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Chapter 6 Control Modes of Operation|ASDA-AB Series
Revision January 2009 6-29
6.4.2 Structure of Torque Control Mode
Basic Structure:
The toque command processing is used to select the command source of torque control according to
chapter 6.4.1, including max. analog torque command (parameter P1-41) and smoothing strategy of
torque control mode. The current control block diagram is used to manage the gain parameters of the
servo drive and calculate the current input provided to motor instantaneously. As the current control
block diagram is too complicated, setting the parameters of current control block diagram is not allowed.
The function and structure of torque command processing is shown as the figure below:
A/D
P1-12
~1-14
P1-41
P1-01
P1-07
TCM0,TCM1 signal of CN1
Command
selection
Low-pass
filter
(Command source:
Internal parameter)
(Command source:
External analog signal)
Analog signal
Internal
parameter
Proportion
Gain
The command source is selected according to the state of TCM0, TCM1 and parameter P1-01 (T or Tz).
Whenever the command signal needs to be more smoothly, we recommend the users to use
proportional gain (scalar) and low-pass filter to adjust torque.
6.4.3 Smoothing Strategy of Torque Control Mode
Relevant parameters:
P1 - 07
TFLT
Smooth Constant of Analog Torque Command
(Low-pass Filter)
Communication Addr.: 0107H
Default: 0 Related Section:
Applicable Control Mode: T Section 6.4.3
Unit: ms
Range: 0 ~ 1000 (0: Disabled)