Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manuel d'utilisateur télécharger pdf (Page 64)

F-CIM 51

PID - 1

NOT REUSABLE

NAME SYMBOL DATAPOINT

INPUTS

n-1

DEVIATION DV1 C157

A [unused]

B RESET FEEDBACK RF1 C163

C CONTROL TRACK COM-

MAND

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 module computes a control output signal based on the above listed inputs and parameters.

The result is simultaneously available as the module output Sn and as a database parameter CO.

The A, B, and C inputs can be any L,B, C[S], or H type datapoint. When the control track command

input is less than one, the module output will track the reset feedback input (B) by back calculating

the integrator term. When (C) input is greater than or equal to 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 reset feedback, (B) should be OUT and con-

trol track command should be AUT.

MODULAR CONTROLLER CUSTOMIZATION GUIDE

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Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manuel d'utilisateur Page 64