B.3 Parameter TableYASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 495Parameter ListB L2: Momentary Power Loss Ride-ThruL1-20(445H)Operation at Motor Overheat(oH5)Determines what action the drive should take when a motor overheat fault occurs (oH5).0: Ramp to stop1: Coast to stop2: Fast Stop (decelerate to stop using the deceleration time in C1-09)3: Alarm only ("oH5" will flash)Note: This parameter is available in models CIMR-A4A0930 and 4A1200.Default: 1Min: 0Max: 3274<9> Default setting is determined by the drive model (o2-04) and duty selection (C6-01).<10> Default setting is determined by the control mode (A1-02).<19> Display is in the following units. CIMR-A2A0004 to 2A0040, CIMR-A4A0002 to 4A0023: 0.01 A units CIMR-A2A0056 to 2A0312, CIMR-A4A0031 to 4A0675: 0.1 A unitsNo. (Addr.) Name Description Setting PageL2-01(485H)<9> Default setting is determined by the drive model (o2-04) and duty selection (C6-01).<12> Setting range value is dependent on the units selected for the accel/decel time (C1-10). When C1-10 = 0 (units of 0.01 s), the setting rangebecomes 0.00 to 600.00 s.<18> Values shown here are for 200 V class drives. Double the value when using a 400 V class drive.<33> Default setting value is dependent on the setting for the input voltage (E1-01).Momentary Power Loss OperationSelection0: 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.3: KEB deceleration for the time set to L2-02.4: KEB deceleration as long as CPU has power.5: KEB deceleration to stop.Default: 0Min: 0Max: 5274L2-02(486H)Momentary Power Loss Ride-ThruTime Sets the Power Loss Ride-Thru time. Enabled only when L2-01 = 1 or 3.Default: <9>Min: 0.0 sMax: 25.5 s279L2-03(487H)Momentary Power Loss MinimumBaseblock TimeSets the minimum wait time for residual motor voltage decay before the drive outputreenergizes after performing Power Loss Ride-Thru.Increasing the time set to L2-03 may help if overcurrent or overvoltage occur during SpeedSearch or during DC Injection Braking.Default: <9>Min: 0.1 sMax: 5.0 s279L2-04(488H)Momentary Power Loss VoltageRecovery Ramp TimeSets the time for the output voltage to return to the preset V/f pattern during Speed Search.Default: <9>Min: 0.0 sMax: 5.0 s279L2-05(489H)Undervoltage Detection Level(Uv) Sets the DC bus undervoltage trip level.Default: <18> <33>Min: 150 VdcMax: 210 Vdc <18>280L2-06(48AH) KEB Deceleration TimeSets the time required to decelerate from the speed when KEB was activated to zero speed.Default: 0.00 sMin: 0.00 sMax: 6000.0 s <12>280L2-07(48BH) KEB Acceleration Time Sets the time to accelerate to the frequency reference when momentary power loss is over. If setto 0.0, the active acceleration time (C1-01, C1-03, C1-05, or C1-07) is used.Default: 0.00 sMin: 0.00 sMax: 6000.0 s <12>280L2-08(48CH) Frequency Gain at KEB Start Sets the percentage of output frequency reduction at the beginning of deceleration when theKEB Ride-Thru function is started.Reduction = (slip frequency before KEB) L2-08/100 2Default: 100%Min: 0%Max: 300%280L2-10(48EH)KEB Detection Time (MinimumKEB Time) Sets the time to perform KEB Ride-Thru.Default: 50 msMin: 0 msMax: 2000 ms280L2-11(461H)DC Bus Voltage Setpoint duringKEB Sets the desired value of the DC bus voltage during KEB Ride-Thru.Default: <18> <33>Min: 150 VdcMax: 400 Vdc <18>280L2-29(475H) KEB Method Selection 0: Single Drive KEB Ride-Thru 11: Single Drive KEB Ride-Thru 22: System KEB Ride-Thru 13: System KEB Ride-Thru 2Default: 0Min: 0Max: 3281No. (Addr.) Name Description Setting PageAll ModesAll ModesAll ModesAll ModesOLV/PM AOLV/PMCLVV/f w/PGCLV/PMV/f OLVAll ModesAll ModesAll ModesOLV/PM AOLV/PMCLVV/f w/PGCLV/PMV/f OLVAll ModesAll ModesAll Modes
