Omron R88D-KTA5L User Manual page 346

5-2 Speed Control
Speed Command Acceleration/Deceleration Setting Function (Pn312, Pn313, Pn314)
With a step speed command, you can change the speed command based on this setting to
reduce the shock caused by change in acceleration.
Parameter
number
Pn312
Pn313
Pn314
Soft Start Acceleration Time (Pn312), Soft Start Deceleration Time (Pn313)
If a step speed command is input, set in Soft Start Acceleration Time (Pn312) the time needed
for the speed command to reach 1,000 r/min. Also set in Soft Start Deceleration Time (Pn313)
the time needed for the speed command to reach 0 r/min from 1,000 r/min.
Soft start acceleration time [ms] = Vc/1,000 × Pn312 × 1 ms
5
Soft start deceleration time [ms] = Vc/1,000 × Pn313 × 1 ms
Speed [r/min]
1000 r/min
S-curve Acceleration/Deceleration Time Setting (Pn314)
Set the S-curve time in the time width centered on the inflection points in acceleration/deceleration relative to the
acceleration or deceleration time set in Soft Start Acceleration Time (Pn312) or Soft Start Deceleration Time (Pn313).
ta = Vc/1,000 × Pn312 × 1 ms
td = Vc/1,000 × Pn313 × 1 ms
ts = Pn314 × 1 ms
Set an appropriate time so that ta > ts and td > ts are satisfied.
Speed [r/min]
Target speed
(Vc)
5-11
Parameter
name
Soft Start Set the acceleration time for acceleration process
Acceleration Time with respect to the speed command input.
Soft Start Set the deceleration processing deceleration
Deceleration Time time for speed command inputs.
S-curve Acceleration/ Set the S-curve acceleration/
Deceleration Time Setting deceleration time.
A speed command that is input in steps
Pn312×1 ms
ts
ts
ta
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Explanation
0 to 10000
0 to 10000
0 to 1000
A speed command after the
acceleration/deceleration processing
ts
A speed command after the
acceleration/deceleration processing
Setting
Unit
range
ms/(1,000 r/
min)
ms/(1,000 r/
min)
ms
Time
Pn313×1 ms
ts
Time
td