Mitsubishi Electric FR-E720-0.4K-NE User Manual

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FR-E700

INSTRUCTION MANUAL (BASIC)

FR-E720-0.1K to 15K-NE

FR-E740-0.4K to 15K-NE

FR-E720S-0.1K to 2.2K-NE

INVERTER

Ethernet communication function

IB(NA)-0600712ENG-B(1706)MEE Printed in Japan Specifications subject to change without notice.

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HEAD OFFICE: TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

CONTENTS

OUTLINE ...................................................................................1

INSTALLATION AND WIRING ................................................... 6

PRECAUTIONS FOR USE OF THE INVERTER ........................20

FAILSAFE OF THE SYSTEM WHICH USES THE INVERTER ...23

DRIVING THE MOTOR ............................................................24

ENERGY SAVING OPERATION FOR FANS AND PUMPS ........35

PARAMETERS .........................................................................36

TROUBLESHOOTING ..............................................................41

PRECAUTIONS FOR MAINTENANCE AND INSPECTION........46

SPECIFICATIONS....................................................................48

Thank you for choosing this Mitsubishi Electric Inverter.

This Instruction Manual (Basic) provides handling information and precautions for use of the equipment.

Please forward this Instruction Manual (Basic) to the end user.

To obtain the related manuals

Contact where you purchased the inverter, your Mitsubishi Electric sales

representative, or the nearest Mitsubishi Electric FA Center for the

following manuals:

 FR-E700 Instruction Manual (Applied) [IB(NA)-0600277ENG]

 FR-E700-NE Ethernet Function Manual [IB(NA)-0600724ENG]

These manuals are required if you are going to utilize functions and

performance.

The PDF manuals are also available for download at the Mitsubishi

Electric FA Global Website (URL: http://www.MitsubishiElectric.co.jp/fa).

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Questions and Answers:

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Jordan RomeroAug 19, 2025
What to do if Mitsubishi Electric FR-E720-0.4K-NE Inverter has overcurrent trip during constant speed?
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  Wendy WarnerAug 19, 2025
  If your Mitsubishi Electric Inverter is experiencing an overcurrent trip during constant speed operation, it indicates that an overcurrent has occurred. To address this: * Ensure the load is stable. * Inspect the wiring for any output short circuits or ground faults. * Lower the stall prevention operation level. * Activate the stall prevention operation and the fast-response current limit operation (Pr.156). * If the motor is coasting, bring it to a stop before sending a start command. Alternatively, you can use the automatic restart after instantaneous power failure/flying start function.
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Seth FischerAug 21, 2025
How to resolve overcurrent trip during deceleration or stop on Mitsubishi Electric Inverter?
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  Natasha BlackAug 22, 2025
  If the Mitsubishi Electric Inverter experiences an overcurrent trip during deceleration or stop, it signifies that an overcurrent has occurred during these phases. Here’s what you can do: * Increase the deceleration time. * Check the wiring for output short circuits or ground faults. * Verify that the mechanical brake isn't activating too early. * Lower the stall prevention operation level. * Activate the stall prevention operation and the fast-response current limit operation (Pr.156). * If the motor is coasting, stop it before issuing a start command. Alternatively, use the automatic restart after instantaneous power failure/flying start function.
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David JonesAug 25, 2025
How to fix regenerative overvoltage trip during deceleration or stop on Mitsubishi Electric FR-E720-0.4K-NE Inverter?
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  Michael JohnsonAug 26, 2025
  If your Mitsubishi Electric Inverter is tripping due to regenerative overvoltage during deceleration or stop, it means overvoltage has occurred. Try these solutions: * Increase the deceleration time to match the load's moment of inertia. * Make the brake cycle longer. * Use the regeneration avoidance function (Pr. 882, Pr. 883, Pr.885, Pr.886). * Consider using a brake resistor, brake unit, or power regeneration common converter (FR-CV) as needed.
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Hannah FowlerAug 28, 2025
How to resolve regenerative overvoltage trip during acceleration on Mitsubishi Electric FR-E720-0.4K-NE?
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  Laura ArroyoAug 28, 2025
  If your Mitsubishi Electric Inverter is tripping due to regenerative overvoltage during acceleration, it means overvoltage has occurred during acceleration. Here are some steps to take: * Decrease the acceleration time. * Implement the regeneration avoidance function using parameters Pr. 882, Pr. 883, Pr.885, and Pr. 886. * Ensure that the stall prevention operation level (Pr. 22) is set correctly.
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Madison WoodsSep 1, 2025
What to do if Mitsubishi Electric FR-E720-0.4K-NE Inverter shows inverter overload trip?
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  Peter BenitezSep 1, 2025
  If the Mitsubishi Electric Inverter experiences an overload trip (electronic thermal O/L relay function), it signifies that the electronic thermal relay function for inverter element protection has been activated. To address this: * Increase the acceleration time. * Adjust the torque boost setting (Pr. 0). * Configure the load pattern selection setting (Pr. 14) according to the machine's load pattern. * Reduce the load. * Ensure the surrounding air temperature is within specified limits.
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cody10Sep 4, 2025
What to do if Mitsubishi Electric FR-E720-0.4K-NE heatsink overheat?
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  tevansSep 4, 2025
  If your Mitsubishi Electric Inverter's heatsink is overheating, it indicates that the heatsink temperature is too high. To address this: * Ensure the surrounding air temperature is within the specified limits. * Clean the heatsink to remove any dust or obstructions. * Replace the cooling fan if it is not functioning correctly.
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Jessica McdanielSep 7, 2025
Why does Mitsubishi Electric FR-E720-0.4K-NE Inverter show input phase loss?
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  Sharon BrooksSep 7, 2025
  If the Mitsubishi Electric Inverter is indicating an input phase loss, it means one of the three input phases is missing or the phase-to-phase voltage is significantly unbalanced. To resolve this: * Ensure all cables are correctly wired. * Repair any breaks in the cable. * Check the input phase loss protection setting (Pr. 872). If the three-phase input voltage is largely unbalanced, set Pr. 872 to '0' to disable input phase loss protection.
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zacharygarciaSep 12, 2025
What causes stall prevention stop on Mitsubishi Electric FR-E720-0.4K-NE Inverter?
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  William WilliamsSep 12, 2025
  If the Mitsubishi Electric Inverter has a stall prevention stop, it means the output frequency has decreased to 1Hz because of deceleration caused by excessive motor load. To fix this, reduce the load and check the stall prevention operation level setting (Pr. 22).

Mitsubishi Electric FR-E720-0.4K-NE Specifications

General

Brand	Mitsubishi Electric
Model	FR-E720-0.4K-NE
Category	Inverter
Language	English

Summary

Safety Precautions

Electric Shock Prevention

Detailed measures to avoid electrical hazards during operation and maintenance.

Fire and Injury Prevention

Precautions to prevent fires and physical injuries from inverter use.

Additional Safety Instructions

2 INSTALLATION AND WIRING

Peripheral Devices Selection

Wiring and Terminal Specifications

Detailed diagrams and specifications for connecting power, control circuits, and terminals.

3 PRECAUTIONS FOR USE OF THE INVERTER

General Usage and Environmental Precautions

Key considerations for safe and effective inverter operation and longevity.

4 FAILSAFE OF THE SYSTEM WHICH USES THE INVERTER

Interlock and Backup Methods

5 DRIVING THE MOTOR

Start/Stop Operations (PU and External)

How to start, stop, and control the motor via the operation panel or external signals.

Setting Frequency via Operation Panel

Setting motor speed using the operation panel's frequency setting mode.

Start/Stop Using Terminals (External Operation)

Acquiring High Starting Torque

7 PARAMETERS

Parameter List and Settings Overview

Comprehensive list and explanation of inverter parameters for configuration.

8 TROUBLESHOOTING

Resetting Protective Functions

Procedures for resetting the inverter after faults or alarms occur.

Fault and Alarm Display List

Codes and descriptions for inverter faults, alarms, and warnings with corrective actions.

Common Troubleshooting Checks

9 PRECAUTIONS FOR MAINTENANCE AND INSPECTION

Inspection Items and Schedule

10 SPECIFICATIONS

Rating Specifications

Warranty

Warranty Terms and Limitations

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