To Next PageTo Next PageWhat causes output phase loss in Mitsubishi Electric FR-E720-5.5K?
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.
What to do if Mitsubishi Electric Inverter has overcurrent trip during constant speed?
If your Mitsubishi Electric Inverter is experiencing an overcurrent trip during constant speed operation, it indicates that an overcurrent has occurred. To address this: * Ensure the load is stable. * Inspect the wiring for any output short circuits or ground faults. * Lower the stall prevention operation level. * Activate the stall prevention operation and the fast-response current limit operation (Pr.156). * If the motor is coasting, bring it to a stop before sending a start command. Alternatively, you can use the automatic restart after instantaneous power failure/flying start function.
How to resolve overcurrent trip during deceleration or stop on Mitsubishi Electric Inverter?
If the Mitsubishi Electric Inverter experiences an overcurrent trip during deceleration or stop, it signifies that an overcurrent has occurred during these phases. Here’s what you can do: * Increase the deceleration time. * Check the wiring for output short circuits or ground faults. * Verify that the mechanical brake isn't activating too early. * Lower the stall prevention operation level. * Activate the stall prevention operation and the fast-response current limit operation (Pr.156). * If the motor is coasting, stop it before issuing a start command. Alternatively, use the automatic restart after instantaneous power failure/flying start function.
How to fix regenerative overvoltage trip during deceleration or stop on Mitsubishi Electric FR-E720-5.5K Inverter?
If your Mitsubishi Electric Inverter is tripping due to regenerative overvoltage during deceleration or stop, it means overvoltage has occurred. Try these solutions: * Increase the deceleration time to match the load's moment of inertia. * Make the brake cycle longer. * Use the regeneration avoidance function (Pr. 882, Pr. 883, Pr.885, Pr.886). * Consider using a brake resistor, brake unit, or power regeneration common converter (FR-CV) as needed.
How to resolve regenerative overvoltage trip during acceleration on Mitsubishi Electric Inverter?
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.
What to do if Mitsubishi Electric Inverter shows inverter overload trip?
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.
How to fix calibration error on Mitsubishi Electric FR-E720-5.5K?
If the Mitsubishi Electric Inverter shows a calibration error, check the settings of calibration parameters C3, C4, C6 and C7 (calibration functions).
How to unlock password on Mitsubishi Electric FR-E720-5.5K 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 causes the electronic thermal relay function pre-alarm on Mitsubishi Electric FR-E720-5.5K, 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 to do if Mitsubishi Electric Inverter shows overcurrent trip during acceleration?
If the Mitsubishi Electric Inverter experiences overcurrent during acceleration, it indicates that overcurrent has occurred. To resolve this, try the following: Set a longer acceleration time. If 'E.OC1' appears at start, disconnect the motor and restart the inverter. If 'E.OC1' persists, the inverter may be faulty and you should contact your sales representative. Check the wiring for output short circuit and ground fault. When the rated motor frequency is 50Hz, set the Pr. 3 Base frequency to 50Hz. Lower the stall prevention operation level. Activate the stall prevention operation and the fast-response current limit operation (Pr.156). For operations with frequent regenerative driving, set the base voltage in Pr. 19 Base frequency voltage.
General| Model | FR-E720-5.5K |
|---|---|
| Series | FR-E700 |
| Rated Output Power | 5.5 kW |
| Horsepower | 7.5 HP |
| Overload Capacity | 150% for 60 seconds |
| Protective Structure | IP20 |
| Control Method | V/f control |
| Frequency Range | 0.5 to 400 Hz |
| Protection Features | Overcurrent, Overvoltage, Undervoltage, Overheat |
