R
Rachel WilliamsAug 17, 2025
Why Mitsubishi Electric FR-S520SE motor current is large?
- CChristopher MartinAug 17, 2025
If the motor current is large, verify that the load isn't too heavy and that the torque boost setting isn't excessively high.
To Next PageTo Next PageWhy Mitsubishi Electric FR-S520SE 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.
What to do if Mitsubishi Electric FR-S520SE 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 Mitsubishi Electric FR-S520SE 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).
How to fix Mitsubishi Electric Inverter motor remains stopped?
To address a motor that remains stopped: * Ensure the motor is properly connected. * Verify the main circuit display is provided. * Confirm the jumper across P-P1 is connected. * Check the start signal is input and the frequency setting signal is not zero. * Ensure the operation mode (Pr. 79) setting is correct and the starting frequency (Pr. 13) setting is not greater than the running frequency. * Check that the load is not too heavy and the shaft is not locked.
What causes Mitsubishi Electric FR-S520SE acceleration/deceleration is not smooth?
If the acceleration or deceleration is not smooth, check that the acceleration and deceleration time setting is correct, the load is not too heavy and the torque boost setting is not too large.
Why Mitsubishi Electric Inverter motor rotates in opposite direction?
If the motor rotates in the opposite direction, check that the phase sequence of output terminals is correct, the start signals (forward rotation, reverse rotation) are setup properly, and the setting of Pr. 17 "RUN key rotation direction".
Why Mitsubishi Electric FR-S520SE 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.
What to do if Mitsubishi Electric FR-S520SE operation mode is not changed properly?
If the operation mode is not changed properly, verify that the STF or STR signal is off and check the Pr. 79 setting.
How to solve Mitsubishi Electric FR-S520SE Inverter parameter write cannot be performed?
If a parameter write cannot be performed, make sure that operation is not being performed (signaled), check that the SET (WRITE) was pressed, and ensure that you are not attempting to set the parameter range or the operation mode.
What to check if Mitsubishi Electric FR-S520SE Inverter motor produces annoying sound?
If the motor produces an annoying sound, check the Pr. 70 "Soft-PWM setting" and Pr. settings.
General| Series | FR-S520SE |
|---|---|
| Type | Inverter |
| Control Method | V/F control |
| Cooling Method | Fan cooled |
| Input Voltage | 200-240V AC |
| Output Voltage | 3-Phase 200-240 VAC |
| Overload Capacity | 150% for 60 seconds |
| Protection Functions | Overcurrent, Overvoltage, Undervoltage, Overheat, Short Circuit |
| Ambient Temperature | -10°C to +50°C |
| Enclosure | IP20 |
| Operating Temperature | Refer to Ambient Temperature |
| Storage Temperature | -20°C to +65°C |
| Vibration | 5.9 m/s² or less |
Provides diagrams for standard wiring and explains terminal specifications for main and control circuits.
Details the layout and function of main circuit terminals for power input and output.
Discusses methods to ensure system safety and prevent accidents when the inverter fails.
Provides detailed explanations for various inverter functions and parameter settings.
Allows customization of input and output terminal functions via parameter settings.
Covers various operation modes, retry functions, and PWM settings for inverter control.
Lists and explains various error codes, major failures, minor failures, and warnings.
Provides a guide to diagnose and resolve common issues like motor not starting or speed differences.
Outlines essential safety precautions and procedures for maintaining the inverter.
