To Next PageTo Next PageWhat causes the electronic thermal relay function pre-alarm on Mitsubishi Electric FR-E740-5.5K, and how to resolve it?
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.
What causes output phase loss in Mitsubishi Electric FR-E740-5.5K?
If the Mitsubishi Electric Inverter detects a loss in one of the three output phases (U, V, W) during operation, ensure the cables are properly wired. If the motor capacity is smaller than the inverter capacity, choose matching inverter and motor capacities.
How to unlock password on Mitsubishi Electric Inverter?
If the Mitsubishi Electric Inverter is password locked, enter the password in Pr. 297 Password lock/unlock to unlock the password function before operating.
What to do for write disable error on Mitsubishi Electric Inverter?
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.
How to fix calibration error on Mitsubishi Electric FR-E740-5.5K Inverter?
If the Mitsubishi Electric Inverter shows a calibration error, check the settings of calibration parameters C3, C4, C6 and C7 (calibration functions).
General| Brand | Mitsubishi Electric |
|---|---|
| Model | FR-E740-5.5K |
| Category | Inverter |
| Language | English |
Basic wiring instructions for connecting the inverter, power supply, motor, and peripheral devices.
Measures to suppress electromagnetic interference and manage leakage currents for compliance and system stability.
General safety and handling precautions to prevent product damage, shorten lifespan, or ensure correct operation.
Methods for implementing system failsafe using inverter status output signals and external backup systems.
Comprehensive list of all inverter parameters, their settings, and related pages for detailed information.
Procedures for adjusting motor torque, including manual torque boost, automatic control, and stall prevention.
Guidance on selecting motors, motor overheat protection, and using auto-tuning for optimal performance.
Settings for automatic restart and power failure deceleration stop functions to ensure system continuity.
Configuration for retry operation, phase loss protection, and earth fault detection to manage faults.
Procedures for resetting inverter protective functions after a fault or warning occurs.
Reference for understanding and interpreting various fault and alarm codes displayed by the inverter.
Detailed explanations of common causes for errors and warnings, with corresponding corrective actions.
Initial troubleshooting steps and checks to perform when encountering operational issues with the inverter.
