Mitsubishi’s FR-D700 series inverters offer robust AC motor control, varying voltage and frequency for optimal performance. This manual guides users through safe operation and maintenance procedures.
Overview of the FR-D700 Series
The Mitsubishi Electric FR-D700 series represents a significant advancement in compact inverter technology, designed for versatile applications across diverse industries. This series, encompassing models like FR-D720, FR-D740, and FR-D720S, provides precise control of AC motors by efficiently adjusting voltage and frequency.
These inverters are engineered to enhance productivity, reduce energy consumption, and improve overall system reliability. They cater to a wide range of motor capacities, from 0.1K to 7.5K, offering flexibility for various machinery and processes. The FR-D700 series prioritizes user-friendliness, featuring intuitive interfaces and straightforward programming capabilities.
Mitsubishi Electric emphasizes that proper installation adhering to all applicable codes is the responsibility of the installer, as non-compliance can lead to safety hazards and equipment damage. This series is a cornerstone for modern motor control solutions;
Key Features and Benefits
The FR-D700 series inverters boast several key features delivering substantial benefits to users. Precise motor control through variable frequency and voltage optimizes performance and extends equipment lifespan. Compact design facilitates easy integration into existing systems, saving valuable space.
Enhanced energy efficiency reduces operational costs and minimizes environmental impact. User-friendly interfaces and simplified programming streamline setup and troubleshooting. The series supports a wide range of communication protocols for seamless integration with automation systems.
Furthermore, robust safety features, including built-in protection functions, safeguard both personnel and equipment. The availability of optional units like the FR-D700-SC and safety relay units enhances functionality and safety compliance. These inverters contribute to increased productivity, reduced downtime, and improved overall system performance.
Applicable Models (FR-D720, FR-D740, FR-D720S)
This instruction manual applies to the Mitsubishi Electric FR-D700 series inverters, specifically covering the FR-D720, FR-D740, and FR-D720S models. The FR-D720 range is available from 0.1K to 7.5K-EA, offering versatility for various applications. The FR-D740 models span 0.4K to 7.5K-EA, providing increased power options.
For applications requiring a more compact solution, the FR-D720S series, ranging from 0.1K to 2.2K-EA, delivers efficient performance in a smaller footprint. Each model within the series shares core functionalities and safety features, ensuring consistent operation.

Users should always refer to the specific model number on their inverter to ensure compatibility with the instructions and parameter settings detailed within this manual. Proper model identification is crucial for correct installation, wiring, and programming.

Safety Precautions
Prioritize safety during installation, operation, and maintenance of the FR-D700 inverter; Mitsubishi Electric disclaims responsibility for code non-compliance or resulting hazards.
General Safety Information
Before commencing any work with the FR-D700 inverter, thoroughly review this instruction manual (basic) to understand handling information and crucial safety precautions. Forward this manual to the end-user responsible for operation and maintenance.
Mitsubishi Electric assumes no liability for installations failing to adhere to applicable codes – national, local, or otherwise. Ignoring these codes presents a significant risk of personal injury and/or equipment damage. Always ensure qualified personnel perform installation and wiring.
Exercise extreme caution when working with electrical components. Disconnect power before making any connections or adjustments. Never attempt to disassemble or modify the inverter beyond the instructions provided in this manual. Improper handling can lead to electric shock or malfunction. Regularly inspect all wiring and connections for damage or wear, and replace as needed.
Remember that this manual provides basic guidance; specific applications may require additional safety measures.
Warnings Regarding Installation and Wiring
Prior to installation, verify the inverter’s specifications align with your motor and power supply. Incorrect matching can cause damage or hazardous operation. Ensure the inverter is mounted securely in a suitable enclosure, preferably meeting IP54 standards for environmental protection, especially when utilizing the safety relay unit and FR-D700-SC unit.
Wiring must comply with all applicable electrical codes. Use appropriately sized conductors and ensure proper grounding to prevent electrical shock. Double-check all connections for tightness and correct polarity before applying power.
Avoid installing the inverter in locations with excessive dust, humidity, or corrosive gases. These conditions can compromise the inverter’s performance and lifespan. Maintain adequate ventilation to prevent overheating.

Never connect or disconnect wiring while the inverter is energized; Always disconnect the main power supply and wait for the DC link capacitor to discharge completely before working on the wiring.
Precautions During Operation and Maintenance
During operation, regularly monitor the inverter’s status and diagnostics for any abnormal readings or error codes. Promptly address any issues to prevent further damage or downtime. Avoid exceeding the inverter’s rated capacity, as this can lead to overheating and reduced lifespan.
For maintenance, always disconnect the main power supply and allow the DC link capacitor to fully discharge before opening the inverter enclosure. Clean the inverter’s internal components periodically with compressed air to remove dust and debris.
Do not attempt to repair the inverter yourself. Contact a qualified technician for any repairs or component replacements. Improper repairs can void the warranty and create safety hazards.
Ensure proper nutrition supports performance and recovery, especially for athletes. A well-planned diet maximizes results and prevents fatigue and injuries, aligning with the inverter’s reliable operation.

Installation Guide
Proper mounting is crucial for optimal performance; ensure the inverter is securely fastened and meets specified environmental requirements, including IP54 enclosure standards.
Mounting the Inverter
Securely mounting the Mitsubishi FR-D700 inverter is paramount for reliable operation and longevity. Select a location that adheres to the specified environmental requirements, ensuring adequate ventilation to dissipate heat effectively. The inverter should be mounted vertically on a flat, non-combustible surface, capable of withstanding its weight and potential vibrations during operation.
Maintain sufficient clearance around the inverter for easy access during maintenance and wiring. Avoid mounting in locations exposed to direct sunlight, excessive dust, humidity, or corrosive gases. When utilizing an enclosure, verify it meets the IP54 standard for protection against dust and water ingress, particularly crucial for demanding environments.
Ensure proper grounding to prevent electrical hazards and minimize noise interference. Tighten mounting screws securely to prevent loosening due to vibrations. Regularly inspect the mounting hardware for any signs of corrosion or damage, and address them promptly to maintain a stable and safe installation.

Environmental Requirements (IP54 Enclosures)
The Mitsubishi FR-D700 inverter demands specific environmental conditions for optimal performance and a prolonged lifespan. Operation within defined temperature ranges is critical; typically, 0°C to 40°C (32°F to 104°F) without derating, though this can vary by model. Humidity should be maintained between 5% and 95% non-condensing to prevent internal corrosion and electrical failures.
For environments exceeding these parameters, or those prone to dust and water exposure, utilizing an IP54-rated enclosure is essential. This ingress protection level safeguards the inverter against solid particles (dust) and splashing water from any direction. The enclosure must be adequately ventilated to prevent overheating, potentially requiring forced-air cooling in high-ambient temperature applications.
Avoid locations with strong electromagnetic interference, corrosive gases, or excessive vibration. Regularly inspect the enclosure for damage and ensure proper sealing to maintain its protective capabilities. Adhering to these environmental guidelines ensures reliable and safe operation of the FR-D700 inverter.

Wiring and Connections
Proper wiring is crucial for safe and efficient operation of the FR-D700. Detailed diagrams illustrate input/output connections, control signals, and optional safety unit installation.
Input and Output Wiring Diagrams
The FR-D700 inverter requires careful attention to input and output wiring for reliable performance and safety. These diagrams detail the connections for power supply, motor leads, and various control signals. Always ensure the power supply voltage matches the inverter’s specifications, and proper grounding is established to prevent electrical hazards.
Motor wiring should adhere to the motor nameplate information, paying close attention to phase sequence. Incorrect wiring can lead to motor malfunction or damage. Output wiring includes connections for brakes, and other external devices, each requiring specific voltage and current ratings; Refer to the detailed schematics provided in the manual for precise terminal assignments and wiring configurations.
It’s essential to use appropriately sized wiring and connectors to handle the inverter’s current capacity. Securely tighten all connections to prevent loosening due to vibration or thermal expansion. Incorrect wiring can void the warranty and create a dangerous operating condition.
Control Signal Connections
The Mitsubishi FR-D700 inverter offers versatile control signal connections for integration with various automation systems. These include digital inputs for start/stop, forward/reverse, and preset speed selection, as well as analog inputs for speed control via voltage or current signals. Proper configuration of these signals is crucial for achieving desired motor control functionality.
Relay outputs provide feedback on inverter status, such as fault conditions or running status, enabling integration with protective devices and monitoring systems. Communication ports, like RS-485, allow for advanced control and monitoring via Modbus or other industrial protocols. Careful attention to signal polarity and voltage levels is essential to avoid damage to the inverter or connected devices.
Refer to the detailed wiring diagrams in the manual for specific terminal assignments and recommended wiring practices. Ensure all connections are secure and properly insulated to prevent electrical noise and interference.
Safety Relay Unit and FR-D700-SC Unit Installation
For enhanced safety, the Mitsubishi FR-D700 series supports integration with a dedicated safety relay unit and the FR-D700-SC unit. These components are crucial for implementing safety functions like emergency stop and safe torque off, protecting personnel and equipment from potential hazards.
The safety relay unit monitors critical inverter parameters and initiates a safe shutdown sequence in case of a fault. The FR-D700-SC unit provides a SIL3-rated safety circuit, ensuring reliable operation of safety functions. Both units must be mounted closely within an enclosure meeting IP54 standards to maintain protection against dust and moisture.
Proper wiring and configuration of these units are paramount. Refer to the manual’s detailed instructions for correct terminal connections and parameter settings. Incorrect installation can compromise the effectiveness of the safety system.

Parameter Settings and Programming
The FR-D700 inverter’s functionality is customized through parameter settings. Basic configuration establishes core operation, while advanced settings unlock specialized features for precise control.
Basic Parameter Configuration
Initial setup of the FR-D700 inverter involves configuring fundamental parameters to ensure proper operation and protection. These settings define the inverter’s core behavior and are crucial for a successful start-up. Begin by setting the motor parameters, including rated voltage, frequency, and current, to match the connected motor’s specifications. Accurate motor data is essential for optimal performance and preventing damage.
Next, configure the inverter’s input and output signal settings, specifying the control method (e.g., potentiometer, digital inputs) and output functions. Define acceleration and deceleration times to control the motor’s ramp-up and ramp-down rates, preventing abrupt starts and stops. Setting appropriate overcurrent and overvoltage protection levels safeguards the inverter and motor from potential faults. Finally, confirm the correct frequency command source and ensure the inverter is configured for the appropriate power supply voltage. Thoroughly reviewing these basic parameters before operation is vital for a safe and reliable system.

Advanced Parameter Settings
Beyond basic configuration, the FR-D700 offers extensive advanced parameter settings for fine-tuning performance and adapting to specific application needs. These parameters allow for precise control over motor characteristics, protection features, and communication protocols. Explore advanced functions like autotuning, which optimizes inverter parameters for the connected motor, maximizing efficiency and responsiveness.
Customize the inverter’s protection settings with adjustable overcurrent limits, stall prevention, and thermal overload protection. Configure advanced control modes, such as vector control or V/F control, to optimize performance for different load types; Utilize the built-in PID control function for precise process control applications. Furthermore, configure communication parameters for Modbus, Ethernet, or other protocols to enable remote monitoring and control. Mastering these advanced settings unlocks the full potential of the FR-D700, enabling tailored solutions for complex industrial automation challenges.

Operation and Monitoring
The FR-D700 inverter’s status can be easily monitored, allowing for quick diagnostics and control of starting and stopping procedures for optimal performance.
Starting and Stopping the Inverter
Initiating operation with the Mitsubishi FR-D700 inverter requires careful attention to parameter settings and safety protocols. Before starting, verify all wiring connections are secure and conform to the provided diagrams. Ensure the motor is free to rotate and no obstructions are present. The inverter can be started via external terminals, the keypad, or through communication networks, depending on the configured settings.
To begin, apply power to the inverter and confirm the display indicates a ready state. Utilize the run command signal or the start button on the keypad. Monitor the inverter’s output frequency and current to ensure smooth acceleration. Stopping the inverter can be achieved through similar methods – external signals, the keypad’s stop button, or communication commands.
Different stopping methods are available, including free run (coast to stop), DC braking, and quick stop. Select the appropriate method based on the application’s requirements. Always allow the inverter to fully decelerate before disconnecting power to prevent potential damage. Regular monitoring of the inverter’s status during operation is crucial for identifying and addressing any anomalies promptly.
Monitoring Inverter Status and Diagnostics
The Mitsubishi FR-D700 inverter provides comprehensive status monitoring and diagnostic capabilities to ensure optimal performance and facilitate troubleshooting. The built-in display panel presents real-time data, including output frequency, motor current, voltage, and inverter temperature. Regularly observing these parameters allows for early detection of potential issues.
Diagnostic codes are displayed when faults occur, providing valuable insights into the nature of the problem. Refer to the manual’s troubleshooting section for a detailed explanation of each code and recommended corrective actions. The inverter also features a history log that records past events and alarms, aiding in root cause analysis.
Advanced monitoring can be achieved through communication interfaces, enabling remote access to inverter data and control. Utilizing dedicated software, users can visualize trends, analyze performance metrics, and proactively address maintenance needs. Consistent monitoring and prompt attention to diagnostic information are essential for maximizing the inverter’s lifespan and minimizing downtime.