Contents

FR-A7NC INSTRUCTION MANUAL
This section is specifically about safety matters
SAFETY INSTRUCTIONS
CONTENTS
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 Inverter option specifications
- 1.4 CC-Link version
  - 1.4.1 CC-Link Ver. 1.10
  - 1.4.2 CC-Link Ver. 2
2 INSTALLATION
- 2.1 Pre-installation instructions
- 2.2 Installation of the communication option LED display cover
- 2.3 Installation procedure
3 WIRING
- 3.1 System configuration example
- 3.2 Connection of several inverters
- 3.3 Connection cable
- 3.4 Wiring
4 INVERTER SETTING
- 4.1 Parameter list
- 4.2 Operation mode setting
  - 4.2.1 Operation mode indication
  - 4.2.2 Operation mode switching and communication startup mode (Pr. 79, Pr. 340)
- 4.3 Operation and speed command source (Pr. 338, Pr. 339, Pr. 550)
  - 4.3.1 Communication EEPROM write selection (Pr. 342)
- 4.4 Operation at communication error occurrence
  - 4.4.1 Operation selection at communication error occurrence (Pr. 500 to Pr. 502)
  - 4.4.2 Fault and measures
- 4.5 Inverter reset
- 4.6 CC-Link function setting
  - 4.6.1 Station number setting (Pr. 542)
  - 4.6.2 Baud rate setting (Pr. 543)
  - 4.6.3 Frequency command with sign (FR-A700 series only)
5 FUNCTION OVERVIEW
- 5.1 Function block diagram
- 5.2 Output from the inverter to the network
- 5.3 Input to the inverter from the network
6 I/O SIGNAL LIST
- 6.1 CC-Link extended setting (Pr. 544)
- 6.2 I/O signal list
  - 6.2.1 I/O signal when CC-Link Ver.1 one station (FR-A5NC compatible) is occupied (Pr. 544 = 0)
  - 6.2.2 I/O signal when CC-Link Ver.1 one station is occupied (Pr. 544 = 1)
  - 6.2.3 I/O signal when CC-Link Ver.2 double setting is selected (Pr. 544 = 12)
  - 6.2.4 I/O signal when CC-Link Ver.2 quadruple setting is selected (Pr. 544 = 14)
  - 6.2.5 I/O signal when CC-Link Ver.2 octuple setting is selected (Pr. 544 = 18)
  - 6.2.6 I/O signal when CC-Link Ver.1 one station is occupied (Pr. 544 = 100) (FR-A700 series NA/EC version only)
  - 6.2.7 I/O signal when CC-Link Ver.2 double setting is selected (Pr. 544 = 112) (FR-A700 series NA/EC version only)
  - 6.2.8 I/O signal when CC-Link Ver.2 quadruple setting is selected (Pr. 544 = 114) (FR-A700 series NA/EC version only)
  - 6.2.9 I/O signal when CC-Link Ver.2 octuple setting is selected (Pr. 544 = 118) (FR-A700 series NA/EC version only)
7 DETAILS OF INPUT AND OUTPUT SIGNALS
- 7.1 Details of remote input and output signals
  - 7.1.1 Output signals (master module to inverter (FR-A7NC))
  - 7.1.2 Input signals (inverter (FR-A7NC) to master module)
- 7.2 Details of remote register
  - 7.2.1 Remote register (master module to inverter (FR-A7NC))
  - 7.2.2 Remote register (inverter (FR-A7NC) to master module)
  - 7.2.3 Instruction codes
  - 7.2.4 Monitor codes
- 7.3 Torque command by CC-Link communication (FR-A700 series only)
8 PROGRAMMING EXAMPLES
- 8.1 Program example for reading the inverter status
- 8.2 Program example for setting the operation mode
- 8.3 Program example for setting the operation commands
- 8.4 Program example for monitoring the output frequency
- 8.5 Program example for parameter reading
- 8.6 Program example for parameter writing
- 8.7 Program example for setting the running frequency
- 8.8 Program example for fault record reading
- 8.9 Program example for resetting the inverter at inverter error
- 8.10 Instructions
9 HOW TO CHECK FOR ERROR USING THE LEDS
- 9.1 When one inverter is connected
- 9.2 When two or more inverters are connected
- 9.3 Communication stops during operation
REVISIONS

Mitsubishi Electric FR A7NC Instructions Manual

Mitsubishi Electric FR A7NC manual cover

Pages 110

Year 2010

Language(s)

of 110

Mitsubishi Electric FR A7NC Specification

The Mitsubishi Electric FR A7NC is a high-performance communication option card designed to enhance the functionality of Mitsubishi's FR-A700 series inverters. This card facilitates seamless integration with various industrial networks, supporting efficient data exchange and control in advanced automation systems. It is engineered to support the CC-Link communication protocol, allowing for high-speed data transfer, precise control, and synchronization across multiple devices within a network. The FR A7NC card is equipped with advanced diagnostic capabilities, enabling quick troubleshooting and minimizing downtime. It supports connection to a wide range of Mitsubishi Electric's programmable logic controllers (PLCs) and other CC-Link compatible devices, ensuring versatile application potential in complex manufacturing environments. The card's design emphasizes ease of installation and configuration, offering plug-and-play integration with existing systems. It is built to withstand the demanding conditions of industrial environments, with robust construction and reliable performance. The FR A7NC provides enhanced communication capabilities, enabling efficient operation and monitoring of inverter systems, which is critical for optimizing energy usage and improving overall system efficiency. Compatibility with Mitsubishi's comprehensive suite of software tools allows for easy setup, monitoring, and maintenance. The FR A7NC is a vital component for industries looking to leverage advanced network communication in their automation processes, ensuring flexibility, scalability, and enhanced operational control.

Mitsubishi Electric FR A7NC F.A.Q.

How do I perform a factory reset on my Mitsubishi Electric FR A7NC?

To perform a factory reset on the FR A7NC, navigate to the parameter reset function in the drive's menu system. Follow the on-screen instructions to reset all parameters to their default values. Ensure you back up any important settings before proceeding.

What is the procedure for updating the firmware on a Mitsubishi Electric FR A7NC?

To update the firmware, first download the latest firmware version from the Mitsubishi Electric website. Connect the FR A7NC to your computer using the appropriate communication cable. Use the Mitsubishi Electric software tool to upload the firmware to the drive. Follow the software instructions carefully to complete the update process.

How can I troubleshoot communication errors on the FR A7NC?

Check the communication cable connections and ensure they are secure. Verify that the communication parameters on the drive match those of the connected device. Use diagnostic tools to identify any discrepancies in data transmission. If issues persist, consult the manual for specific error codes and solutions.

What maintenance steps should I regularly perform on the FR A7NC?

Regularly inspect the drive for dust and debris accumulation. Clean the cooling fans and heatsinks to prevent overheating. Check for any loose connections or signs of wear on electrical components. Perform a visual inspection to ensure that all parts are in good condition.

How do I set up a basic speed control function on the FR A7NC?

Access the drive’s parameter settings and configure the desired frequency for speed control. Adjust the acceleration and deceleration times as needed. Use the control panel or external input device to start and stop the motor, and verify that the speed changes according to your settings.

What should I do if the FR A7NC drive does not start?

Check the power supply to ensure that the drive is receiving the correct voltage. Inspect the start/stop control wiring for any faults. Verify that all safety interlocks are satisfied. Consult the drive’s error log for any fault codes and refer to the manual for troubleshooting steps.

How can I reduce noise interference in the FR A7NC?

Ensure that all wiring is properly shielded and grounded. Separate power cables from signal cables to prevent electromagnetic interference. Use ferrite cores on cables to reduce high-frequency noise. Implement proper grounding techniques as per the manufacturer's guidelines.

How do I configure the FR A7NC for torque control?

Access the drive’s parameter menu and enable torque control mode. Set the desired torque reference value and adjust other related parameters such as torque limits and response times. Test the configuration to ensure it meets your application requirements.

What are the steps to diagnose an overheating issue in the FR A7NC?

Check the ambient temperature around the drive to ensure it is within specified limits. Inspect the cooling system, including fans and heatsinks, for blockages or failures. Ensure that the drive is not overloaded and that the current settings are within operational limits.

How can I extend the lifespan of the FR A7NC?

Regularly maintain and clean the drive components, ensuring efficient cooling. Avoid operating the drive beyond its rated capacity. Implement proper electrical protection such as surge protectors. Conduct periodic inspections and replace worn-out parts as necessary.