabling accurate monitoring of power consumption and energy efficiency. The unit is compatible with multiple voltage and current inputs, catering to a variety of system configurations. It offers a high level of accuracy in measuring parameters such as voltage, current, power factor, frequency, active and reactive power, and energy consumption.

The EMU4-KNET features an advanced communication interface, allowing seamless integration with building management systems and other industrial networks. It supports protocols such as Modbus RTU, ensuring interoperability with existing infrastructure. The unit is equipped with a user-friendly display and interface, facilitating easy configuration and real-time data visualization. It offers robust data logging capabilities, enabling historical data analysis and trend monitoring to optimize energy usage and reduce operational costs.

The device is engineered for reliability and durability, with a compact design that simplifies installation in various electrical panels and environments. Its modular architecture allows for scalable deployment, accommodating the evolving needs of facilities. With comprehensive diagnostic and alarm functions, the EMU4-KNET ensures proactive management of electrical systems, enhancing operational safety and efficiency. This measuring unit is an essential component for organizations aiming to achieve energy sustainability and operational excellence through effective energy management strategies.

Mitsubishi EMU4-KNET Measuring Unit F.A.Q.

How do I perform a factory reset on the Mitsubishi EMU4-KNET Measuring Unit?

To perform a factory reset on the EMU4-KNET Measuring Unit, navigate to the system settings menu, select 'Reset to Factory Settings', and confirm the action. Ensure to backup important data beforehand.

What should I do if the EMU4-KNET unit is not displaying any readings?

Check the power supply and connections to ensure the unit is properly powered. Verify that the sensors are connected correctly and functioning. Restart the unit if necessary.

How can I update the firmware on the Mitsubishi EMU4-KNET?

Download the latest firmware from the Mitsubishi website. Connect the unit to a computer via USB, and use the provided software tool to transfer and install the firmware. Follow the on-screen instructions to complete the update.

What is the recommended maintenance schedule for the EMU4-KNET Measuring Unit?

Regular maintenance should include monthly visual inspections, quarterly calibration checks, and annual comprehensive inspections. Refer to the user manual for detailed procedures and intervals.

Can the EMU4-KNET Measuring Unit be integrated with other monitoring systems?

Yes, the EMU4-KNET can be integrated with various monitoring systems using its communication ports and protocols such as Modbus and Ethernet. Consult the integration guide for detailed instructions.

How do I troubleshoot communication errors on the EMU4-KNET?

Check the network cables and connections for any physical damage. Verify the network settings in the unit's menu, ensuring they match the configurations required by your network. Restart the device and network equipment if needed.

What steps should I take if the unit shows inaccurate measurements?

Ensure the sensors are calibrated and properly installed. Check for any environmental factors that might affect accuracy, such as electromagnetic interference. Perform a self-diagnosis test through the unit's diagnostic menu.

How can I export data from the EMU4-KNET Measuring Unit?

Data can be exported via the USB port or over the network using the data export feature in the settings menu. Choose the desired format and destination, then follow the prompts to complete the export process.

What precautions should I take when installing the EMU4-KNET Measuring Unit?

Ensure that the unit is installed in a location free from excessive dust, moisture, and vibration. Proper grounding and electrical connections are essential to prevent damage and ensure accurate readings.

How do I calibrate the sensors connected to the EMU4-KNET?

Access the calibration menu on the unit, select the sensor to be calibrated, and follow the on-screen instructions. Use certified calibration equipment for accurate results. Refer to the user manual for specific calibration procedures.