Contents

FR-A7AZ INSTRUCTION MANUAL
This section is specifically about safety matters
SAFETY INSTRUCTIONS
1 PRE-OPERATION INSTRUCTIONS
- 1.1 Inverter model
- 1.2 Unpacking and product confirmation
  - 1.2.1 Product confirmation
  - 1.2.2 Parts
- 1.3 Compatible inverters
2 INSTALLATION AND WIRING
- 2.1 Pre-installation instructions
- 2.2 Installation procedure
- 2.3 Wiring
3 PARAMETER LIST
4 BIPOLAR ANALOG OUTPUT
- 4.1 Connection diagram
- 4.2 Terminals
- 4.3 Bipolar analog outputting parameter
  - 4.3.1 Parameter list
  - 4.3.2 Calibration of the indicator (Pr. 838, Pr. 857, C0)
  - 4.3.3 Monitor item list
  - 4.3.4 Terminal DA1 response level adjustment (Pr. 839)
5 HIGH RESOLUTION ANALOG INPUT
- 5.1 Connection diagram
- 5.2 Terminals
- 5.3 High resolution analog input parameter
  - 5.3.1 Parameter list
  - 5.3.2 Selection of terminal 6 function (Pr. 406)
  - 5.3.3 Calibration of terminal 6 (Pr. 148, Pr. 149, Pr. 846 to Pr. 848, C30 to C37)
- 5.4 Noise reduction techniques
- 5.5 Specifications
6 MOTOR THERMISTOR INTERFACE
- 6.1 Connection diagram
- 6.2 Terminals
- 6.3 Motor thermistor parameter
  - 6.3.1 Parameter list
  - 6.3.2 Thermistor setting
  - 6.3.3 Activating the motor thermistor
  - 6.3.4 Thermistor calibration (C29)
  - 6.3.5 Motor temperature detection signal
  - 6.3.6 Motor temperature monitor output
REVISIONS

Mitsubishi Electric FR A7AZ Instructions Manual

Mitsubishi Electric FR A7AZ manual cover

Pages 46

Year 2011

Language(s)

of 46

Mitsubishi Electric FR A7AZ Specification

The Mitsubishi Electric FR-A7AZ is an advanced power regenerative unit designed to enhance energy efficiency in industrial applications. This unit is engineered to work seamlessly with Mitsubishi's FR-A700 series inverters, providing a robust solution for energy regeneration. It significantly reduces energy costs by converting excess energy generated during motor braking back into usable power, which can then be fed back into the power supply system.

The FR-A7AZ is compact and integrates easily into existing systems, offering a straightforward installation process. It is equipped with a high-performance IGBT (Insulated Gate Bipolar Transistor) module that ensures efficient power conversion and superior thermal management, thereby enhancing the longevity and reliability of the unit. The device supports a wide range of input voltages, making it versatile for various industrial environments.

This regenerative unit includes advanced control features, such as real-time monitoring and diagnostic capabilities, which facilitate maintenance and troubleshooting. It supports various communication protocols, ensuring compatibility with multiple industrial networks, which simplifies integration into complex automation systems.

Safety and reliability are paramount with the FR-A7AZ, which incorporates comprehensive protective functions including overcurrent, overvoltage, and thermal protection. These features safeguard both the unit and the connected systems from potential damage, minimizing downtime and maintenance costs. The Mitsubishi Electric FR-A7AZ is a state-of-the-art power regenerative unit that offers a sustainable and efficient solution for energy management in demanding industrial applications.

Mitsubishi Electric FR A7AZ F.A.Q.

What are the first steps to set up the Mitsubishi Electric FR A7AZ?

Begin by ensuring that the drive is properly mounted and wired according to the installation manual. Next, connect the power supply and configure the initial parameters using the built-in keypad or a compatible programming tool.

How can I troubleshoot a communication error on the FR A7AZ?

Check all cable connections for secure attachment and verify that the communication settings match between the drive and the controller. Ensure that the correct protocol is selected and the baud rate is properly configured.

What maintenance practices are recommended for the FR A7AZ?

Regularly inspect and clean the cooling fans and heatsinks to prevent overheating. Check for loose connections and ensure that the environmental conditions meet the drive's specifications. Perform a parameter backup periodically.

How do I reset the FR A7AZ to factory settings?

To reset the drive to factory settings, access the parameter settings through the keypad, navigate to the reset parameter option, and confirm the action. Consult the manual for specific parameter numbers.

What should I do if the FR A7AZ does not start the motor?

Verify that the drive is receiving power and that all relevant input signals, such as start commands, are present. Check for any active fault codes and resolve them according to the manual.

How can I increase energy efficiency using the FR A7AZ?

Utilize the drive's energy-saving functions, such as automatic energy optimization modes, and adjust the motor speed to match the load requirements. Also, consider using regenerative braking if applicable.

What are common causes of overheating in the FR A7AZ?

Overheating can be caused by blocked air vents, malfunctioning cooling fans, or excessive ambient temperatures. Ensure that the drive is not overloaded and that it operates within the specified temperature range.

How can I perform a software update on the FR A7AZ?

Check the manufacturer's website for the latest firmware version. Use the recommended software tool to connect to the drive and follow the software update procedure provided in the update documentation.

What are the safety precautions when handling the FR A7AZ?

Always disconnect the power supply before performing maintenance. Use appropriate personal protective equipment, and ensure that only trained personnel operate or service the drive. Follow all safety guidelines in the manual.

How can I extend the lifespan of the FR A7AZ?

Maintain a clean environment around the drive to prevent dust accumulation. Regularly check for signs of wear or damage, and replace components as needed. Ensure proper ventilation and avoid excessive vibration.