Operation Mode
ASDA-B3
6-16
6
6.3.2 Control structure of Speed mode
The basic control structure is shown in the following flowchart.
Speed command
Speed control
unit
Speed
command
processing unit
Torque limit
Resonance
suppression unit
Speed
estimator
Motor
Current
loop
The Speed command processing unit selects the command source (see Section 6.3.1),
including the scaling parameter (P1.040) for maximum rotation speed corresponding to the
analog voltage and the S-curve parameter for smoothing the speed. The Speed control unit
manages the gain parameters for the servo drive and calculates the current command for servo
motor in real-time. The Resonance suppression unit suppresses the resonance of the machine.
The following diagram introduces the function of Speed command processing unit. Its structure
is shown as follows.
Analog signal
Command
selection
P1.001
Register
P1.009 -
P1.011
Scaling
P1.040
S-curve filter
P1.036
S-curve filter for
analog
commands
P1.059
Low-pass filter
P1.006
A/D
SPD0 and SPD1 signals of CN1
The upper path is the command from the register and the lower one is the command from the
external analog voltage that you can select with the status of SPD0 and SPD1, and P1.001
(S or Sz). In this condition, the S-curve and low-pass filters are applied to achieve a smoother
response.
Summary of Contents for ASDA-B3 Series
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Page 53: ...Installation ASDA B3 2 24 2 This page is intentionally left blank ...
Page 137: ...Wiring ASDA B3 3 84 3 This page is intentionally left blank ...
Page 161: ...Test Operation and Panel Display ASDA B3 4 24 4 This page is intentionally left blank ...
Page 285: ...Motion Control ASDA B3 7 66 7 This page is intentionally left blank ...
Page 477: ...Parameters ASDA B3 8 192 8 This page is intentionally left blank ...
Page 515: ...Absolute System ASDA B3 10 22 10 This page is intentionally left blank ...
Page 747: ...Troubleshooting ASDA B3 13 54 13 This page is intentionally left blank ...
Page 809: ...Accessories ASDA B3 B 32 B This page is intentionally left blank ...
Page 813: ...Revision History ASDA B3 4 This page is intentionally left blank ...