Digital Brushless AC Servo Drive system - Ref. 1809 BCSD-65/116
4.4.3. Adjusting Reference Offset
Note:
Please see content of 5.2.4 and 5.2.5.
4.4.4. Soft Start
The soft start function converts the stepwise speed reference inside the servodrive to a consistent rate
of acceleration and deceleration.
Pn310 can be used to select the soft start form:
0: Slope; 1: S curve; 2: 1st-order filter; 3: 2nd-order filter
When Pn310=0 parameters Pn306 and Pn307 have not sense, the driver interpolates between two
consecutive speed references.
Pn306
Soft Start Acceleration Time Speed
Setting Range Setting Unit Factory Setting Setting Validation
0 ~ 10000 1 ms 0 Immediately
Pn307
Soft Start Deceleration Time Speed
Setting Range Setting Unit Factory Setting Setting Validation
0 ~ 10000 1 ms 0 Immediately
The soft start function enables smooth speed control when inputting a stepwise speed reference or when selecting
internally set speeds. Set both Pn306 and Pn307 to “0” for normal speed control.
Set these parameters as follows:
- Pn306:The time interval from the time the servomotor starts until the servomotor maximum speed is reached.
- Pn307:The time interval from the time the servomotor is operating at the servomotor maximum speed until it stops.
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