Data Display and Action to be Taken when Inverter Error Occurs

    Initial Memory Error (F00)
- Description: An error occurred in the initial memory.
+ Action: Turn the power off, then on. If the problem persists, replace the Unit.

    ROM Error (F01)
- Description: An error occurred in the Read-Only Memory (ROM).
+ Action: If the problem persists, replace the Unit.

    Constant Error (F04)
- Description: An error occurred in the constant settings.
+ Action: Write down all the constant settings, initialize the constants, and reset the constants. Turn the power off, then on. If the problem persists, replace the Unit.

    Option Error (F06)
- Description: The Digital Operator has an error or faulty contact.
+ Action: Turn the power off, then reinstall the Digital Operator. If the problem persists, replace the Unit.

    Control Circuit Error (Not lit)
- Description: An error occurred in the control power supply or hardware.
+ Action: Check the power cables. Replace the Unit.

General Guidance

    The first character of an error code is always "F" when an Inverter error occurs. However, all indicators are not lit when a control circuit error occurs.
    If an Inverter error occurs, the general course of action is to turn the power off, then on. If the problem persists, the Unit may need to be replaced.

These actions are designed to reset the system and clear any transient errors. If the error persists after these steps, it indicates a more serious issue that may require replacement of the Inverter unit. Always ensure that the power is safely turned off before performing any maintenance or replacement activities.

    Main Circuit Undervoltage (UV)
+ Cause: The DC voltage of the main circuit dropped below the low-voltage detection level when the Inverter was stopped.
+ Solution: Check the power voltage, inspect the power input line for disconnection, and ensure the terminal block screws are tight.

    Main Circuit Overvoltage (OV)
+ Cause: The DC voltage of the main circuit exceeded the overvoltage detection level when the Inverter was stopped.
+ Solution: Check the power voltage.

    Inverter Overheated (OH)
+ Cause: The drive fin overheated when the Inverter was stopped.
+ Solution: Check the ambient temperature and install a cooling fan or air conditioner if necessary.

    Digital Operator Stopped (STP)
+ Cause: The STOP/RESET Key on the Digital Operator was pressed while the Inverter was being operated via communication.
+ Solution: Set the run command (bit 0 of channel n +1) to OFF (0).

    Over-torque (OL3)
+ Cause: A current exceeding the value set in n51 flowed for more than the time set in n52.
+ Solution: Check if the n51 and n52 settings are appropriate, and check the machine use status to eliminate the cause of the problem.

    Sequence Error (SEr)
+ Cause: A local/remote changeover command was input during operation.
+ Solution: Check the sequence (PC program).

    Overcurrent (OC)
+ Cause: The Inverter output current instantaneously exceeded 250% of the rated amperage.
+ Solution: Check for short circuits or grounding on the output side, excessive load inertia, or inappropriate acceleration and deceleration time settings. Adjust the settings or the load as necessary.

    Control Power Supply Fault (UV2)
+ Cause: A voltage fault occurred in the control power supply.
+ Solution: Turn the power off, then on. If the problem persists, replace the Unit.