To Next PageTo Next PageWhat to do if Mitsubishi Electric Inverter shows PU disconnection?
This function stops the inverter output if communication between the inverter and PU is suspended. Connect the parameter unit cable securely.
What to do if Mitsubishi Electric Inverter has overcurrent trip during acceleration?
If the inverter output current reaches or exceeds approximately 200% of the rated current during acceleration, the protective circuit activates and shuts off the inverter output. You can increase the acceleration time. If "E.OC1" is always lit at starting, disconnect the motor and start the inverter. Check for output short-circuit/ground fault and set 50Hz in Pr. 3 Base frequency.
What causes Mitsubishi Electric FR-D740-15K Inverter overload trip and how to fix it?
The inverter output stops if the temperature of the output transistor element exceeds the protection level when a current not less than the inverter rated current flows and overcurrent trip does not occur (200% or less). To resolve this, increase the acceleration/deceleration time.
What does it mean when my Mitsubishi Electric Inverter shows an inverter overload trip?
An inverter overload trip on your Mitsubishi Electric Inverter means the electronic thermal relay function, which protects the inverter elements, has been activated. To resolve this, try increasing the acceleration/deceleration time, adjusting Pr. 0 Torque boost setting, setting Pr. 14 Load pattern selection appropriately, reducing the load, or ensuring the surrounding air temperature is within the specified limits.
What does output current detection value exceeded mean on Mitsubishi Electric Inverter?
This function is activated when the output current exceeds the Pr. 150 Output current detection level setting. Check the settings of Pr. 150 Output current detection level.
What to do if my Mitsubishi Electric FR-D740-15K Inverter is showing overcurrent trip during constant speed?
If your Mitsubishi Electric Inverter is showing an overcurrent trip during constant speed operation, make sure the load is stable. Also, check the wiring for any output short circuits or ground faults. Try lowering the stall prevention operation level and activating both the stall prevention operation and the fast-response current limit operation (Pr.156).
How to resolve analog input fault on Mitsubishi Electric Inverter?
An analog input fault appears if voltage(current) is input to terminal 4 when the setting in Pr.267 Terminal 4 input selection and the setting of voltage/current input switch are different. Give a frequency command by current input or set Pr. 267 Terminal 4 input selection, and voltage/current input switch to voltage input.
What happens when Mitsubishi Electric Inverter has output phase loss?
If one of the three phases (U, V, W) on the inverter's output side (load side) is lost during inverter operation, the inverter stops the output. Ensure that the cables are wired properly.
What to do if my Mitsubishi Electric FR-D740-15K Inverter shows overcurrent trip during deceleration or stop?
If your Mitsubishi Electric Inverter shows an overcurrent trip during deceleration or at a stop, try these steps: Increase the deceleration time. Check the wiring, looking for output short circuits or ground faults. Verify that the mechanical brake isn't activating too early. Also, consider lowering the stall prevention operation level and activating the stall prevention operation and the fast-response current limit operation (Pr.156).
What causes regenerative overvoltage trip during constant speed on Mitsubishi Electric FR-D740-15K?
If regenerative energy causes the inverter's internal main circuit DC voltage to reach or exceed the specified value, the protective circuit is activated to stop the inverter output. Ensure that you keep load stable.
General| Brand | Mitsubishi Electric |
|---|---|
| Model | FR-D740-15K |
| Category | Inverter |
| Language | English |
Describes the terminal connection diagram for the inverter, including main circuit and control circuit.
Lists essential precautions to prevent product damage or shortened lifespan due to incorrect handling or peripheral circuits.
Explains how to provide system interlocks using inverter status output signals to prevent accidents.
Covers motor overheat protection, applied motor settings, and offline auto tuning for best performance.
Describes functions like retry operation, phase loss protection, and ground fault detection for fault handling.
Describes the procedures for resetting protective functions and recovering from faults.
Provides a comprehensive list of fault and alarm codes, their names, and corresponding page references.
Details the common causes of errors, warnings, and faults, along with their respective corrective actions.
Offers a systematic checklist for diagnosing common issues like motor not starting or abnormal noise.
