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Mitsubishi Electric FR-E720-5.5K - User Manual

Mitsubishi Electric FR-E720-5.5K
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HEAD OFFICE: TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
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FR-E700
INSTRUCTION MANUAL (Applied)
INVERTER
PRECAUTIONS FOR USE
OF THE INVERTER
PARAMETERS
TROUBLESHOOTING
PRECAUTIONS FOR
MAINTENANCE AND INSPECTION
SPECIFICATIONS
OUTLINE
WIRING
MODEL
MODEL
CODE
1A2-P26
FR-E700
INSTRUCTION MANUAL (Applied)
FR-E720-0.1K to 15K
FR-E740-0.4K to 15K
FR-E720S-0.1K to 2.2K
FR-E710W-0.1K to 0.75K
IB(NA)-0600277ENG-D (0812)MEE Printed in Japan Specifications subject to change without notice.
FR-E700 INVERTER INSTRUCTION MANUAL (Applied)
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Table of Contents

Other manuals for Mitsubishi Electric FR-E720-5.5K

Preview: Instructions
Instructions89 pages

Questions and Answers

  • D
    diamondkellyNov 22, 2025
    How to fix overcurrent trip during acceleration on Mitsubishi Electric FR-E720-5.5K?
    • S
      Stephanie McclureNov 22, 2025
      If the Mitsubishi Electric Inverter experiences an overcurrent trip during acceleration, it means that an overcurrent has occurred. To resolve this, try the following: * Increase the acceleration time. * Check for output short circuits or ground faults in the wiring. * If 'E.OC1' appears consistently at start, disconnect and restart the inverter. If the problem persists, the inverter may be faulty and you should contact your sales representative. * Ensure the base frequency is correctly set (Pr. 3) for your motor (50Hz). * Reduce the stall prevention operation level and activate both stall prevention and fast-response current limit operations (Pr.156). * For regenerative driving, adjust the base voltage in Pr. 19. * If the motor is coasting, stop it before issuing a start co...
  • F
    Fred FosterAug 25, 2025
    What to do if Mitsubishi Electric Inverter has overcurrent trip during constant speed?
    • A
      Amanda HoffmanAug 25, 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.
  • G
    Gail GreenAug 27, 2025
    How to resolve overcurrent trip during deceleration or stop on Mitsubishi Electric Inverter?
    • J
      Joe KirbyAug 27, 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.
  • M
    Miss Judith Gregory DDSAug 27, 2025
    How to fix regenerative overvoltage trip during deceleration or stop on Mitsubishi Electric FR-E720-5.5K Inverter?
    • W
      webbmeganAug 27, 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.
  • K
    Kevin CarterAug 29, 2025
    How to resolve regenerative overvoltage trip during acceleration on Mitsubishi Electric Inverter?
    • P
      Pamela StevensAug 29, 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.
  • B
    brandon20Sep 23, 2025
    What to do if Mitsubishi Electric Inverter shows brake transistor alarm detection?
    • V
      Victoria MarshallSep 23, 2025
      If the Mitsubishi Electric Inverter detects a fault in the brake circuit, such as a brake transistor breakage, replace the inverter.
  • D
    Dean IngramSep 16, 2025
    What causes undervoltage on Mitsubishi Electric Inverter?
    • E
      ericmooreSep 16, 2025
      If the Mitsubishi Electric Inverter detects undervoltage, it means the voltage at the main circuit power has been lowered. Investigate the devices on the power supply line, including the power supply itself.
  • J
    Jimmy JonesSep 18, 2025
    What does fan alarm mean on Mitsubishi Electric FR-E720-5.5K?
    • C
      Christopher OchoaSep 18, 2025
      If the Mitsubishi Electric Inverter triggers a fan alarm, it indicates that the cooling fan is at a standstill or has decelerated. Check for fan failure and contact your sales representative.
  • A
    Amy CohenSep 8, 2025
    What causes the electronic thermal relay function pre-alarm on Mitsubishi Electric FR-E720-5.5K, and how to resolve it?
    • A
      Amy PerezSep 8, 2025
      If the cumulative value of the electronic thermal O/L relay has reached 85% of the Pr. 9 Electronic thermal O/L relay setting or higher on your Mitsubishi Electric Inverter, reduce the load and frequency of operation. Also, set an appropriate value in Pr. 9 Electronic thermal O/L relay.
  • T
    Tyler HumphreySep 5, 2025
    What to do if Mitsubishi Electric Inverter shows overcurrent trip during acceleration?
    • R
      Randy BrownSep 5, 2025
      If the Mitsubishi Electric Inverter experiences overcurrent during acceleration, it indicates that overcurrent has occurred. To resolve this, try the following: Set a longer acceleration time. If 'E.OC1' appears at start, disconnect the motor and restart the inverter. If 'E.OC1' persists, the inverter may be faulty and you should contact your sales representative. Check the wiring for output short circuit and ground fault. When the rated motor frequency is 50Hz, set the Pr. 3 Base frequency to 50Hz. Lower the stall prevention operation level. Activate the stall prevention operation and the fast-response current limit operation (Pr.156). For operations with frequent regenerative driving, set the base voltage in Pr. 19 Base frequency voltage.

Summary

OUTLINE

Product checking and parts identification

WIRING

Wiring

Covers the basic wiring procedures, including terminal connections for main and control circuits.

Main circuit terminal specifications

PRECAUTIONS FOR USE OF THE INVERTER

EMC and leakage currents

Discusses electromagnetic compatibility measures and handling of leakage currents to prevent malfunctions.

Precautions for use of the inverter

Outlines essential checks and handling procedures to prevent product damage or shortened lifespan.

Failsafe of the system which uses the inverter

PARAMETERS

Operation panel

Parameter list

Lists all parameters with their names, setting ranges, initial values, and cross-references for easy setting and adjustment.

Control mode

Adjust the output torque (current) of the motor

Explains how to adjust motor torque boost, compensate for slip, and prevent inverter trips.

Frequency setting by external terminals

Setting of acceleration;deceleration time and acceleration;deceleration pattern

Selection and protection of a motor

Guides on selecting the appropriate motor and implementing protective functions like overheat protection.

Motor brake and stop operation

Covers DC injection braking, regenerative braking, and various stop-on-contact control methods.

Function assignment of external terminal and control

Explains how to assign functions to input and output terminals for controlling inverter operations.

Operation selection at power failure and instantaneous power failure

Describes functions for automatic restart and deceleration stop upon power restoration or failure.

Operation setting at fault occurrence

Covers retry functions and phase loss protection settings to handle faults and ensure continuous operation.

Frequency setting by analog input (terminal 2, 4)

Misoperation prevention and parameter setting restriction

Covers functions to prevent accidental parameter changes and ensure safe operation.

Selection of operation mode and operation location

TROUBLESHOOTING

Reset method of protective function

Explains how to reset the inverter after a fault or warning occurs, restoring normal operation.

List of fault or alarm indications

Causes and corrective actions

Check first when you have some troubles

PRECAUTIONS FOR MAINTENANCE AND INSPECTION

Inspection items

Mitsubishi Electric FR-E720-5.5K Specifications

General IconGeneral
ModelFR-E720-5.5K
SeriesFR-E700
Rated Output Power5.5 kW
Horsepower7.5 HP
Overload Capacity150% for 60 seconds
Protective StructureIP20
Control MethodV/f control
Frequency Range0.5 to 400 Hz
Protection FeaturesOvercurrent, Overvoltage, Undervoltage, Overheat

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