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11.10 n: Special Adjustment874 YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual11.10 n: Special Adjustmentn parameters are used to set the following functions.• Hunting prevention function• High-slip braking• Motor line-to-line resistance online tuning• Fine tune the parameters that adjust motor control◆ n1: Hunting Prevention FunctionHunting Prevention prevents the drive from hunting as a result of low inertia or operating with light load. Huntingoften occurs with a high carrier frequency and an output frequency below 30 Hz.■ n1-01: Hunting Prevention SelectionNo.(Hex.) Name Description Default(Range)n1-01(0580)Hunting PreventionSelection Enables or disables the hunting prevention function.1(0 - 2)Disable this function to prioritize responsiveness over motor vibration reduction.If hunting occurs, or when a high carrier frequency or SwingPWM is being used, greater suppression of huntingcan be obtained by selecting n1-01 = 2.0 : Disabled1 : Enabled2 : Enable (High carry)■ n1-02 Hunting Prevention Gain SettingNo.(Hex.) Name Description Default Setting(Range)n1-02(0581)Hunting PreventionGain Setting Adjusts the behavior of the hunting prevention function. Normally there isno need to configure this setting.1.00(0.00 - 2.50)Adjust this parameter in the following circumstances.• With settings of n1-01 = 1, 2 [Hunting Prevention Selection = Enabled, Enable (High carry)]: If oscillationoccurs when operating a motor with a light load, increase the setting value in increments of 0.1.• With settings of n1-01 = 1, 2, if the motor stalls: Reduce the setting value in increments of 0.1.■ n1-03: Hunting Prevention Time ConstantNo.(Hex.) Name Description Default Setting(Range)n1-03(0582)Hunting PreventionTime Constant Adjusts the responsiveness (primary delay time constant) of the huntingprevention function. Normally there is no need to configure this setting.Determined by o2-04(0 - 500 ms)Adjust this parameter in the following circumstances.• Load inertia is great: Increase the setting value. However, response will be slower if the setting value is toohigh. Also, since the frequency is low, oscillation will occur.• Oscillation occurs at low frequencies: Reduce the setting value.■ n1-05: HuntingPreventionGain whileinRevNo.(Hex.) Name Description Default Setting(Range)n1-05(0530)HuntingPreventionGain whileinRev Adjusts the behavior of the hunting prevention function. Used to adjustReverse run. Normally there is no need to configure this setting.0.00(0.00 - 2.50)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 EZOLVV/f CL-V/f OLV CLV AOLV OLV/PMOLV/PM AOLV/PM CLV/PM EZOLV