Allen-Bradley LOGIX 5000 User Manual

Process Control Instructions
Chapter 1
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018 247
Follow these steps to configure the tuner.
1. Put all three CV parameters into Manual mode.
2. Set the appropriate AtuneStart parameter.
The tuner starts collecting PV and CV data for noise calculation.
3. After collecting 60 samples (60*DeltaT) period, the tuner adds StepSize to
the CV.
After successfully collecting the PV data as a result of the CV step change,
the CV assumes its value before the step change and the AtuneStatus,
GainTuned, TCTuned, DTTuned, and RespTCTuned parameters are
updated.
4. Set the appropriate AtuneUseModel parameter to copy the tuned
parameters to the model parameters
The function block then resets the AtuneUseModel parameter.
After a successful AutoTuneDone, the Atune parameter is set to one (1).
Tuning completed successfully.
To identify models and to calculate response time constants for all six CV - PV
processes, run the tuner up to three times to obtain CV1 - PV2, CV2 - PV2, and
CV3 - PV2 models and tuning, respectively. After each run, two process models
are identified: CV - PV1 and CV - PV2 (two process variables respond as a result
of one CV step change)
MMC Function Block Tuning
Procedure

Allen-Bradley LOGIX 5000 Specifications

General

Brand	Allen-Bradley
Model	LOGIX 5000
Category	Controller
Language	English