Parameter Details1111.4 C: TuningYASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual 647• C1-01 to C1-09• L2-06• L2-071 : 0.1 s unitsThe acceleration and deceleration times are set in 0.1 s units. The setting range is 0.0 to 6000.0 s.■ C1-11: Accel/Decel Time Switchover FreqNo.(Hex.) Name Description Default(Range)C1-11(020A)Accel/Decel TimeSwitchover Freq Sets the frequency at which acceleration and deceleration times areautomatically changed.Determined by A1-02(0.0 - 590.0 Hz)The acceleration and deceleration times for the drive are switched automatically when output frequency reachesthe setting value set to C1-11. Setting C1-11 = 0.0 Hz (0.0%) disables this function.Figure 11.46 Accel/Decel Time Switchover FreqThe following table lists the possible combinations of acceleration and deceleration time switchover frequenciesand the acceleration times when using the Motor 2 Selection function.Table 11.28 Motor and Acceleration and Deceleration Time CombinationC1-11 Motor 1 Motor 2Acceleration Time Deceleration Time Acceleration Time Deceleration TimeLess than the setting value C1-07 [Acceleration Time4] C1-08 [Deceleration Time4] C1-07 [Acceleration Time4] C1-08 [Deceleration Time4]At least the setting value C1-01 [Acceleration Time1]C1-02 [Deceleration Time1]C1-05 [Acceleration Time3]C1-06 [Deceleration Time3]◆ C2: S-Curve CharacteristicsUse S-curve characteristics to smooth acceleration and deceleration and to minimize abrupt shock to the load.Set S-curve characteristic time during acceleration/deceleration at start and acceleration/deceleration at stop.The following figure explains how S-curves are applied.Figure 11.47 S-Curve Timing Diagram - Forward/Reverse OperationNote:• If STPo [Pull-Out Detection] occurs when starting a PM motor, try increasing the value set to C2-01.• Setting the S-curve will increase the acceleration and deceleration times.V/f CL-V/f OLV CLV AOLV OLV/PMOLV/PM AOLV/PM CLV/PM EZOLV
