Parameter Details1111.4 C: TuningYASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual 651Note:Confirm that the following parameters are correctly set before changing the slip compensation gain. If E3-01 = 2 [Motor 2 ControlMode Selection = Open Loop Vector Control] is set, E4-02 [Motor 2 Rated Slip] can be set by Auto-Tuning.• E4-01 [Motor 2 Rated Current]• E4-02 [Motor 2 Rated Slip]• E4-03 [Motor 2 Rated No-Load Current]Adjustment may help in the following situations:• If the motor speed is slower than the frequency reference, increase C3-01 by 0.1.• If the motor at constant speed is faster than the frequency reference, decrease C3-01 by 0.1.■ C3-22: Motor 2 Slip Comp DelayTimeNo.(Hex.) Name Description Default(Range)C3-22(0241)RUNMotor 2 Slip CompDelayTime Adjusts the slip compensation delay time for motor 2 when speed isunstable or when the slip compensation response is too slow. Normallythere is no need to change this setting.Determined by E3-01(0 - 10000 ms)Adjustment may help in the following situations:• Increase this setting when speed is unstable.• Decrease the setting when the slip compensation response is too slow.■ C3-23: Motor 2 Slip Compensation LimitNo.(Hex.) Name Description Default(Range)C3-23(0242)RUNMotor 2 SlipCompensation Limit Sets the upper limit for the slip compensation function as a percentage ofthe motor 2 rated slip.200%(0 - 250%)This parameter is used when the motor speed is low despite increasing the setting value of C3-21 [Motor 2 SlipCompensation Gain]. The slip may have reached the upper limit of slip compensation. Adjust this parameterwhile measuring the motor speed after increasing the value set to C3-23. Set this parameter so that the combinedvalue of the frequency reference and the slip compensation limit does not exceed the machine’s allowable range.The slip compensation limit is constant in the constant torque range (frequency reference ≤ E3-06 [Motor 2 BaseFrequency]). In the constant power range the frequency reference > E3-06 increases based on C3-23 and theoutput frequency as shown in the following figure.Figure 11.49 Motor 2 Slip Compensation Limit■ C3-24: Motor 2 Slip Comp @ Regen SelectNo.(Hex.) Name Description Default(Range)C3-24(0243)RUNMotor 2 Slip Comp@ Regen Select Enables or disables slip compensation for motor 2 during regenerativeoperation.0(0 - 2)When slip compensation during regeneration has been activated and a regenerative load is applied, it might benecessary to use a dynamic braking option (braking resistor or braking resistor unit).0 : DisabledV/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
