6 -66Continuing OperationThis section explains functions for continuing or automatically restarting Inverter operation even if anerror occurs. Restarting Automatically After Power Is RestoredEven if a temporary power loss occurs, you can restart the Inverter automatically after power is restored tocontinue motor operation.To restart the Inverter after power is restored, set L2-01 to 1 or 2.If L2-01 is set to 1, when power is restored within the time set in L2-02, the Inverter will restart. If the time setin L2-02 is exceeded, alarm UV1 (main circuit undervoltage) will be detected.If L2-01 is set to 2, when the main power supply is restored while the control power supply (i.e., power supplyto the control panel) is backed up, the Inverter will restart. Consequently, alarm UV1 (main circuit undervolt-age) will not be detected.Related ConstantsCon-stantNumberName Description SettingRangeFactorySettingChangeduringOpera-tionControl Methods MEMOBUSRegis-terV/fV/fwithPGOpenLoopVec-torFluxVec-torL2-01Momentarypower lossdetection0: Disabled [main circuitundervoltage (UV1)detection]1: Enabled [Restarted when thepower returns within thetime for L2-02. When L2-02is exceeded, main circuitundervoltage (UV1)detection.]2: Enabled while CPU isoperating. [Restarts whenpower returns during controloperations. Does not detectmain circuit undervoltage(UV1).]0 to 2 0 No A A A A 485HL2-02Momentarypower lossridethru timeRidethrough time, whenMomentary Power Loss Selec-tion (L2-01) is set to 1, in unitsof seconds.0 to 25.5 0.1 s*1 No A A A A 486HL2-03 Min. base-block timeSets the Inverter's minimumbaseblock time in units of onesecond, when the Inverter isrestarted after power loss ride-through.Sets the time to approximately0.7 times the motor secondarycircuit time constant.When an overcurrent or over-voltage occurs when starting aspeed search or DC injectionbraking, increase the set values.0.1 to5.00.2 s*1 No A A A A 487H
