Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manuel d'utilisateur télécharger pdf (Page 39)

G09

PID - 1

NAME SYMBOL DATAPOINT

INPUTS

PROCESS VARIABLE PV1 C136

DEVIATION DV1 C157

RESET FEEDBACK RF1 C163

CONTROL TRACK

COMMAND

CTC1 L147

PARAMETERS PROPORTIONAL BAND PB1 C142

RESET TIME TR1 C143

RATE TIME TD1 C144

OUTPUT HIGH LIMIT OH1 C145

OUTPUT LOW LIMIT OL1 C146

MANUAL RESET MR0 C147

INSTRUMENT RANGE IR1 C151

FEED FORWARD FF1 C158

REVERSE SWITCH RSW1 L130

OUTPUTS

CONTROL OUTPUT CO1 C159

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.

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Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manuel d'utilisateur Page 39