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Mitsubishi Electric FR-E740-2.2K - User Manual

Mitsubishi Electric FR-E740-2.2K
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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

Questions and Answers

  • S
    stanleyjonathonNov 21, 2025
    How to fix overcurrent trip during acceleration on Mitsubishi Electric FR-E740-2.2K Inverter?
    • G
      George RobbinsNov 21, 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...
  • J
    James FosterSep 13, 2025
    How to fix calibration error on Mitsubishi Electric FR-E740-2.2K Inverter?
    • D
      diana60Sep 13, 2025
      If the Mitsubishi Electric Inverter shows a calibration error, check the settings of calibration parameters C3, C4, C6 and C7 (calibration functions).
  • T
    Tracy SmithSep 10, 2025
    How to unlock password on Mitsubishi Electric Inverter?
    • H
      hamiltonmichaelSep 10, 2025
      If the Mitsubishi Electric Inverter is password locked, enter the password in Pr. 297 Password lock/unlock to unlock the password function before operating.
  • E
    Edgar Jenkins MDAug 27, 2025
    How to resolve regenerative overvoltage trip during acceleration on Mitsubishi Electric FR-E740-2.2K?
    • D
      David AdamsAug 27, 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.
  • S
    Sue ParkerAug 29, 2025
    What to do if Mitsubishi Electric FR-E740-2.2K shows inverter overload trip?
    • J
      John SmithAug 29, 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.
  • K
    kanerossAug 30, 2025
    What to do if Mitsubishi Electric Inverter heatsink overheat?
    • K
      Kyle StevensAug 30, 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.
  • S
    Suzanne OrtizSep 1, 2025
    Why does Mitsubishi Electric Inverter show input phase loss?
    • B
      Brandon GarrettSep 1, 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.
  • J
    Jennifer BradySep 2, 2025
    What causes stall prevention stop on Mitsubishi Electric FR-E740-2.2K Inverter?
    • C
      Charles ThomasSep 3, 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).
  • W
    William BellSep 14, 2025
    How to clear maintenance signal output on Mitsubishi Electric Inverter?
    • B
      Bruce HatfieldSep 15, 2025
      If the Mitsubishi Electric Inverter outputs a maintenance signal, and the cumulative energization time has exceeded the maintenance output timer set value, setting '0' in Pr. 503 Maintenance timer erases the signal.
  • D
    danielle40Sep 12, 2025
    What to do for write disable error on Mitsubishi Electric FR-E740-2.2K?
    • E
      Elizabeth HarrisSep 12, 2025
      If the Mitsubishi Electric Inverter is showing a write disable error, check the setting of Pr. 77 Parameter write selection, the settings of Pr. 31 to Pr. 36 (frequency jump), and the connection of PU and the inverter.

Summary

PRECAUTIONS FOR USE OF THE INVERTER

EMC and leakage currents

Precautions for use of the inverter

Lists essential safety and handling precautions for general inverter operation, wiring, and environment.

Failsafe of the system which uses the inverter

PARAMETERS

Parameter list

Provides a comprehensive list of inverter parameters, their settings, instruction codes, and related pages.

Adjust the output torque (current) of the motor

Details methods to adjust motor torque, including manual boost, slip compensation, and stall prevention.

Frequency setting by external terminals

Setting of acceleration;deceleration time and acceleration;deceleration pattern

Selection and protection of a motor

Guides on selecting motors, implementing protection mechanisms, and performing auto-tuning.

Motor brake and stop operation

Details methods for motor braking and stopping, including DC injection, regenerative braking, and stop-on-contact.

Function assignment of external terminal and control

Explains how to assign functions to input and output terminals and select control signals for various operations.

Monitor display and monitor output signal

Operation selection at power failure and instantaneous power failure

Covers automatic restart, deceleration, and operation continuation functions during power interruptions.

Operation setting at fault occurrence

Details settings for handling faults, including retry functions, phase loss protection, and earth fault detection.

Frequency setting by analog input (terminal 2, 4)

Misoperation prevention and parameter setting restriction

Selection of operation mode and operation location

Explains how to select and manage different operation modes (PU, External, Network) and their control sources.

TROUBLESHOOTING

Reset method of protective function

Explains procedures to reset protective functions and recover from faults using operation panel or signals.

List of fault or alarm indications

Provides a comprehensive list of fault codes, indications, and their corresponding reference pages.

Causes and corrective actions

Details common causes of operational issues like error messages, warnings, alarms, and faults with corrective actions.

Check first when you have some troubles

Offers initial checks for common problems like motor not starting, abnormal noise, or improper operation mode.

Mitsubishi Electric FR-E740-2.2K Specifications

General IconGeneral
ModelFR-E740-2.2K
SeriesFR-E700
Applicable Motor Capacity (kW)2.2
Output Power2.2 kW
Output Voltage3-phase 380 to 480 V
Overload Capacity150% for 60 seconds
Protection LevelIP20
Weight1.5 kg
Control MethodPWM Control
Output Frequency Range0.2 to 400 Hz
Frequency Range0.2 to 400 Hz
Protection StructureIP20
Input Voltage3-phase 380 to 480 V

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