u L2: Momentary Power Loss Ride-ThruNo.(Addr.Hex) Name LCD Display Description Values PageL2-01(485) Momentary Power LossOperation SelectionPwrL Selection0: Disabled1: Enbl with Timer2: Enbl whl CPU act0: Disabled.Drive trips on Uv1 fault when power is lost.1: Recover within the time set in L2-02.Uv1 will be detected if power loss is longer than L2-02.2: Recover as long as CPU has power.Uv1 is not detected.Default: 2 <4>Range: 0 to 2 138L2-02(486) Momentary Power LossRide-Thru Time PwrL Ridethru tSets the Power Loss Ride-Thru time. Enabled only whenL2-01 = 1 or 3. Default: <1>Min.: 0.0 sMax.: 25.5 s138L2-03(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 RampTimePwrL 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: 190 Vdc<2> <3>Min.: 150 VdcMax.: 220 Vdc<3>–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: <2>[E1-01] × 1.22Min.: 150 VdcMax.: 400 Vdc<3>–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.<3> Values shown are specific to 200 V class drives. Double the value for 400 V class drives.<4> Default is 0 in drive software versions PRG: 1017 and earlier.B.8 L: Protection FunctionYASKAWA ELECTRIC TOEP C710616 45F YASKAWA AC Drive – Z1000 User Manual 313B Parameter List
