To Next PageTo Next PageWhat to do if Mitsubishi Electric FR-S520SE-0.75K speed greatly differs from setting?
If the speed greatly differs from the setting, check that the frequency setting signal is correct, confirm that the following parameter settings are correct: Pr. 38, Pr. 39, Pr. 95, C2 to C7, and ensure that the input signal lines are not affected by noise.
Why does the speed vary during operation of my Mitsubishi Electric FR-S520SE-0.75K Inverter?
The speed variation during operation of your Mitsubishi Electric Inverter may be due to several factors: a varying load, a fluctuating frequency setting signal, noise affecting the frequency setting signal, a malfunction caused by undesirable current when a transistor output unit is connected, an excessively long wiring length or a small GD[2] load. You can also try setting the Pr. 72 "PWM frequency selection" to 6kHz or higher.
Why does the speed greatly differ from the setting on my Mitsubishi Electric FR-S520SE-0.75K?
A significant difference between the set speed and the actual speed of your Mitsubishi Electric Inverter can occur if the frequency setting signal is incorrect. Also, check the parameter settings for Pr. 38, Pr. 39, Pr. 95, C2 to C7. Ensure that the input signal lines are not affected by shielded cables.
How to fix unsmooth acceleration/deceleration on Mitsubishi Electric FR-S520SE-0.75K?
To address unsmooth acceleration or deceleration on your Mitsubishi Electric Inverter, verify that the acceleration and deceleration time settings are correct. Also, check if the load is too heavy.
What to do if Mitsubishi Electric FR-S520SE-0.75K motor remains stopped?
If your Mitsubishi Electric Inverter motor remains stopped, check if the main circuit display is active and the motor is properly connected. Ensure the jumper across P-P1 is connected and that the start signal is being input. Also, confirm that the frequency setting signal is not zero and the operation mode (Pr. 79) setting is correct. Finally, verify that the load isn't too heavy and the shaft isn't locked.
Why does the speed not increase on my Mitsubishi Electric FR-S520SE-0.75K?
If the speed on your Mitsubishi Electric Inverter is not increasing, verify that the maximum frequency setting is not set to zero. Also, check to see if the load is too heavy.
Why Mitsubishi Electric Inverter speed does not increase?
If the speed does not increase, check that the maximum frequency setting is correct and that the load is not too heavy.
Why Mitsubishi Electric FR-S520SE-0.75K speed varies during operation?
If the speed varies during operation, verify that the load isn't varying, the frequency setting signal isn't varying or affected by noise, the wiring length isn't too long, and the GD[2] load isn't small (at the motor GD[2] or smaller).
Why Mitsubishi Electric FR-S520SE-0.75K Inverter motor current is large?
If the motor current is large, verify that the load isn't too heavy and that the torque boost setting isn't excessively high.
Why parameter write cannot be performed on Mitsubishi Electric Inverter?
If you cannot write parameters to your Mitsubishi Electric Inverter, make sure that operation is not being performed (signal). Check that the SET (WRITE) button was pressed and that you are not attempting to set the parameter write range or the operation mode.
General| Model | FR-S520SE-0.75K |
|---|---|
| Type | Inverter |
| Rated Power | 0.75 kW |
| Input Voltage | 200-240 V |
| Output Phase | 3-phase |
| Control Method | V/F Control |
| Frequency | 50/60 Hz |
| Protection | IP20 |
| Cooling Method | Fan cooled |
| Operating Temperature | -10 to +50°C |
| Storage Temperature | -20 to +65°C |
| Output Voltage | 0-240 V |
| Frequency Range | 0-400 Hz |
| Overload Capacity | 150% for 60 seconds |
| Protection Features | Overcurrent, Overvoltage, Undervoltage, Overheat |
| Humidity | 95% RH or less (non-condensing) |
| Altitude | 1000 m or less |
