B.8 L: Protection FunctionL parameters provide protection to the drive and motor, including control during momentary power loss, stall prevention,frequency detection, fault restarts, overtorque and undertorque detection, and other types of hardware protection.u L1: Motor ProtectionNo.(Addr.Hex)Name LCD Display Description Values PageL1-01(480) Motor OverloadProtection SelectionMtr OL Charact0: OL1 Disabled1: VT Motor4: PM Motor0: Disabled1: General purpose motor (standard fan cooled)4: PM motor with variable torque controlThe drive may not be able to provide protection when usingmultiple motors, even if overload is enabled in L1-01. Set L1-01to 0 and install separate thermal relays to each motor.Default: <1>Range: 0, 1, 4 –L1-02(481) Motor OverloadProtection Time MOL Time Const Sets the motor thermal overload protection (oL1) time. Default: 1.0 minMin.: 1.0Max.: 5.0 –L1-03(482)Motor Overheat AlarmOperation Selection(PTC input)Mtr OH Alarm Sel0 : Ramp to Stop1: Coast to Stop2: Fast-Stop3: Alarm onlySets operation when the motor temperature analog input(H3-02 or H3-10 = E) exceeds the alarm level.0: Ramp to stop1: Coast to stop2: Fast Stop (decelerate to stop using the deceleration time inC1-09)3: Alarm only (“oH3” will flash)Default: 3Range: 0 to 3 –L1-04(483)Motor Overheat FaultOperation Selection(PTC input)Mtr OH Fault Sel0 : Ramp to Stop1: Coast to Stop2: Fast-StopSets stopping method when the motor temperature analog input(H3-02, or H3-10 = E) exceeds the oH4 fault level.0: Ramp to stop1: Coast to stop2: Fast Stop (decelerate to stop using the deceleration time inC1-09)Default: 1Range: 0 to 2 –L1-05(484)Motor TemperatureInput Filter Time (PTCinput) Mtr Temp Filter Adjusts the filter for the motor temperature analog input(H3-02, or H3-10 = E). Default: 0.20 sMin.: 0.00Max.: 10.00 –L1-08(1103)<2> oL1 Current Level oL1 Current Lvl Sets the reference current for motor thermal overload detectionfor the motor in amperes.Default: <3>Min.: 10% ofdrive ratedcurrentMax.: 150% ofdrive ratedcurrent <4>–L1-13(46D)ContinuousElectrothermalOperation SelectionMtr OL Mem Sel0: Disabled1: Enabled2: Enabled(RTC)0: Disabled1: Enabled2: Enable using Real Time Clock Default: 1Range: 0 to 2 –<1> Default setting is determined by parameter A1-02, Control Method Selection.<2> Available in drive software versions PRG: 1016 and later.<3> Default setting is determined by parameters o2-04, Drive Model Selection, and C6-01, Drive Duty Selection.<4> The number of decimal places in the parameter value depends on the drive model. This value has two decimal places (0.01 A) if the drive is set fora maximum applicable motor capacity up to and including 11 kW, 2A0031, 4A0021 (input voltage 460 V or higher) or 4A0027 (input voltage lowerthan 460 V) and one decimal place (0.1 A) if the maximum applicable motor capacity is higher than 11 kW, 2A0046, 4A0027 (input voltage 460V or higher) or 4A0034 (input voltage lower than 460 V) .B.8 L: Protection Function312 YASKAWA ELECTRIC TOEP C710616 45F YASKAWA AC Drive – Z1000 User Manual
