6 -1744. Use the ASR constants (C5-01 to C5-05) in their factory settings when using V/f control with PG (A1-02 = 1). Vibration may occur if these constantsare changed greatly from their factory settings.5. The torque and speed response of high-resistance (high-slip) motors are insufficient. Use appropriate adjustments to improve them. On the contrary,low-resistance (low-slip) motors are easily subject to hunting and vibration. Here too, use appropriate adjustments to improve them.6. The current during startup may increase when C4-02 (Torque compensation primary delay time constant) is increased. Check the current during star-tup while adjusting this constant. Reducing Shock during Elevating Machine Start, Stop, Acceleration, andDecelerationWhen the riding comfort during start, stop, acceleration, and deceleration is of high importance, as it is for ele-vators in which people ride, adjust the following constants.S-curve Characteristics, Acceleration/Deceleration TimesDwell Function at StartIMPORTANT1. The factory setting for C2-04 (S-curve characteristic time at deceleration end) is 0.00 second, while the fac-tory setting for all other S-curve characteristic times is 0.20 second. Make appropriate settings for theaccel/decel times and S-curve characteristic times at each point. (S-curve characteristic time = Approxi-mately 0.2 to 1.0 second)2. The accel/decel rate can be automatically switched during acceleration and deceleration by using C1-11(Accel/decel time switching frequency). (Factory setting: Disabled)Output frequency ≥ set frequency: C1-01, C1-02 accel/decel timesOutput frequency < set frequency: C1-07, C1-08 accel/decel times3. If the output frequency during the S-curve characteristic time for deceleration falls below the value set forE1-09 (Min. output frequency), the S-curve characteristic will be cancelled, and the DC injection braking(Zero-speed control) will be applied.4. Do not use the S-curve characteristic for applications where a short run time is desired, such as in cranesand hoists. (S-curve characteristic time = Approximately 0.0 to 0.2 second)C2-03C2-02(High speed)Output frequencyC2-03C2-04 C2-04C2-01Acceleration time Deceleration time(Low speed)DC injection braking when stopping(Zero-speed control for flux vector control)b6-02(Dwell time at start)0.1 to 0.3 sec(High speed)ONOFFCLOSE OPENtOutput frequencyb6-01 (Dwell frequency at start) 0.1 to 3.0 HzFrequency detection2 or During run 2Holding brakeoperation
