H
heather67Sep 23, 2025
What to do if Mitsubishi Electric FR-E740-040 Inverter has PU stop?
- DDr. Kathryn MartinezSep 23, 2025
If the Mitsubishi Electric Inverter experiences a PU stop, turn the start signal off and release.
To Next PageTo Next PageWhat to do if Mitsubishi Electric FR-E740-040 Inverter has PU stop?
If the Mitsubishi Electric Inverter experiences a PU stop, turn the start signal off and release.
What to do if Mitsubishi Electric FR-E740-040 trips due to overcurrent during acceleration?
Here are some possible solutions: 1. Increase the acceleration time. 2. If "E.OC1" is continuously lit at startup, disconnect the motor and then start the inverter. 3. Inspect the wiring to ensure there is no output short circuit or ground fault. 4. Enable stall prevention operation. 5. Set the base voltage (rated voltage of the motor) in Pr. 19 Base frequency voltage.
How to fix write disable error on Mitsubishi Electric FR-E740-040?
A write disable error on your Mitsubishi Electric Inverter may occur due to several reasons: * If Pr. 77 Parameter write selection is set to disable parameter write, check this setting. * If the frequency jump setting range is overlapping, review the settings of Pr. 31 to Pr. 36 (frequency jump). * If the PU and inverter are not communicating correctly, verify the connection between the PU and the inverter.
What to do if Mitsubishi Electric FR-E740-040 Inverter shows regenerative brake prealarm?
If you're seeing a regenerative brake prealarm on your Mitsubishi Electric Inverter: 1. Try increasing the deceleration time. 2. Make sure that the Pr. 30 Regenerative function selection and Pr. 70 Special regenerative brake duty settings are configured correctly.
Why is Mitsubishi Electric FR-E740-040 Inverter showing electronic thermal relay function prealarm?
If your Mitsubishi Electric Inverter is showing an electronic thermal relay function prealarm: 1. Reduce the load and frequency of operation. 2. Set an appropriate value in Pr. 9 Electronic thermal O/L relay.
How to resolve calibration error on Mitsubishi Electric FR-E740-040 Inverter?
To address a calibration error on your Mitsubishi Electric Inverter, check the settings of C3, C4, C6, and C7 (calibration functions).
What to do if Mitsubishi Electric FR-E740-040 Inverter has analog input fault?
If your Mitsubishi Electric Inverter is showing an analog input fault, either provide a frequency command via current input or set Pr. 267 Terminal 4 input selection, and voltage/current input switch to voltage input.
How to resolve mode designation error on Mitsubishi Electric Inverter?
To resolve a mode designation error on your Mitsubishi Electric Inverter, ensure you make parameter settings after setting the operation mode to the "PU operation mode", or after setting "2" in Pr. 77.
How to fix ground fault on Mitsubishi Electric FR-E740-040 Inverter?
To fix a ground fault on your Mitsubishi Electric Inverter, locate and repair the ground fault.
What to do if Mitsubishi Electric FR-E740-040 Inverter shows input phase loss?
If your Mitsubishi Electric Inverter indicates an input phase loss: * Ensure the cables are wired correctly. * Repair any breaks in the cable. * Verify the Pr. 872 Input phase loss protection selection setting.
General| Brand | Mitsubishi Electric |
|---|---|
| Model | FR-E740-040 |
| Category | Inverter |
| Language | English |
Explains the general characteristics and installation requirements of the FR-E700 series inverter.
Covers terminal connections, specifications, and wiring guidelines for main and control circuits, plus option units.
Details critical safety information, EMC measures, installation guidelines, and failsafe system configurations.
Provides a comprehensive guide to inverter parameters, operation modes, motor settings, and special functions.
Offers guidance on resetting protective functions, identifying faults, causes, and corrective actions for common issues.
Outlines essential maintenance procedures, inspection items, and part replacement guidelines for long-term reliability.
Lists the technical specifications of the inverter, including ratings, common specs, and outline dimension drawings.
Contains supplementary information, including comparisons with previous models, specification changes, and an index.
