n L4-06: Frequency Reference at Reference LossSets the frequency reference level at which the drive runs when L4-05 = 1 and when detecting a reference loss. The value isset as a percentage of the frequency reference before the loss was detected.No. Name Setting Range DefaultL4-06 Frequency Reference at Reference Loss 0.0 to 100.0% 80.0%n L4-07: Speed Agree Detection SelectionDetermines when frequency detection is active using parameters L4-01 through L4-04.No. Name Setting Range DefaultL4-07 Speed Agree Detection Selection 0, 1 0Setting 0: No Detection during baseblockSetting 1: Detection always enabledu L5: Fault RestartAfter a fault has occurred, Fault Restart attempts to automatically restart the motor and continue operation instead of stopping.The drive can perform a self-diagnostic check and resume the operation after a fault has occurred. If the self-check is successfuland the cause of the fault has disappeared, the drive restarts by first performing Speed Search (Refer to b3: Speed Search onpage 153 for details).Note: 1. The wiring sequence should remove the Forward/Reverse command when a fault is triggered and output is shut off.2. When the Forward/Reverse command is removed, the drive can perform a self-diagnostic check and attempt to restart the faultautomatically.WARNING! Sudden Movement Hazard. Do not use the fault restart function in lifting applications. Fault restart may cause the machine todrop the load, which could result in death or serious injury.The drive can attempt to restart itself following the faults listed below.Fault Name Fault NameGF Ground Fault oL4 Overtorque 2LF Output Open Phase ov DC Bus OvervoltageoC Overcurrent PF Input Phase LossoH1 Drive Overheat rH Braking Resistor FaultoL1 Motor Overload rr Braking Transistor FaultoL2 Drive Overload Uv1 DC Bus Undervoltage <1>oL3 Overtorque 1<1> When L2-01 is set to 1 through 4 (continue operation during momentary power loss)Use parameters L5-01 to L5-05 to set up automatic fault restart.Set H2-01, H2-02, or H2-03 to 1E. to output a signal during fault restart.n L5-01: Number of Auto Restart AttemptsSets the number of times that the drive may attempt to restart itself.Parameter L5-05 determines the method of incrementing the restart counter. When the counter reaches the number set to L5-01,the operation stops and the fault must be manually cleared and reset.The restart counter is incremented at each restart attempt, regardless of whether the attempt was successful. When the counterreaches the number set to L5-01, the operation stops and the fault must be manually cleared and reset.The number of fault restarts is reset to zero when:• The drive operates normally for 10 minutes following a fault restart.• A fault is cleared manually after protective functions are triggered.• The power supply is cycled.No. Name Setting Range DefaultL5-01 Number of Auto Restart Attempts 0 to 10 Times 0 Times5.8 L: Protection Functions254 YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
