Pid function – Rockwell Automation 20P PowerFlex Digital DC Drive User Manual
Page 275
Rockwell Automation Publication 20P-UM001I-EN-P - February 2013
275
Application Notes
Appendix C
PID Function
The PID function is used to increase or reduce the reference signal output to the
speed or current regulator of the drive. The PID function can be used for nip-
roll, winder/unwinder, roll doctor/salvage machine, pump and extruder pressure
control and extruder temperature control applications. (See the complete “PID
Control” block diagram on page
.)
Examples are included below for configuring the following applications:
•
Speed winder with a load cell and tension control
❏ Line speed signal (see Configure a Line Speed Signal on page
❏ Closed loop dancer / load cell feedback (see Configure the Feedback
Signal in the Follower Drive(s) on page
)
❏ Tension set point (see Configure the Tension Set Point Signal in the
Follower Drive(s) on page
)
•
Torque winder with a load cell and tension control
❏ Line speed signal (see Configure a Line Speed Signal on page
❏ Closed loop dancer / load cell feedback (see Configure the Feedback
Signal in the Follower Drive(s) on page
)
❏ Tension set point (see Configure the Tension Set Point Signal in the
Follower Drive(s) on page
)