No. Name Setting Range DefaultL5-04 Fault Reset Interval Time 0.5 to 600.0 s 10.0 sn L5-05: Fault Reset Operation SelectionNo. Name Setting Range DefaultL5-05 Fault Reset Operation Selection 0, 1 1Setting 0: Count Successful RestartsThe drive will continuously attempt to restart. If it restarts successfully, the restart counter is increased. This operation isrepeated each time a fault occurs until the counter reaches the value set to L5-01.Setting 1: Count Restart AttemptsThe drive will attempt to restart using the time interval set to parameter L5-04. A record is kept of the number of attempts torestart to the drive, regardless of whether those attempts were successful. When the number of attempted restarts exceeds thevalue set to L5-01, the drive stops attempting to restart.u L6: Torque DetectionThe drive provides two independent torque detection functions that trigger an alarm or fault signal when the load is too heavy(oL), or suddenly drops (UL). These functions are set up using the L6-oo parameters. Program the digital outputs as shownbelow to indicate the underload or overload condition to an external device:Note: When overtorque occurs in the application, the drive may stop due to overcurrent (oC) or overload (oL1). To prevent the drive from stopping,use torque detection to indicate an overload situation to the controller before oC or oL1 occur. Use undertorque detection to discoverapplication problems like a torn belt, a pump shutting off, or other similar trouble.H2-01, H2-02, H2-03Setting DescriptionB Torque detection 1, N.O. (output closes when overload or underload is detected)17 Torque detection 1, N.C. (output opens when overload or underload is detected)18 Torque detection 2, N.O. (output closes when overload or underload is detected)19 Torque detection 2, N.C. (output opens when overload or underload is detected)Figure 1.68 and Figure 1.69 illustrate the functions of overtorque and undertorque detection.Motor current / torqueL6-0210 % hysteresisTorque detection 1 (NO)orTorque detection 2 (NO)L6-03ONL6-0310 % hysteresisONFigure 1.68 Overtorque Detection OperationMotor current / torqueL6-0210 % hysteresisTorque detection 1 (NO)orTorque detection 2 (NO)L6-03ONL6-03ONFigure 1.69 Undertorque Detection OperationNote: 1. The torque detection function uses a hysteresis of 10% of the drive rated output current and motor rated torque.2. The level is set as a percentage of the drive rated output current.1.8 L: Protection Functions114 YASKAWA SIEP YAIZ1U 03B YASKAWA AC Drive – Z1000 Programming Manual
