Despatch MIC1422 Controller Manuel d'utilisateur télécharger pdf (Page 75)

APPENDIX C: RaPID CONTROL FEATURE

The RaPID (Response - assisted PID) feature offers dramatic improvements in control quality

compared with conventional PID techniques. It responds much more effectively than PID

techniques to load conditions. With this feature, the instrument's response at start-up, during

setpoint changes and during disturbances shows considerably reduced overshoot and much

more shorter settling times (see below).

RaPID works best with well-tuned terms. It is therefore recommended, on newly installed

instruments, that the Pre-Tune facility is run before RAP[D is engaged.

Note: If Pre-Tune and RaPID are both engaged, Pre-Tune will run first. Once Pre-Tune (a

single shot process) is automatically disengaged, RaPID will operate automatically.

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Despatch MIC1422 Controller Manuel d'utilisateur Page 75