Rockwell Automation 20P PowerFlex Digital DC Drive - Manual (Page 287)

Rockwell Automation Publication 20P-UM001I-EN-P - February 2013 287
Application Notes Appendix C
Linking Parameters Via the Scale Block Parameters
Most parameter values are entered directly by the user. However, certain
parameters can be “linked,” via the Scale Block parameters, so the value of one
parameter becomes the value of another.
For example, the value of an analog input 1, parameter 70 [Anlg In1 Sel], can be
linked to parameter 660 [Accel Time 1]. In order to do so:
• Set parameter 70 [Anlg In1 Sel] to 12 “UserDefined0”.
• Set parameter 484 [Scale1 Input] to “503” (the parameter number of
[UserDefined0]).
• Set parameter 485 [Scale1 Output] to “660” (the parameter number of
[Accel Time 1]).
In this way, rather than entering an acceleration time directly (via HIM), the link
allows the value to change by varying the analog signal. This can provide
additional flexibility for certain applications. This functionality should be tested
for the desired response before applying to an application.
Speed Regulation Functions The PowerFlex DC Digital drive provides a flexible speed regulator circuit that
can be adapted to the requirements of a variety of applications. The drive is set to
PI regulation by default.
Adaptive Speed Regulator
The adaptive speed regulator function enables different gains of the speed
regulator depending on the speed reference or another variable (adaptive
reference). This allows optimum adaptation of the speed regulator to the specific
application.