Contents

FR-A8AX INSTRUCTION MANUAL
Safety instructions
CONTENTS
1 PRE-OPERATION INSTRUCTIONS
- 1.1 Unpacking and checking the product
  - 1.1.1 Product confirmation
- 1.2 Component names
- 1.3 Specifications
2 INSTALLATION
- 2.1 Pre-installation instructions
- 2.2 Installation procedure
- 2.3 Wiring
3 CONNECTION DIAGRAM AND TERMINAL
- 3.1 Connection diagram
- 3.2 Terminals
- 3.3 Code input example
4 PARAMETER
- 4.1 Parameter list
- 4.2 Setting the parameter
  - 4.2.1 Selection of input method (Pr.304)
  - 4.2.2 Read timing operation selection (Pr.305)
  - 4.2.3 Bias and gain adjustment (Pr.300 to Pr.303)
  - 4.2.4 Digital input unit selection (Pr.329)
  - 4.2.5 16-bit digital torque command (FR-A800 series only)
- 4.3 Precautions
REVISIONS

Mitsubishi Electric FR A8AX Instructions Manual

Mitsubishi Electric FR A8AX manual cover

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Mitsubishi Electric FR A8AX Specification

The Mitsubishi Electric FR A8AX is an advanced option card designed to enhance the functionality of the FR-A800 series inverters. This technical accessory is engineered to provide precise control and additional input/output capabilities, essential for complex industrial automation tasks. It features high-speed processing capabilities, allowing for improved system performance and responsiveness in demanding applications. The FR A8AX supports various communication protocols, ensuring seamless integration into existing automation systems and compatibility with a wide range of industrial equipment.

The card is equipped with multiple analog and digital input/output channels, facilitating versatile connectivity options for sensors and actuators. This enables users to implement sophisticated control strategies, from simple motor control to intricate process automation. The FR A8AX is designed with robust protection features to ensure reliable operation even in harsh industrial environments. It includes safeguards against overvoltage, undervoltage, and short circuits, enhancing system stability and reducing downtime.

Installation of the FR A8AX is straightforward, thanks to its modular design, which allows for easy integration into existing setups without extensive reconfiguration. The card is supported by Mitsubishi Electric’s comprehensive software suite, enabling users to program and monitor the system with user-friendly interfaces and advanced diagnostic tools. The FR A8AX option card significantly extends the functionality of the FR-A800 series inverters, making it an ideal choice for industries seeking enhanced control, flexibility, and reliability in their automation systems.

Mitsubishi Electric FR A8AX F.A.Q.

How do I reset the Mitsubishi Electric FR A8AX to factory settings?

To reset the FR A8AX to factory settings, navigate to the parameter settings and set the 'initialization' parameter to '1'. This will revert all settings back to their defaults. Always ensure that you have a backup of your configurations before performing a reset.

What is the procedure to troubleshoot communication errors on the FR A8AX?

First, check all physical connections and ensure cables are secure. Next, verify that communication parameters match between devices. Use the diagnostic tools provided in the FR A8AX to identify and resolve any communication mismatches.

How can I update the firmware of the FR A8AX inverter?

To update the firmware, download the latest firmware version from the Mitsubishi Electric website. Connect your device to a PC via the USB interface, and use the provided software tool to upload the new firmware to the inverter. Follow the on-screen instructions carefully.

What preventive maintenance is recommended for the FR A8AX?

Regularly check for dust accumulation and clean the unit to prevent overheating. Inspect electrical connections for signs of wear or corrosion. Verify that the cooling fans are operational and replace them if necessary. Conduct these checks every six months.

How do I program custom parameters on the FR A8AX?

Access the programming menu via the keypad or software interface. Navigate to the 'Custom Parameters' section. Use the manual to identify the parameters you wish to alter and enter the new values. Save your changes to implement them.

What steps should I take if the FR A8AX displays an overvoltage error?

First, check the input voltage and ensure it is within specifications. Inspect the deceleration time settings; a longer deceleration time may help. If the issue persists, consider installing a braking resistor to manage excess energy.

Can I use the FR A8AX with a single-phase power supply?

The FR A8AX is primarily designed for three-phase power supplies. Consult the manual or a Mitsubishi Electric specialist to determine if your model can be configured for single-phase operation, as this may vary by model and application.

How do I interpret the LED status indicators on the FR A8AX?

Refer to the user manual for a detailed explanation of LED indicators. Generally, a steady green light indicates normal operation, while a flashing red light may signal a fault. Utilize the error code to diagnose specific issues.

What is the recommended procedure for dealing with overheating issues on the FR A8AX?

Ensure that the ambient temperature does not exceed specified limits. Check the ventilation and clear any obstructions. Confirm that the cooling fans are functional. If overheating persists, reduce the load or duty cycle to mitigate the issue.

How can I connect the FR A8AX to a PLC system for automation?

Utilize the communication ports on the FR A8AX to interface with your PLC. Set the correct communication protocol and parameters as specified in both the inverter and PLC manuals. Ensure all wiring is done according to the schematic diagrams provided.