B.9 L: Protection FunctionL parameters provide protection to the drive and motor, including control during momentary power loss, Stall Prevention,frequency detection, fault restarts, overtorque detection, and other types of hardware protection.u L1: Motor ProtectionNo.(Addr.Hex) Name Description Values PageL1-01(480) Motor Overload ProtectionSelection0: Disabled1: General purpose motor (standard fan cooled)2: Drive dedicated motor with a speed range of 1:103: Vector motor with a speed range of 1:1006: General purpose motor (50 Hz)The drive may not be able to provide protection when using multiple motors,even if overload is enabled in L1-01. Set L1-01 to 0 and install separate thermalrelays to each motor.Default: 1Range: 0 to 6 234L1-02(481) Motor Overload ProtectionTimeSets the motor thermal overload protection (oL1) time. Default: 1.0 minMin.: 0.1Max.: 5.0 236L1-03(482)Motor Overheat AlarmOperation Selection(PTC input)Sets operation when the motor temperature analog input (H3-02, H3-10, orH3-06 = E) exceeds the oH3 alarm level.0: Ramp to stop1: Coast to stop2: Fast Stop (decelerate to stop using the deceleration time in C1-09)3: Alarm only (“oH3” will flash)Default: 3Range: 0 to 3 237L1-04(483)Motor Overheat FaultOperation Selection(PTC input)Sets stopping method when the motor temperature analog input (H3-02,H3-10, or H3-06 = E) exceeds the oH4 fault level.0: Ramp to stop1: Coast to stop2: Fast Stop (decelerate to stop using the deceleration time in C1-09)Default: 1Range: 0 to 2 237L1-05(484) Motor Temperature InputFilter Time (PTC input)Adjusts the filter for the motor temperature analog input (H3-02, H3-10, orH3-06 = E). Default: 0.20 sMin.: 0.00Max.: 10.00 238L1-13(46D) Continuous ElectrothermalOperation Selection0: Disabled1: Enabled2: Enabled (RTC)Default: 1Range: 0 to 2 238u L2: Momentary Power Loss Ride-ThruNo.(Addr.Hex) Name Description Values PageL2-01(485) Momentary Power LossOperation Selection0: 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 islonger 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: 2Range: 0 to 5 240L2-02(486) Momentary Power LossRide-Thru TimeSets the Power Loss Ride-Thru time. Enabled only when L2-01 = 1 or 3. Default: <1>Min.: 0.0 sMax.: 25.5 s245L2-03(487) Momentary Power LossMinimum Baseblock TimeSets the minimum wait time for residual motor voltage decay before the driveoutput reenergizes after performing Power Loss Ride-Thru.Increasing the time set to L2-03 may help if overcurrent or overvoltage occurduring Speed Search or during DC Injection Braking.Default: <1>Min.: 0.1 sMax.: 5.0 s245L2-04(488)Momentary Power LossVoltage Recovery RampTimeSets the time for the output voltage to return to the preset V/f pattern duringSpeed Search. Default: <1>Min.: 0.0 sMax.: 5.0 s246B.9 L: Protection FunctionYASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual 463B Parameter List
