Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 88)

88 Rockwell Automation Publication 750-RM002B-EN-P - September 2013
Chapter 1 Drive Configuration
Example
Set the PID lower and Upper limits to ±10% with Maximum Frequency set to
100 Hz. This lets the PID loop adjust the output of the drive ±10 Hz.
P1081 [PID Upper Limit] must always be greater than P1082 [PID Lower
Limit].
Once the drive has reached the programmed Lower and Upper PID limits, the
integrator stops integrating and no further “windup” is possible.
PID Output Mult
P1080 [PID Output Mult] enables additional scaling of the PID loop output.
Example
The application is a velocity controlled winder. As the roll builds up, the output
gain can be reduced to allow the dancer signal to be properly reacted to by the
PID loop without changing tuning of the PID loop.
PID Deadband
P1083 [PID Deadband] conditions the PID reference. If the PID reference has
undesired rapid changes, the deadband can help smooth out these transitions.
Reset Parameters to Factory
Defaults 1. Access the Status Screen on the 20-HIM-A6 or 20-HIM-CS6 Human
Interface Module.
2. Use the left-right arrow keys to scroll to the port of the device whose
parameters you want to set to factory defaults (for example, Port 00 for the
Host Drive or the respective port number for the drive’s connected
peripherals).
3. Press the Folder key next to the green Start key to display its last-viewed
folder.
4. Use the left-right arrow keys to scroll to the Memory folder.
00
Stopped
0.00 Hz
AUTO
Host Drive
240V 4.2A
20G...D014
ESC REF TEXT
F
PAR#