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 FR-D720S-0.75K 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-D720S-0.75K 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 output current detection value exceeded mean on Mitsubishi Electric FR-D720S-0.75K 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 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 FR-D720S-0.75K 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-D720S-0.75K 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 Inverter?
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.
What causes motor overload trip on Mitsubishi Electric Inverter?
The electronic thermal relay function in the inverter detects motor overheat due to overload or reduced cooling capability during low-speed operation. To resolve this, reduce the load weight.
General| Model | FR-D720S-0.75K |
|---|---|
| Series | FR-D700 |
| Rated Output Power | 0.75 kW |
| Horsepower | 1 HP |
| Control Method | V/f control |
| Protection Rating | IP20 |
| Cooling Method | Fan Cooled |
| Protection Features | Overcurrent, Overvoltage, Undervoltage, Overheat |
| Weight | 1.5 kg |
Addresses leakage currents, countermeasures, and selection of earth leakage current breakers.
General safety precautions for handling, wiring, operation, and maintenance to prevent product damage or failure.
Methods to ensure system safety by interlocking inverter status output signals and implementing backup systems.
Details on the names and functions of the operation panel components, including indicators, buttons, and display.
Comprehensive list of all inverter parameters, their setting ranges, initial values, and related pages.
Guidance on adjusting manual torque boost and magnetic flux vector control for optimal motor performance.
Guidelines for selecting motors, setting overheat protection, and using offline auto tuning for optimal performance.
Configuration of input and output terminals, communication settings, and safety stop functions.
Settings for automatic restart and power-failure deceleration-to-stop functions.
Configuration of retry functions, phase loss protection, and earth fault detection at start.
Functions to prevent incorrect operations, parameter rewrites, and unauthorized access.
Configuring the inverter's operation mode (PU, External, Network) and command sources.
Instructions for setting up communication with computers via PU connector using Mitsubishi or Modbus-RTU protocols.
Steps to reset protective functions after a fault, including power OFF/ON and using the RES signal.
A comprehensive list of error messages, warnings, alarms, and faults with their corresponding page references.
Detailed guide to diagnose and resolve common causes of error messages, warnings, and faults.
Troubleshooting steps for common issues like motor not starting, abnormal noise, or incorrect speed.
Detailed specifications including applicable motor capacity, rated capacity, current, voltage, and power supply requirements.
