The book is devoted to the design of contactless control logic devices of industrial automation. The mathematical foundations of construction of logical devices and engineering methods of their synthesis, as well as the foundations of unification of functional nodes and blocks. are presented. The book contains information about the recommended methods for constructing control and diagnostic tests and their application in the setup and maintenance of control logic devices. Attention is paid to calculations of reliability and cost-effectiveness of contactless logic devices. The book is intended for engineers and technicians of industrial enterprises and design organizations, as well as for students specializing in the automation of electric drives, industrial installations and production processes. Mathematical Foundations for the Construction of Logical Devices . Representation of numbers. Basic Definitions. Logical Functions. The Laws of Logical Algebra. Superposition of logical functions. Complete systems of logical functions. Normal and perfect normal forms of logical functions. Application of Carnot cards for the image and transformation of logical functions. Minimization of logical functions. Basic information about discrete machines. General issues of logical synthesis of contactless control devices. Basic Concepts and Definitions . Preparation of technological data and technical conditions for the logical synthesis of control logic devices . Separation of the control system into functional nodes and reduction of the number of input variables. Recommended methods for synthesizing the structure of control logic devices. Design of control logic devices based on the analysis of relay-contact circuits . Method of drawing up structural formulas according to the relay-contact scheme. Construction of contactless circuits according to relay-contact schemes of class PConstruction of contactless circuits according to relay-contact schemes of class NExample of construction of contactless logical scheme of control of passenger elevator. Synthesis of control logic devices based on Carnot transition tables and maps. Transition tables and their compilation. Compression tables. Selection of intermediates. Ways to Eliminate Critical Competitions . Conformity maps and their compilation. Maps of intermediate and output functions. Synthesis of control logic devices based on cyclograms. Definitions and Definitions . Compiling algebraic expressions by cyclograms. Compiling cyclograms by algebraic expressions. Compilation of cyclograms according to the relay-contact variant. Synthesis of the scheme according to the conditions of operation of the logical device . Obtaining a state table by cyclogram. Synthesis of control logic devices using state and event algebra operators. Definition of State and Event Algebra. State and Event Algebra Operators . Application of State and Event Algebra Operators for the Synthesis of Control Logic Devices. Automation of synthesis of control logic devices. Application of computer technology for the synthesis of control logic devices. Application of specialized logic machines for synthesis of control logic devices. Application of computer for synthesis of control logic devices. Technical data of elements of control logic devices. General information about contactless elements. Technical data of transistor contactless elements of the Logic-T seriesFeatures of inclusion of elements of the Logic-T seriesContactless input and output devices. General information about integrated circuits and technical data of K155 series chips. Unification of functional nodes and blocks of control logic devices. Basics and tasks of unification of functional nodes and blocks. Conditions and principles of unification of functional nodes and blocks . Method of building a system of unified nodes and blocks . Method of construction of control logic devices from unified nodes and blocks. Development and application of unified units and blocks for the construction of a logical elevator control station . Technical diagnostics of control logic devices . Basic concepts of technical diagnostics . Disadvantages of discrete object. Mathematical models of malfunctions . Classification of means of diagnosis. Methods of building tests. Adhesive Tests. Technical documentation for the diagnostics of the control logic device