To Next PageTo Next PageHow to fix communication option fault on Mitsubishi Electric Inverter?
To troubleshoot a communication option fault on your Mitsubishi Electric Inverter: 1. Check the option function setting. 2. Ensure the plug-in option is securely connected. 3. Verify the connection of the communication cable. 4. Confirm that the terminating resistor is correctly connected.
What to do if Mitsubishi Electric FR-E740-230 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-E740-230 Inverter?
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 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-E740-230 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.
What to do for regenerative overvoltage trip during acceleration on Mitsubishi Electric Inverter?
To resolve regenerative overvoltage trip during acceleration on your Mitsubishi Electric Inverter: 1. Decrease the acceleration time. 2. Ensure that the regeneration avoidance function (Pr. 882, Pr. 883, Pr. 885, Pr. 886) is enabled and properly configured.
What to do if Mitsubishi Electric Inverter shows PU disconnection?
If your Mitsubishi Electric Inverter displays a PU disconnection error, ensure the parameter unit (FR-PU04/FR-PU07) is securely connected.
How to fix ground fault on Mitsubishi Electric Inverter?
To fix a ground fault on your Mitsubishi Electric Inverter, locate and repair the ground fault.
What to do if Mitsubishi Electric FR-E740-230 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.
How to fix stall prevention on Mitsubishi Electric FR-E740-230?
To address stall prevention issues with your Mitsubishi Electric Inverter: * Reduce the load weight. * Check the Pr. 22 Stall prevention operation level setting.
General| Brand | Mitsubishi Electric |
|---|---|
| Model | FR-E740-230 |
| Category | Inverter |
| Language | English |
General safety precautions for handling, wiring, and operating the inverter to prevent damage or faults.
Methods for implementing failsafe mechanisms using inverter status output signals to prevent accidents during inverter failure.
A comprehensive list of all inverter parameters, their settings, initial values, and related pages for detailed information.
Methods for adjusting motor torque, including manual boost, slip compensation, and stall prevention.
How to configure automatic restart and power failure stop functions for continuous operation.
Functions to prevent misoperation, such as reset selection, parameter write disable, and password protection.
How to view and clear the inverter's fault history.
Procedures for resetting the inverter after a fault or alarm occurs.
A table listing all possible fault and alarm codes, their names, and corresponding page numbers for details.
Detailed explanations of common causes for inverter errors and recommended corrective actions.
A troubleshooting guide that lists common issues and their possible causes and solutions.
