Additional Technical Information - EBRO ARMATUREN EP 501 C Operating Instructions Manual

Electropneumatic positioner and process controller

Table of Contents

onTenTs

34..

SELECTION.CRITERIA.FOR.CONTINUOUS.VALVES.................................................................................................. 191

35..

PROPERTIES.OF.PID.CONTROLLERS................................................................................................................................ 193

35.1.. P-portion. . .............................................................................................................................................................................. 193

35.2.. I-portion. . ................................................................................................................................................................................ 194

35.3.. D-portion. . .............................................................................................................................................................................. 195

35.4.. Superposition.of.P,.I.and.D.Portions...................................................................................................................... 196

35.5.. Implemented.PID.controller. . ...................................................................................................................................... 197

35.5.1.

35.5.2.

36..

ADJUSTMENT.RULES.FOR.PID.CONTROLLERS. . ......................................................................................................... 198

36.1.. Adjustment.rules.according.to.Ziegler.and.Nichols.(oscillation.method)......................................... 198

36.2.. Adjustment.rules.according.to.Chien,.Hrones.and.Reswick..

(actuating.variable.jump.method). . .......................................................................................................................... 200

190