Contents

MD-CX520 INSTRUCTION MANUAL
Please read here first
Safety Instructions
CONTENTS
1. PRE-OPERATION INFORMATION
- 1.1 Checking the Product
  - 1.1.1 Contents
  - 1.1.2 Model
  - 1.1.3 Drive units to be used with motors
- 1.2 Parts Identification
- 1.3 Handling of Covers and Operation Panel
  - 1.3.1 Removal and reinstallation of the front cover
  - 1.3.2 Removal and reinstallation of the wiring cover
  - 1.3.3 Removal and reinstallation of the operation panel
- 1.4 Transportation
- 1.5 Storage
2. INSTALLATION
- 2.1 Checking the Installation Environment
  - 2.1.1 Operating environment
  - 2.1.2 Installation in enclosure
- 2.2 Preparation of Peripheral Devices
  - 2.2.1 Basic configuration
  - 2.2.2 Selection of peripheral devices
- 2.3 Installation Method
3. WIRING
- 3.1 Pre-Wiring Instructions
  - 3.1.1 Terminal connection diagram
  - 3.1.2 Electromagnetic noise
- 3.2 Wiring of the Main Circuit Terminals
  - 3.2.1 Terminals
  - 3.2.2 Terminal layout and connection specifications
  - 3.2.3 Wiring of the AC power input terminals R, S, T
  - 3.2.4 Wiring of the motor connection terminals U, V, W
  - 3.2.5 Wiring of the earth (ground) terminals
  - 3.2.6 Wiring of the DC reactor connection terminals P/+, P1
  - 3.2.7 Wiring of the brake resistor connection terminals P/+, PR
  - 3.2.8 Wiring of the DC terminals P/+, N/-
- 3.3 Wiring of the Control Circuit Terminals
  - 3.3.1 Terminals
  - 3.3.2 Terminal layout and connection specifications
  - 3.3.3 Wiring of the contact input terminals
  - 3.3.4 Wiring of the speed command input terminals
  - 3.3.5 Wiring of the transistor output terminals
  - 3.3.6 Wiring of the contact output terminals
  - 3.3.7 Wiring of the instrument connection terminals
- 3.4 Wiring of the PU Connector
  - 3.4.1 Pin layout
  - 3.4.2 Using the cable to connect the operation panel
  - 3.4.3 System configuration examples for communication operation
  - 3.4.4 Wiring methods for communication operation
4. HANDLING OF OPERATION PANEL
- 4.1 Parts Identification and Function
- 4.2 Operation Detail
- 4.3 Operation Method
- 4.4 Restrictions with FR-PU04
5. OPERATION
- 5.1 Power On
- 5.2 Parameter Setting
  - 5.2.1 Selecting the operation mode parameters
  - 5.2.2 Checking the basic parameters
- 5.3 Operation Example
  - 5.3.1 PU operation mode
  - 5.3.2 External operation mode
  - 5.3.3 External/PU combined operation mode 1
  - 5.3.3 External/PU combined operation mode 1
  - 5.3.5 Operation at start
6. TROUBLESHOOTING
- 6.1 Message Displayed on the Operation Panel
  - 6.1.1 Protective function activated
  - 6.1.2 Alarm function activated
  - 6.1.3 Others
  - 6.1.4 Correspondences between digital and actual characters
- 6.2 Abnormal Motor Operation
- 6.3 Malfunction Due to Electromagnetic Noise and the Corresponding Countermeasures
- 6.4 Maintenance and Inspection
  - 6.4.1 Inspection
  - 6.4.2 Wear parts
  - 6.4.3 Cooling fan replacement method
  - 6.4.4 Power measurement at circuits
7. SPECIFICATIONS
- 7.1 Drive Unit Specifications
  - 7.1.1 Standard specifications
  - 7.1.2 Outline drawings
  - 7.1.3 Option list
- 7.2. Motor Specifications
  - 7.2.1 Standard specifications
8. PARAMETER FUNCTIONS
- 8.1 Protection and Editing of the Parameters
- 8.2 Selection of Operation Mode
- 8.3 Selection of the Speed Command
  - 8.3.1 Selection of the analog speed command specifications
  - 8.3.2 Variable-speed operation using contact input signals
- 8.4 Selection of the Control Circuit Contact Input Terminal Functions
- 8.5 Setting of the Operation Pattern
  - 8.5.1 Running speed region
  - 8.5.2 Acceleration time and deceleration time
  - 8.5.3 Stop operation
  - 8.5.4 Selection of regenerative brake unit
  - 8.5.5 Stall prevention operation level
  - 8.5.6 Motor sound selection
  - 8.5.7 Other settings
- 8.6 Communication operation from the PU connector
- 8.7 Monitoring of Operation Status
  - 8.7.1 Selection of operation panel display data
  - 8.7.2 Selection of the control circuit output terminal functions
  - 8.7.3 Detection of running speed
  - 8.7.4 Detection of output current
  - 8.7.5 Selection of the instrument connection terminal functions
- 8.8 Control Parameters
APPENDIX
- APPENDIX 1 Parameter List (Numerical Order)
REVISIONS

Mitsubishi Electric MD CX520 Instruction Manual

Mitsubishi Electric MD CX520 manual cover

Pages 156

Year 2011

Language(s)

of 156

Mitsubishi Electric MD CX520 Specification

The Mitsubishi Electric MD CX520 is a high-performance air conditioning unit designed for both residential and commercial applications, offering advanced climate control and energy efficiency. This model incorporates state-of-the-art inverter technology, which allows for precise temperature regulation and reduced energy consumption, making it an environmentally friendly option. The MD CX520 features a powerful cooling capacity, capable of maintaining comfortable indoor environments even in extreme weather conditions. It uses R32 refrigerant, which has a lower global warming potential compared to traditional refrigerants, aligning with modern sustainability standards.

The unit is equipped with a sophisticated air filtration system that ensures clean and healthy air circulation by effectively removing dust, allergens, and other airborne particles. This contributes to improved indoor air quality, promoting a healthier living or working environment. The MD CX520 also boasts a sleek and compact design, facilitating easy installation in various settings without compromising on aesthetic appeal.

For user convenience, the MD CX520 includes an intuitive control interface, allowing for easy operation and customization of settings. It supports smart connectivity features, enabling remote operation through compatible devices and integration with home automation systems. This flexibility offers users enhanced control over their air conditioning system, ensuring optimal comfort at all times.

Reliability and durability are key attributes of the Mitsubishi Electric MD CX520, as it is constructed with high-quality materials and components that ensure long-lasting performance. The unit is designed to operate quietly, minimizing noise disruption while maintaining high efficiency. Overall, the MD CX520 represents a robust and versatile solution for modern air conditioning needs, combining innovative technology with user-friendly features and a commitment to environmental responsibility.

Mitsubishi Electric MD CX520 F.A.Q.

How do I properly install the Mitsubishi Electric MD CX520?

Ensure the unit is installed on a stable surface with adequate ventilation. Follow the installation guide provided in the manual, connecting all electrical and data cables as specified.

What should I do if the MD CX520 is not turning on?

Check the power supply and ensure the unit is plugged in correctly. Verify that the circuit breaker is not tripped and inspect all connections for any visible damage.

How can I maintain optimal performance of the MD CX520?

Regularly clean the air filters and ensure that the unit is free from dust and debris. Schedule routine maintenance checks and follow the maintenance guidelines in the user manual.

What are the common troubleshooting steps for connectivity issues?

Verify network settings and ensure all cables are securely connected. Restart the unit and the network router. Consult the network setup section of the manual for further guidance.

How do I update the firmware on the MD CX520?

Download the latest firmware from the Mitsubishi Electric website. Follow the update instructions provided in the manual, ensuring the device is connected to a stable power source during the process.

What should I do if the unit is overheating?

Check for obstructions around the ventilation areas and ensure the environment is within the recommended temperature range. Clean the filters and reduce the workload if necessary.

How can I reset the MD CX520 to factory settings?

Access the system settings menu and select the factory reset option. Confirm the action and wait for the unit to restart to complete the reset process.

How often should the filters be cleaned or replaced?

Filters should be inspected and cleaned every three months and replaced annually or as needed, depending on the operating environment.

What preventive maintenance can be performed to extend the unit's lifespan?

Regularly inspect electrical connections, clean filters, and ensure proper ventilation. Schedule professional maintenance checks annually.

How can I contact customer support for further assistance?

Visit the Mitsubishi Electric website for contact details or refer to the customer support section in the user manual for phone and email contact options.