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Rockwell Automation Publication 2198-UM002E-EN-P - February 2018
Appendix D
Motor Control Feature Support
The Static test requires that you enter initial estimates for Rated Flux Current,
Stator Resistance (Rs), Stator Leakage Reactance (X1), and Rotor Leakage
Reactance (X2) into the Motor Model fields.
• For the Logix Designer application, version 29.00 or later, initial
estimates are populated by the controller.
• For the Logix Designer application, version 28.00 or earlier, this can be
done by running and accepting the results of a Calculate test, or by
entering the values directly into the Logix Designer application.
Dynamic Motor Test
Dynamic tests are run with the motor disconnected from the load, because the
motor shaft turns and there are no travel limits. This is often the most accurate
test method. During this test, the Stator Resistance (Rs), Stator Leakage
Reactance (X1) and Rotor Leakage Reactance (X2) values are measured in a
series of static tests. The Rated Flux Current is measured during a rotational
test, in which the drive commands 75% of the motor rated speed.
The Dynamic test also requires that you enter initial estimates for Rated Flux
Current, Stator Resistance (Rs), Stator Leakage Reactance (X1), and Rotor
Leakage Reactance (X2) into the Motor Model fields.
• For the Logix Designer application, version 29.00 or later, initial
estimates are automatically populated by the controller.
• For the Logix Designer application, version 28.00 or earlier, this can be
done by running and accepting the results of a Calculate test, or by
entering the values directly into the Logix Designer application.
The Dynamic test uses the Ramp Acceleration and Ramp Deceleration
attributes to set the rotational test ramp-up and ramp-down times. If the
resulting acceleration/deceleration times are less than 10 seconds, 10 seconds is
used. If these attributes are not supported, 10 seconds is also used.
When configured for closed-loop control, the Dynamic test requires that an
accurate system inertia is set in the Logix Designer application.
• For the Logix Designer application, version 29.00 or later, a default
value is automatically populated by the controller.
• For the Logix Designer application, version 28.00 or earlier, this can be
done by running and accepting the results of an Autotune test, or by
entering the motor inertia value directly into the Logix Designer
application.
IMPORTANT
The Dynamic test does not support travel limits.