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Christopher DiazAug 19, 2025
How to unlock password on Mitsubishi Inverter?
- JJames BrewerAug 20, 2025
To unlock a password-locked Mitsubishi Inverter, enter the password in Pr. 297 Password lock/unlock before operating.
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To unlock a password-locked Mitsubishi Inverter, enter the password in Pr. 297 Password lock/unlock before operating.
How to unlock operation panel on Mitsubishi FR-D740-2.2K?
To release the operation panel lock on the Mitsubishi Inverter, press the lock button for 2 seconds.
What to do if Mitsubishi Inverter shows overload trip error?
If the temperature of the output transistor element exceeds the protection level when a current not less than the rated inverter current flows (200% or less), the electronic thermal relay activates, stopping the Mitsubishi Inverter output. To resolve this, try increasing the acceleration/deceleration time or adjusting the torque boost setting.
Why is my Mitsubishi Inverter showing an undervoltage error?
If the Mitsubishi Inverter's power supply voltage decreases, the control circuit won't function normally. Check the power supply system equipment, including the power supply itself, to resolve this issue.
How to fix a write disable error on a Mitsubishi FR-D740-2.2K Inverter?
A write disable error on your Mitsubishi Inverter can occur due to several reasons. First, it could be because you're trying to change a parameter when Pr. 77 (Parameter write selection) is set to disable writing. Check the setting of Pr. 77 to resolve this. Second, the frequency jump setting range might be overlapping; review the settings of Pr. 31 to Pr. 36 (frequency jump). Finally, the PU and inverter may not be communicating correctly; check their connection.
What causes a motor overload trip on a Mitsubishi Inverter?
The Mitsubishi Inverter's electronic thermal relay function detects motor overheat, which can be caused by overload or reduced cooling during constant-speed operation. To resolve this, reduce the load weight.
What does stall prevention (overcurrent) mean on a Mitsubishi FR-D740-2.2K?
During acceleration, if the Mitsubishi Inverter's output current exceeds the stall prevention operation level (Pr. 22 Stall prevention operation level, etc.), the function stops the frequency increase until the overload current decreases. This prevents the inverter from an overcurrent trip.
What to do if Mitsubishi FR-D740-2.2K Inverter shows input phase loss?
The Mitsubishi Inverter trips if Pr. 872 Input phase loss protection selection is set to valid (=1) and one phase of the three-phase power input is lost. Ensure the cables are properly wired and repair any breaks in the cable.
Why does my Mitsubishi FR-D740-2.2K show a write error during operation?
A write error during operation on a Mitsubishi Inverter happens when parameter writing is performed during operation with a value other than "2" set in Pr. 77, and the STF (STR) is ON. To solve this, set "2" in Pr. 77 or stop the operation before making parameter settings.
How to troubleshoot output phase loss on a Mitsubishi Inverter?
Output phase loss on a Mitsubishi Inverter occurs if one of the three phases (U, V, W) on the inverter's output side is lost during operation. Ensure the cables are properly wired.
General| Model | FR-D740-2.2K |
|---|---|
| Series | FR-D700 |
| Output Power | 2.2 kW |
| Horsepower | 3 HP |
| Rated Output Current | 5.0 A |
| Output Current | 5.0 A |
| Frame Size | A |
| Cooling Method | Fan cooled |
| Output Frequency | 0-400 Hz |
| Frequency Range | 0.2-400Hz |
| Control Method | V/f Control |
| Protection | Overvoltage, Undervoltage, Overcurrent |
| Protection Features | Short Circuit |
| Input Voltage | 3-phase, 380-480V AC |
Detailed instructions for connecting power, control, and motor circuits to the inverter.
Essential safety guidelines and warnings to prevent product damage or injury.
Methods to ensure system safety by detecting inverter faults or failures.
Description of the inverter's operation panel, its keys, and display functions.
A comprehensive guide to inverter error messages, warnings, and alarm codes.
Troubleshooting steps for common error messages and operational issues.
A systematic guide to diagnosing and resolving common operational problems.
