Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manuel d'utilisateur télécharger pdf (Page 41)

G11

PID - 3

NAME SYMBOL DATAPOINT

INPUTS

PROCESS VARIABLE PV3 C208

DEVIATION DV3 C229

RESET FEEDBACK RF3 C235

CONTROL TRACK

COMMAND

CTC3 L195

PARAMETERS PROPORTIONAL BAND PB3 C214

RESET TIME TR3 C215

RATE TIME TD3 C216

OUTPUT HIGH LIMIT OH3 C217

OUTPUT LOW LIMIT OL3 C218

MANUAL RESET MR3 C219

INSTRUMENT RANGE IR3 C223

FEED FORWARD FF3 C230

REVERSE SWITCH RSW3 L178

OUTPUTS

CONTROL OUTPUT CO3 C231

Description:

This subroutine computes a control output signal based on the above listed inputs

and parameters. The result is available as a database parameter CO. When the

control track command is zero,the module output will track the reset feedback by

back calculating the integrator term. When CTC is 1, the reset feedback is used by

the integrator to calculate the next output and should reflect the value (scaled

0-100%) of the value of the final control element. For standard PID controller

operation, reset feedback should equal OUT and control track command should

equal AUT.

MODULAR CONTROLLER CUSTOMIZATION GUIDE

2-34

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 122 123

Pas de commentaire

Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manuel d'utilisateur Page 41