Output FrequencyC1-11Accel/Decel TimeSwitch FrequencyC1-03settingWhen the output frequency C1-11, drive uses Accel/Decel Time 1 (C1-01, -02)When the output frequency < C1-11, drive uses Accel/Decel Time 2 (C1-03, -04)C1-01settingC1-02settingC1-04settingC1-03 = (accel time from 0 Hz to C1-11) × (E1-04)C1-11C1-01 = (accel time between C1-11 and E1-04) × (E1-04)(E1-04 - C1-11)C1-02 = (decel time between E1-04 and C1-11) × (E1-04)(E1-04 - C1-11)C1-04 = (decel time from C1-11 to 0 Hz) × (E1-04)C1-11Figure 1.20 Accel/Decel Time Switching Frequencyn C1-11: Accel/Decel Time Switching FrequencySets the frequency at which the drive switches between accel/decel time settings. Refer to Switching Accel/Decel Times bya Frequency Level on page 51 for details.No. Parameter Name Setting Range DefaultC1-11 Accel/Decel Time Switching Frequency 0.0 to 240.0 Hz 0.0 HzNote: Setting C1-11 to 0.0 disables this function.n C1-09: Fast Stop TimeSets a special deceleration used when a select group of faults occur or when closing a digital input configured as H1-oo =15 (N.O. input) or 17 (N.C. input). A momentary closure of the digital input will trigger the Fast Stop operation; it does nothave to be closed continuously.The drive cannot be restarted after initiating a Fast Stop operation until after completing deceleration, clearing the Fast Stopinput, and cycling the Run command.A digital output programmed for “During Fast Stop” (H2-oo = 4C) will be closed as long as Fast Stop is active.No. Parameter Name Setting Range DefaultC1-09 Fast Stop Time 0.1 to 6000.0 s 10.0 sNOTICE: Rapid deceleration can trigger an overvoltage fault. The drive output shuts off when faulted and the motor coasts. Set anappropriate Fast Stop time to C1-09 to avoid this uncontrolled motor state and to ensure that the motor stops quickly and safely.u C2: S-Curve CharacteristicsUse S-curve characteristics to smooth acceleration and deceleration and minimize abrupt shock to the load. Set S-curvecharacteristic time during acceleration/deceleration at start and acceleration/deceleration at stop. Increase the value set toC2-01 if the STo fault (Step Out Detection) occurs when starting a PM motor.n C2-01 and C2-02: S-Curve CharacteristicsC2-01 and C2-02 set separate S-curves for each section of the acceleration or deceleration.No. Parameter Name Setting Range DefaultC2-01 S-Curve Characteristic at Accel Start 0.00 to 10.00 sDetermined byA1-02C2-02 S-Curve Characteristic at Accel End 0.20 sFigure 1.21 illustrates S-curve application.1.3 C: Tuning52 YASKAWA SIEP YAIZ1U 03B YASKAWA AC Drive – Z1000 Programming Manual
