Trip Information and Advisory
Trip

A trip event automatically turns off the inverter's output to protect the inverter and connected equipment. This safety feature prevents potential damage. If configured, a failure signal is emitted from the designated output terminal (default: terminal [FL]).
Alarm

An alarm signals a potential risk of damage if operation continues. Alarms, such as undervoltage, are indicated by blinking lights on the operation panel, and output signals can be configured for such events.
Pre-Alarm

A pre-alarm warns of conditions nearing the trip threshold. Signals can be configured to alert you of these conditions. Specific alarms include "Overcurrent alarm," "Overvoltage alarm," "Motor/Inverter overload alarm," and "Overheat alarm", which appear on the operation panel.
Message

Messages provide information about the inverter's status or setting errors but are not alarms.
Specific Trip Codes and Solutions
Pre-Alarm Information and Solutions

Overcurrent Alarm

    Cause: Current flows at or above the overcurrent stall prevention level.
    Advice: Take corrective actions like adjusting load, checking connections, and modifying settings, similar to overcurrent issues "OC1," "OC2," and "OC3."

Overheat Alarm

    Causes:
> Cause: The overheat protection pre-alarm level is reached.
> Cause: The PTC detection temperature reaches the PTC pre-alarm level.
    Advice: Ensure proper ventilation and cooling fan function, inspect for heat sources, and follow measures for issues "OH" and PTC failure "E-32."

Motor Overload Alarm / Inverter Overload Alarm

    Causes:
> Cause: Cumulative overload reaches 50% or more of the overload trip value.
> Cause: Main circuit element temperature reaches the overload pre-alarm level.
    Advice: Adjust load, check motor parameters, and ensure the inverter operates within capacity, similar to "OL1," "OL2," and "OL3."

Overvoltage Alarm

    Causes:
> Cause: Voltage reaches or exceeds the overvoltage stall prevention level.
> Cause: Sharp voltage increase occurs even below the prevention level.
    Advice: Monitor input voltage stability, install AC reactors, and ensure correct power system configuration, like issues "OP1," "OP2," and "OP3."

How to Reset a Trip

    Panel Operation
> Cause: Press the [STOP/RESET] key when a trip occurs.
> Cause: "CLr" will blink on the display. Press [STOP/RESET] again to reset the trip.

    Terminal Input (External Signal)
> Cause: Short terminal [RES] and then open it to reset. "8: Reset 1" is the default setting for terminal [RES].

    Communication
> Cause: Refer to the "RS485 Communication Function Instruction Manual" for resetting via communication.

    Turning Off Power
> Cause: Turn the power OFF and ON again. To retain trip data after power off, set <F602: Trip record retention> to "1: Retain at power off."

When the Inverter Cannot Be Reset Immediately After a Trip

    Overload Trips: A virtual cooling time is required before reset for inverter overload "OL1," motor overload "OL2," and braking resistor overload "OLr":
> Cause: "OL1": 30 seconds
> Cause: "OL2": 120 seconds
> Cause: "OLr": 20 seconds
    Note: No cooling time is required for IGBT overload "OL3."