User Notification codes appear in the top right corner of the Frequency Command screen while the associated function is active. User Notification codes inform the user about active functions that are usually momentary under normal conditions and are only visible during the activation period. These notification events are not error conditions and only convey active system functions to the user.

    Atn Autotune active: Indicates that the Autotune function is active. If the initial Autotune fails for any reason, an automatic retry is initiated if "Other" is selected in F413. Atn2 indicates that an Autotune retry is active.
    dbOn DC Braking: This code indicates that the DC Injection function is being carried out. The display shows "db" during braking and "dbOn" when the motor shaft stationary function is being carried out.

Trip/Error Codes

A "Trip" is an ASD response to a Fault (though Fault and Trip are sometimes used interchangeably). A Trip is a safety feature that disables the ASD system if a subsystem of the ASD malfunctions.

Trip/Error Codes and Possible Causes

ASD Overload

- Acceleration time is too short.
- DC Injection current is too high.
- V/f setting needs adjustment.
- Motor running during restart.
- ASD or motor improperly matched to the application.
    Solutions:
- Extend the acceleration time.
- Reduce the DC Injection current.
- Check and adjust V/f settings as needed.
- Ensure the motor is stopped before restarting.
- Verify that the ASD and motor are properly matched to the application.

Autotune Error

    Causes:
- Autotune readings inconsistent with configuration information.
- Non-3-phase motor is being used.
- Incorrect settings in F400, F413, or F414.
- Motor significantly smaller than the ASD capacity.
- ASD output cabling is too small, too long, or housed with other cables producing EMF interference.
- Motor running during the Autotune function.
    Solutions:
- Check Autotune readings and ensure consistency with configuration.
- Use an appropriate 3-phase motor.
- Verify and correct settings in F400, F413, and F414.
- Use a motor suitable for the ASD capacity.
- Review cable size and layout, and reduce EMF interference.
- Ensure the motor is stopped during the Autotune process.

Communication Error

    Causes:
- Communication malfunction.
- Improper or loose connection.
- Incorrect system settings.
    Solutions:
- Check communication connections and ensure they are secure.
- Verify proper connections and ensure they are not loose.
- Review and correct system settings as needed.

CPU Fault

    Cause:
- CPU malfunction.
    Solution:
- Ensure the CPU is functioning correctly. Seek technical support or replace the CPU if necessary.

DC Bus Undervoltage

- Low 3-phase input voltage.
- Defective control board.
- Excessive load on the power supply.
- Undervoltage/Ridethrough settings require adjustment.
    Solutions:
- Check and increase the 3-phase input voltage as needed.
- Inspect the control board and replace it if necessary.
- Reduce the load on the power supply.
- Verify and adjust undervoltage/Ridethrough settings.

CM1 Comm1 Error: Internal Communication Error

- Improperly programmed ASD.
- Improper communication settings.
- Improperly connected cables.
    Solutions:
- Ensure the ASD is correctly programmed.
- Check the communication settings.
- Verify that the cables are properly connected.

CM2 Comm2 Error: External Communication Error

- External communication error.
    Solutions:
- Check external communication connections, particularly ports like RS485.

EMG Emergency Off: Output signal from the ASD is terminated, and a brake may be applied.

- Stop|Reset pressed twice at the EOI.
- EOFF command received remotely.
- ASD needs to be reset.
    Solutions:
- Check EOI settings.
- Review remote commands.
- Reset the ASD.

MOFF Main Undervoltage: Low voltage condition at the 3-phase AC input.

- Low 3-phase utility voltage.
    Solutions:
- Check and stabilize the utility voltage.

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