Acceleration And Deceleration Operations During Speed Control - Omron CJ1W-NC271 - 12-2009 Operation Manual

Acceleration and Deceleration Operations
7-4-5

Acceleration and Deceleration Operations during Speed Control

If the reversal mode operation using limit input is set, however, the stop opera-
tion when a limit input signal is input will depend on the Servo Drive setting.
For details on stop operations when using limit input signal inputs, refer to 7-5
Limit Input Operations and Reversal Mode Operation Using Limit Inputs in 8-
2-4 Origin Search Operation.
When the speed control command is executed, the Servo Drive performs
stepped speed control from the present feedback speed to the target speed
specified in the speed command value for speed control. Apart from smoothly
increasing/decreasing the speed command value (for speed control) when
starting speed control, shock in acceleration/deceleration when performing
speed control can also be minimized by setting the Servo Parameters Soft
Start Acceleration Time (Pn312 for G5 Series, Pn058 for G Series and Pn305
for W Series) and Soft Start Deceleration Time (Pn313 for G5 Series, Pn059
for G Series and Pn306 for W Series) to create a trapezoidal speed curve.
For details on speed control, refer to 10-5 Speed Control.
G5-series Acceleration/Deceleration Constants for Speed Control
Parameter Parameter name
No.
Pn312 Soft start accelera-
tion time
Pn313 Soft start decelera-
tion time
G-series Acceleration/Deceleration Constants for Speed Control
Parameter Parameter name
No.
Pn058 Soft start accelera-
tion time
Pn059 Soft start decelera-
tion time
W-series Acceleration/Deceleration Constants for Speed Control
Parameter Parameter name
No.
Pn305 Soft start accelera-
tion time
Pn306 Soft start decelera-
tion time
The Soft Start Acceleration Time and Soft Start Deceleration Time are set
respectively as the acceleration time and deceleration time between speed 0
(speed command value for speed control: 0%) and the maximum rotation
speed of the Servomotor (speed command value for speed control: 100%).
The acceleration time and deceleration time for the actual target speed are as
follows:
Unit Setting Parameter
range size
×2ms
0 to 5000 2
×2ms
0 to 5000 2
Unit Setting Parameter
range size
×2ms
0 to 5000 2
×2ms
0 to 5000 2
Unit Setting Parameter
range size
ms 0 to 10000 2
ms 0 to 10000 2
Section 7-4
Default
setting
0
0
Default
setting
0
0
Default
setting
0
0
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