Contents

FR-A7NL 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 SERIAL number check
  - 1.2.2 Product confirmation
- 1.3 Parts
- 1.4 Operation status indication LED
- 1.5 Specifications
  - 1.5.1 Inverter option specifications
  - 1.5.2 Communication specifications
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 Wiring
4 INVERTER SETTING
- 4.1 Parameter list
- 4.2 Operation mode setting
  - 4.2.1 Operation mode indicators
  - 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 Frequency and speed settings
5 FUNCTION OVERVIEW
- 5.1 XIF file
- 5.2 Output from the inverter to the network
- 5.3 Input from the network to the inverter
6 NETWORK VARIABLES
- 6.1 Object map
- 6.2 Network variable list
- 6.3 LONWORKS object
  - 6.3.1 Setting range of object ID
  - 6.3.2 Object request (network input SNVT_obj_request nviRequest)
  - 6.3.3 Object status (network output SNVT_obj_status nvoStatus)
- 6.4 Variable speed motor drive object
  - 6.4.1 Start/stop and simple speed setting (network input SNVT_switch nviDrvSpeedStpt)
  - 6.4.2 Speed adjustment (0.005% increments) (network input SNVT_lev_percent nviDrvSpeedScale)
  - 6.4.3 Speed monitor (0.005% increments) (network output SNVT_lev_percent nvoDrvSpeed)
- 6.5 Inverter basic functions
  - 6.5.1 Inverter input signal (network input SNVT_state nviInvInputSig)
  - 6.5.2 Inverter output signal (network output SNVT_state nvoInvOutputSig)
  - 6.5.3 Set frequency write destination selection (network input SNVT_switch nviInvSetFreqSw)
  - 6.5.4 Set frequency (0.1Hz increments) (network input SNVT_freq_hz nviInvSetFreq)
  - 6.5.5 Set frequency (0.005% increments) (network input SNVT_lev_percent nviInvSetFreqP)
  - 6.5.6 Output frequency monitor (0.1Hz increments) (network output SNVT_freq_hz nvoInvOutFreq)
  - 6.5.7 Output frequency monitor (0.005% increments) (network output SNVT_lev_percent nvoInvOutFreqP)
  - 6.5.8 Output current monitor (0.1A increments) (network output SNVT_amp nvoDrvCurnt)
  - 6.5.9 Output voltage monitor (0.1V increments) (network output SNVT_volt nvoDrvVolt)
  - 6.5.10 Actual operation time monitor (1h increments) (network output SNVT_time_hour nvoDrvRunHours)
  - 6.5.11 Cumulative power monitor (1kWh increments) (network output SNVT_elec_kwh nvoDrvRunPower)
  - 6.5.12 Cumulative power monitor 2 (0.1kWh increments) (network output SNVT_elec_kwh_l nvoDrvRunPower_l)
  - 6.5.13 Fault reset (network input SNVT_switch nviInvAlarmReset)
  - 6.5.14 Fault occurrence definition (network output SNVT_str_asc nvoInvAlarmStr)
  - 6.5.15 Product information (maker name, type) (network output SNVT_str_asc nvoInvTypeInfo)
  - 6.5.16 Emergency stop command (network input SNVT_hvac_emerg nviEmergOverride)
  - 6.5.17 Emergency stop status (network output SNVT_hvac_emerg nvoEmergStatus)
  - 6.5.18 Fault status (network output SNVT_switch nvoDrvAlarm)
- 6.6 Inverter PID control functions
  - 6.6.1 PID set point (network input SNVT_lev_percent nviInvPIDTarget)
  - 6.6.2 PID measured value (network input SNVT_lev_percent nviInvPIDValue)
  - 6.6.3 PID deviation (network input SNVT_lev_percent nviInvPIDDev)
- 6.7 Inverter extended functions
  - 6.7.1 Monitor code (network input SNVT_count nviInvMonCode)
  - 6.7.2 Monitor data (network output SNVT_count nvoInvMonData)
  - 6.7.3 Set frequency (0.01Hz increments) (network input SNVT_count nviInvSetFreq2)
  - 6.7.4 Output frequency monitor (0.01Hz increments) (network output SNVT_count nvoInvOutFreq2)
  - 6.7.5 Command request (network input SNVT_str_asc nviInvCmdReq)
  - 6.7.6 Command request (binary) (network input SNVT_preset nviInvCmdBinReq)
  - 6.7.7 Command reply (network output SNVT_str_asc nvoInvCmdReply)
  - 6.7.8 Command reply (binary) (network output SNVT_preset nvoInvCmdBinRply)
- 6.8 Configuration properties
  - 6.8.1 Initial communication delay time (network input config SNVT_time_sec nciPwUpOutTm)
  - 6.8.2 Forward/reverse rotation prevention (network input config SNVT_count nciInvFwdRevLock)
  - 6.8.3 % set reference frequency (network input config SNVT_freq_hz nciInvSetFreqBas)
  - 6.8.4 Maximum frequency (0.1Hz increments) (network input config SNVT_freq_hz nciInvMaxFreq)
  - 6.8.5 Minimum frequency (0.1Hz increments) (network input config SNVT_freq_hz nciInvMinFreq)
  - 6.8.6 Heartbeat send time interval (network input config SNVT_time_sec nciSndHrtBt)
  - 6.8.7 Minimum heartbeat send time (network input config SNVT_time_sec nciMinOutTm)
  - 6.8.8 Acceleration time (network input config SNVT_time_sec nciRampUpTm)
  - 6.8.9 Deceleration time (network input config SNVT_time_sec nciRampDownTm)
  - 6.8.10 PID action selection (network input config SNVT_count nciInvPIDSwitch)
  - 6.8.11 PID proportional band (network input config SNVT_count nciInvPIDPro)
  - 6.8.12 PID integral time (network input config SNVT_time_sec nciInvPIDIntTm)
  - 6.8.13 PID differential time (network input config SNVT_time_sec nciInvPIDDiffTm)
  - 6.8.14 PID manipulated variable bias (0.1Hz increments) (network input config SNVT_freq_hz nciInvPIDOpeBias)
  - 6.8.15 PID manipulated variable gain (0.1Hz increments) (network input config SNVT_freq_hz nciInvPIDOpeGain)
  - 6.8.16 Heartbeat receive time interval (network input config SNVT_time_sec nciRcvHrtBt)
  - 6.8.17 Maximum speed (0.005% increments) (network input config SNVT_lev_percent nciMaxSpeed)
  - 6.8.18 Minimum speed (0.005% increments) (network input config SNVT_lev_percent nciMinSpeed)
  - 6.8.19 Reference speed setting (network input config SNVT_rpm nciNmlSpeed)
  - 6.8.20 Reference frequency setting (network input config SNVT_freq_hz nciNmlFreq)
  - 6.8.21 Speed adjustment default value (network input config SNVT_lev_percent nciDrvSpeedScale)
  - 6.8.22 Event driven detection width (network input config SNVT_lev_percent nciInvEvtDuty)
7 TROUBLESHOOTING
APPENDIX
REVISIONS

Mitsubishi Electric FR A7NL Instructions Manual

Mitsubishi Electric FR A7NL manual cover

Pages 122

Year 2011

Language(s)

of 122

Mitsubishi Electric FR A7NL Specification

The Mitsubishi Electric FR-A7NL is a sophisticated inverter designed for seamless integration into various industrial applications. It is part of the FR-A700 series, renowned for its advanced performance and reliability. This inverter supports a wide range of motor control functions, providing precise speed and torque regulation, which is critical for optimizing the efficiency of industrial processes.

One of the standout features of the FR-A7NL is its compatibility with network systems, allowing it to be easily integrated into existing factory automation networks. This capability is facilitated by its built-in support for multiple communication protocols, ensuring smooth data exchange and operational synchronization across different devices and systems.

The inverter is engineered for high efficiency and energy savings, equipped with a high-performance vector control system that allows for accurate motor control even at low speeds. This is particularly beneficial in applications that require precise positioning and stable operation under varying load conditions.

Designed with user convenience in mind, the FR-A7NL offers an intuitive user interface, complete with a multilingual LCD display and easy-to-navigate menu options. This simplifies the setup and monitoring process, reducing the need for extensive technical training and support.

Safety is a paramount consideration in the FR-A7NL design, featuring robust protective mechanisms against overcurrent, overvoltage, and overheating, thereby enhancing operational reliability and extending equipment lifespan. The inverter is built with a durable casing that meets international standards for environmental resistance, ensuring consistent performance even in harsh industrial environments.

Overall, the Mitsubishi Electric FR-A7NL inverter is a versatile and robust solution designed to meet the demanding requirements of modern industrial applications, offering superior control, energy efficiency, and network compatibility.

Mitsubishi Electric FR A7NL F.A.Q.

How do I perform a factory reset on the Mitsubishi Electric FR A7NL inverter?

To perform a factory reset on the FR A7NL, enter the parameter setting mode, navigate to the reset setting, and select the factory reset option. Ensure the inverter is stopped and powered down during this process to prevent damage.

What are the common causes of an overcurrent alarm on the FR A7NL?

Common causes of an overcurrent alarm include incorrect motor settings, sudden load changes, or short circuits in the motor or wiring. Verify settings and inspect the motor and cabling for damage.

How can I update the firmware of the FR A7NL inverter?

To update the firmware, connect the inverter to a PC using the appropriate interface, and use Mitsubishi Electric’s firmware update software. Follow the instructions provided in the software carefully to ensure a successful update.

What maintenance steps should be regularly performed on the FR A7NL inverter?

Regular maintenance should include cleaning the cooling fins, checking for loose connections, inspecting for signs of wear or damage, and ensuring that all fans are operational.

How do I troubleshoot a communication error with the FR A7NL?

Check all communication cables for proper connections and any signs of damage. Ensure that communication parameters such as baud rate and parity match between devices. Update or reinstall the communication software if necessary.

Can the FR A7NL inverter be used with a single-phase power supply?

The FR A7NL is primarily designed for three-phase power supplies. Consult the inverter's manual or a Mitsubishi Electric representative for possible configurations with single-phase power.

How do I configure the FR A7NL for energy-saving operation?

Enable the energy-saving mode through the parameter settings. Adjust parameters related to automatic voltage regulation and load optimization to maximize efficiency.

What should I do if the FR A7NL inverter displays an overheating error?

Check the cooling system, including fans and vents, for blockages. Ensure that the inverter is operating within its specified temperature range and consider reducing the load or improving ventilation.

How can I extend the lifespan of my FR A7NL inverter?

Regularly perform maintenance tasks, avoid overloading the inverter, ensure proper installation, and operate within the recommended environmental conditions to extend the inverter's lifespan.

What are the steps to connect the FR A7NL to a PLC system?

Use the appropriate communication interface module to connect the FR A7NL to a PLC. Set up the communication parameters on both the inverter and the PLC, ensuring compatibility and proper addressing.