No.(Addr.Hex) Name LCD Display Description Values PageL2-03(487)Momentary Power LossMinimum BaseblockTime PwrL Baseblock tSets the minimum wait time for residual motor voltage decaybefore the drive output reenergizes after performing PowerLoss Ride-Thru.Increasing the time set to L2-03 may help if overcurrent orovervoltage occur during Speed Search or during DC InjectionBraking.Default: <1>Min.: 0.1 sMax.: 5.0 s–L2-04(488)Momentary Power LossVoltage Recovery RampTime PwrL V/F Ramp tSets the time for the output voltage to return to the preset V/fpattern during Speed Search. Default: <1>Min.: 0.0 sMax.: 5.0 s–L2-05(489) Undervoltage DetectionLevel (Uv1) PUV Det LevelSets the DC bus undervoltage trip level. Default: 546.3Vdc <2>Min.: 431.3Max.: 603.8–L2-06(48A) KEB DecelerationTime KEB Decel Time Sets the time required to decelerate from the speed when KEBwas activated to zero speed. Default: 0.00 sMin.: 0.00Max.: 6000.0 –L2-07(48B) KEB AccelerationTime KEB Accel Time Sets the time to accelerate to the frequency reference whenmomentary power loss is over. If set to 0.0, the activeacceleration time is used.Default: 0.00 sMin.: 0.00Max.: 6000.0 –L2-08(48C) Frequency Gain at KEBStart KEB Freq RedSets the percentage of output frequency reduction at thebeginning of deceleration when the KEB Ride-Thru function isstarted.Reduction = (slip frequency before KEB) × L2-08 × 2Default: 100%Min.: 0Max.: 300 –L2-10(48E) KEB Detection Time(Minimum KEB Time) KEB Detect Time Sets the time to perform KEB Ride-Thru. Default: 50 msMin.: 0Max.: 2000 –L2-11(461) DC Bus VoltageSetpoint during KEB KEB DC Bus LevelSets the desired value of the DC bus voltage during KEB Ride-Thru. Default:[E1-01]× 1.22Min.: 431.3 VdcMax.: 1150 Vdc–L2-29(475) KEB Method Selection KEB Mode Sel0: Single Mode KEB11: Single Mode KEB20: Single Drive KEB Ride-Thru 11: Single Drive KEB Ride-Thru 2 Default: 0Range: 0, 1 –<1> Default setting is dependent on parameter o2-04, Drive Model Selection.<2> Default setting is dependent on parameter E1-01, Input voltage Setting.u L3: Stall PreventionNo.(Addr.Hex) Name LCD Display Description Values PageL3-01(48F)Stall PreventionSelection duringAccelerationStallP Accel Sel0: Disabled1: General purpose2: Intelligent0: Disabled.1: General purpose. Acceleration is paused as long as thecurrent is above the L3-02 setting.2: Intelligent. Accelerate in the shortest possible time withoutexceeding the L3-02 level.Note: Setting 2 is not available when using OLV/PM.Default: 1Range: 0 to 2 –L3-02(490) Stall Prevention Levelduring Acceleration StallP Accel LvlUsed when L3-01 = 1 or 2. 100% is equal to the drive ratedcurrent. Default: <1>Min.: 0%Max.: 150% <1>–L3-03(491) Stall Prevention Limitduring Acceleration StallPAcc LowLim Sets Stall Prevention lower limit during acceleration whenoperating in the constant power range. Set as a percentage ofdrive rated current.Default: 50%Min.: 0Max.: 100 –L3-04(492)Stall PreventionSelection duringDecelerationStallP Decel Sel0: Disabled1: General purpose2: Intelligent4: High Flux Brake5: High Flux Brake20: Disabled. Deceleration at the active deceleration rate. An ovfault may occur.1: General purpose. Deceleration is paused when the DC busvoltage exceeds the Stall Prevention level.2: Intelligent. Decelerate as fast as possible while avoiding ovfaults.4: Overexcitation Deceleration. Decelerates while increasingthe motor flux5: Overexcitation Deceleration 2. Adjust the deceleration rateaccording to the DC bus voltage.Default: 1Range: 0 to 2; 4,5 <2> –B.8 L: Protection FunctionYASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual 299B Parameter List
