Parameter Details1111.9 L: Protection FunctionYASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual 861Mechanical weakening is detected when the speed (absolute value) is more than or equal to the value set in L6-09.oL5 is output after detection, and operation stops.5 : Alm SpdMechanical weakening is detected when the speed (signed) is less than or equal to the value set in L6-09. UL5[Mechanical Weakening Detection 2] is output, but operation continues after detection.6 : Alm [Spd]Mechanical weakening is detected when the speed (absolute value) is less than or equal to the value set in L6-09.UL5 is output, but operation continues after detection.7 : Flt SpdMechanical weakening is detected when the speed (signed) is less than or equal to the value set in L6-09. UL5 isoutput after detection, and operation stops.8 : Flt [Spd]Mechanical weakening is detected when the speed (absolute value) is less than or equal to the value set in L6-09.UL5 is output after detection, and operation stops.■ L6-09: MechanicalWeakeningDetectSpdLvlNo.(Hex.) Name Description Default Setting(Range)L6-09(0469)MechanicalWeakeningDetectSpdLvl On the basis that E1-04 [Maximum Output Frequency] is the 100% value,this parameter sets the speed level at which the mechanical deteriorationdetection function operated as a percentage.110.0%(-110.0 - 110.0%)Overtorque/undertorque detection criteria is set in L6-01 to L6-03 [Torque Detection 1 Settings Parameters].The setting value of L6-09 is recognized as the absolute value when L6-08 = 2, 4, 6, 8 [Mechanical WeakeningDetect Ope = Speed : unsigned]. This value is processed as a positive number even if L6-09 is set to a negativenumber.■ L6-10: Mechanical Weakening Detect TimeNo.(Hex.) Name Description Default Setting(Range)L6-10(046A)MechanicalWeakening DetectTime Sets the time for mechanical deterioration detection.0.1 s(0.0 - 10.0 s)Detects mechanical weakening when the detection criteria selected with L6-08 [Mechanical Weakening DetectOpe] continues for at least the time set in L6-10.■ L6-11: MechanicalWeakeningDetectSrtTimeNo.(Hex.) Name Description Default Setting(Range)L6-11(046B)MechanicalWeakeningDetectSrtTime Sets the time at which mechanical deterioration detection is started using thecumulative operation time of the drive as a trigger.0 h(0 - 65535 h)The mechanical weakening detection function executes when the cumulative operation time of the drive exceedsthe value set in L6-11. The drive cumulative operation time can be monitored by U4-01 [Cumulative Ope Time].◆ L7: Torque LimitThe torque limit function limits torque generated by the motor to a constant amount by limiting the internal torquereference for the drive. This function is used to keep torque applied to loads and the generation of regenerativetorque below a specific amount. This function protects machinery and improves reliability of continuousoperation. Torque limits can be set individually for the four quadrants, which include torque direction (motoring/regeneration) and direction of motor rotation (forward/reverse). When the torque reference value reaches the settorque limit, the MFDO terminal set for During Torque Limit [H2-xx = 30] turns ON.V/f CL-V/f OLV CLV AOLV OLV/PMOLV/PM AOLV/PM CLV/PM EZOLVV/f CL-V/f OLV CLV AOLV OLV/PMOLV/PM AOLV/PM CLV/PM EZOLVV/f CL-V/f OLV CLV AOLV OLV/PMOLV/PM AOLV/PM CLV/PM EZOLV
