Pneumatic power transmission - Sequential and combinatory automatisms

The functions of the information chain are: acquisition, processing, and communication. These interconnected and coordinated functions enable the creation of an "automated system" capable of coordinating the sequence of actions in the operational phase according to a set of specifications. This "automated system" is built using components that are wired or programmed to perform the operations required by the specifications. The creation of an automated system (control section) requires two types of studies:

• the study of the components and elements of information processing;

• the review of the programs to be developed and/or the wiring diagrams.

The purpose of this document is to outline the various technologies used in the construction of the information chain and the associated selection criteria. We will then examine the basic concepts of managing the start and stop modes of an automated system, and finally, the essential concepts involved in designing pneumatic circuit diagrams.

This document expands on the description of automated batch processing systems [BM 6 110] and details the procedures for generating orders to be sent to the components of the operational system [BM 6 111] .