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ProNet Series AC Servo User's Manual
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4.5.4 Soft Start
The soft start function converts the stepwise speed reference inside the servo drive to a consistent rate of acceleration
and deceleration.
Pn310 can be used to select the soft start form:
0: Slope; 1: S curve; 2: 1
st
-order filter; 3: 2
nd
-order filter
Pn306
Soft Start Acceleration Time
Setting Range Setting Unit Factory Setting Setting Validation
0 ～ 10000
1ms 0 Immediately
Pn307
Soft Start Deceleration Time
Setting Range Setting Unit Factory Setting Setting Validation
0 ～ 10000 1ms
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.
4.5.5 Speed Reference Filter Time Constant
Pn308
Speed Reference Filter Time Constant
Setting Range Setting Unit Factory Setting Setting Validation
0
～
10000 1ms 0 Immediately
This smooths the speed reference by applying a 1
st
–order delay filter to the analog speed reference (V-REF) input. A
value that is too large, however, will decrease response.
Speed
Speed
Speed