Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018 195
When Sweep Frequency is selected the drive applies an algorithm that excites the
motor at a predetermined frequency and, while "sweeping" the frequency to zero,
checks for the motor current to change sign when the frequency matches the speed
of the motor. The drive then applies this speed to the to the Ramp Generator
output.
See also
Command Generator Signal Attributes on page 195
These are the command generator signal attributes associated with a Motion
Control Axis.
Position Fine Command
Usage Access T Data Type Default Min Max Semantics of Values
Optional - P Get/GSV T REAL - - - Position Units
The Position Fine Command attribute is the output value from the Command
Position fine interpolator.
Velocity Fine Command
Usage Access T Data Type Default Min Max Semantics of Values
Optional - PV Get/GSV T REAL - - - Velocity Units
The Velocity Fine Command attribute is the output value from the Command
Velocity fine interpolator. When no Command Velocity signal is present when
performing position control, this signal can be derived by scaling the Differential
Position output value of the Command Position fine interpolator.
Acceleration Fine Command
Usage Access T Data Type Default Min Max Semantics of Values
Optional - C Get/GSV T REAL - - - Accel Units
The Acceleration Fine Command attribute is the output value from the
Command Acceleration fine interpolator. When no Command Acceleration
signal is present when performing position or velocity control, this signal can be
derived by scaling the Differential Velocity output value of the Command
Velocity fine interpolator. If no Command Velocity signal is present, the
Interpolated Command Acceleration signal can be derived by scaling the 2
nd
Differential Position output value of the Command Position fine interpolator.
Attributes
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