Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manual do Utilizador descarregar pdf (Página 40)

G10

PID - 2

NAME SYMBOL DATAPOINT

INPUTS

PROCESS VARIABLE PV2 C172

DEVIATION DV2 C193

RESET FEEDBACK RF2 C199

CONTROL TRACK

COMMAND

CTC2 L171

PARAMETERS PROPORTIONAL BAND PB2 C178

RESET TIME TR2 C179

RATE TIME TD2 C180

OUTPUT HIGH LIMIT OH2 C181

OUTPUT LOW LIMIT OL2 C182

MANUAL RESET MR2 C183

INSTRUMENT RANGE IR2 C187

FEED FORWARD FF2 C194

REVERSE SWITCH RSW2 L154

OUTPUTS

CONTROL OUTPUT CO2 C195

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

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Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manual do Utilizador Página 40