Delta Electronics none Analog Speed Command S-curve Filter, Analog Speed Command Low-pass Filter

Chapter 6 Control Modes of OperationASDA-AB Series

Analog Speed Command S-curve Filter

ASDA-AB series servo drives also provide Analog Speed Command S-curve Filter for the smoothing in response to a sudden analog input signal.

Speed (rpm)	Analog speed command	Motor Torque
3000

0									Time (sec)
1	2	3	4	5	6	7	8	9

-3000

The analog speed command S-curve filter is for the smoothing of analog input signal and its function is the same as the S-curve filter. The speed and acceleration curve of analog speed command S-curve filter are both continuous. The above figure shows the curve of analog speed command S-curve filter and the users can see the ramp of speed command is different during acceleration and deceleration. Also, the users can see the difference of input command tracking and can adjust time setting by using parameter P1-34, P1-35, P1-36 to improve the actual motor performance according to actual condition.

Analog Speed Command Low-pass Filter

Analog Speed Command Low-pass Filter is used to eliminate high frequency response and electrical interference from an analog speed command and it is also with smoothing function.

Relevant parameters:

P1 - 06

SFLT

Accel / Decel Smooth Constant of Analog Speed Command (Low-pass Filter)

Communication Addr.: 0106H

Default: 0	Related Section:
Applicable Control Mode: S	Section 6.3.3
Unit: ms
Range: 0 ~ 1000 (0: Disabled)

NOTE

1)If the setting value of parameter P1-06 is set to 0, it indicates the function of this parameter is disabled and the command is just By-Pass.

Target Speed

SFLT

Revision March 2008, Doc. Name: 2007PDD23000011 6-17