Delta ASD-A3-0121, User Manual

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ASDA-A3 Operation Mode
Revision December, 2017
6-17
6
Analog Speed command filter
The Analog Speed Command filter helps to stabilize the motor operation when the analog input
signal (speed) changes rapidly.
(1) Analog Speed command (2) Motor torque
The Analog Speed Command filter smoothes the analog input signal. Its time program is the
same as the S-curve filter at normal speed. Also, the speed and acceleration curves are both
continuous. The above graph shows the curve of the Speed command and the motor torque
when you apply the Analog Speed Command filter. In the diagram above, the slopes of the
Speed command in acceleration / deceleration are different. You can adjust the time setting
(P1.034, P1.035, and P1.036) according to the actual application to improve the performance.
Low-pass filter for commands
You usually use the low-pass filter to remove unwanted high-frequency response or noise so that
the speed change is smoother.
Relevant parameters: refer to Chapter 8 for more information.
Parameter Function
P1.006 Speed command smoothing constant (Low-pass filter)
Target speed
SFLT