Use S Curve parameters where a smooth acceleration or deceleration action is required, this will prevent possible damage caused to machines by sudden acceleration/deceleration. Four parameters can be selected as shown on the diagram below:
Figure 4-28 S-Curve Characteristics
Note: a. Regardless of the stall prevention period, actual acceleration and deceleration time =preset acceleration / deceleration time + S curve time. b. Please set the S curve time separately in the parameter (10-07~10-10) c. When S curve time (10-07~10-10) is set as 0, the S curve function is disabled. d. Note : The calculating of S curve time is based on the rated frequency of motor (06-04), Please refer to the parameter (00-09/00-10). 10-11 : Skip frequency 1(Hz) = 0.00 ~ 400.00 10-12 : Skip frequency 2(Hz) = 0.00 ~ 400.00 10-13 : Skip frequency 3(Hz) = 0.00 ~ 400.00 10-14 : Skip frequency range (± Hz) = 0.00 ~ 30.00 Skip frequency parameters can be used to avoid mechanical resonance in certain applications. Example:10-1=10.00(Hz); 10-12=20.00(Hz); 10-13=30.00(Hz); 10-14=2.00(Hz). 10Hz ±2Hz=8~12Hz 20Hz ±2Hz=18~22Hz Skip frequency 30Hz ±2Hz=28~32Hz
10-14 10-13 10-12 10-11 10-15 : Carrier Frequency reduced by temperature raising =0 : disable =1 : Enable When inverter is temperature overrun 80°C on keypad display(11-00=01000), Carrier Frequency reduced 4K.when inverter is temperature reduced less than 70°C, Carrier Frequency resume.
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