To Next PageTo Next PageWhat to do if Mitsubishi Electric FR-D740-7.5K 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 FR-D740-7.5K 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 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 causes a stall prevention (overcurrent) on a Mitsubishi Electric FR-D740-7.5K and how to fix it?
The overcurrent stall prevention on your Mitsubishi Electric Inverter has been activated. To resolve this: * Increase or decrease the Pr. 0 Torque boost setting by 1% and check the motor status. * Set a larger value in Pr. 7 Acceleration time and Pr. 8 Deceleration time. * Reduce the load weight. * Try General-purpose magnetic flux vector control. * Adjust the Pr. 13 Starting frequency setting. * Change the Pr. 14 Load pattern selection setting. * Set the stall prevention operation current in Pr. 22 Stall prevention operation level.
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 FR-D740-7.5K 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 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).
What causes regenerative overvoltage trip during constant speed on Mitsubishi Electric FR-D740-7.5K?
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| Model | FR-D740-7.5K |
|---|---|
| Series | FR-D700 |
| Rated Output Power | 7.5 kW |
| Horsepower | 10 HP |
| Frame Size | FR-D740 |
| Protection Level | IP20 |
| Cooling Method | Forced air cooling |
| Input Voltage | 3-phase 380 to 480 V AC |
| Rated Input Current | 17 A |
| Frequency Range | 400 Hz |
| Protection | Short-circuit |
| Control Method | Soft-PWM control/high carrier frequency PWM control (V/F control, advanced magnetic flux vector control, optimum excitation control) |
Guidelines for selecting an appropriate installation environment, covering temperature, humidity, atmosphere, and altitude.
Illustrates the standard wiring of the main circuit and control circuit terminals for various inverter models and configurations.
Details on the safety stop function, including terminal descriptions, wiring diagrams, and operation states for safe shutdown.
Measures to address electromagnetic interference and leakage currents, including selection of breakers and filters.
General precautions for safe and proper inverter operation, covering wiring, handling, and environmental considerations.
Methods for implementing failsafe mechanisms using inverter status output signals to prevent accidents.
Details on the names and functions of the operation panel components, including indicators, setting dial, and mode switches.
A comprehensive list of all inverter parameters, their setting ranges, initial values, and related pages for quick reference.
Methods for adjusting motor torque, including manual torque boost, slip compensation, and stall prevention.
Settings for automatic restart, power failure deceleration, and flying start functions to ensure continuous operation.
Configuration of retry functions and fault detection mechanisms for reliable operation and fault management.
Procedures for resetting protective functions after a fault, including using the operation panel, power cycling, or RES signal.
A comprehensive list of error messages, warnings, alarms, and faults displayed on the operation panel, with corresponding referenc
Detailed explanations of common error messages, their possible causes, and recommended corrective actions for troubleshooting.
Technical specifications for the FR-D700 series inverters, including applicable motor capacity, rated capacity, and current ratings.
