Safe Drive Controls With Frequency Inverters
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Safe Drive Controls With Frequency Inverters
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Author : Werner, C.
language : en
Publisher: DGUV/IFA
Release Date : 2019-08-22
Safe Drive Controls With Frequency Inverters written by Werner, C. and has been published by DGUV/IFA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-22 with Technology & Engineering categories.
Machine drives using closed-loop speed control are state of the art. As on drives without closed-loop speed control, the movement of a machine part at varying speeds frequently gives rise to a hazard against which the machine operators must be protected. The simplest means of preventing movements during manual intervention in danger zones is the (safe) disconnection of the energy driving the relevant motors. This is however often not possible, for example when intervention is required whilst the machine is running for the purpose of clearing faults, setup, during test operation, etc. Scenarios such as these require the machine to be operated with protective equipment disabled. In order for the operators‘ safety to be assured nonetheless, Annex I, Section 1.2.5 of the Machinery Directive sets out the required measures. Safety sub-functions for drive controls have been defined for implementation of the machine functions required for this purpose. Examples are STO (safe torque off), SLS (safely limited speed) and SS1 (safe stop 1). This report addresses the use of drive control equipment that implements safety sub-functions at a certain Performance Level according to ISO 13849-1 in consideration of the application and risks. The basic safety sub-functions of drive controls and the requirements relating to their use are presented. The principles of operation of frequency inverters and DC converters are described, and implementation of the safety sub-functions are explained. Examples are provided of application circuits by which the various machine safety functions can be implemented. The corresponding SISTEMA files for quantification of these safety functions are available for download free of charge. The examples include both standard frequency inverters and frequency inverters with integrated safety functions.
Safe Drive Controls With Frequency Converters
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Author : Ralf Apfeld
language : en
Publisher:
Release Date : 2014
Safe Drive Controls With Frequency Converters written by Ralf Apfeld and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Functional Safety Of Machine Controls
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Author : Hauke, M.
language : en
Publisher: DGUV/IFA
Release Date : 2019-08-20
Functional Safety Of Machine Controls written by Hauke, M. and has been published by DGUV/IFA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-20 with Technology & Engineering categories.
The EN ISO 13849-1 standard, “Safety of machinery – Safety-related parts of control systems”, contains provisions governing the design of such parts. This report is an update of BGIA Report 2/2008e of the same name. It describes the essential subject-matter of the standard in its third, revised 2015 edition, and explains its application with reference to numerous examples from the fields of electromechanics, fluidics, electronics and programmable electronics, including control systems employing mixed technologies. The standard is placed in its context of the essential safety requirements of the Machinery Directive, and possible methods for risk assessment are presented. Based upon this information, the report can be used to select the required Performance Level PLr for safety functions in control systems. The Performance Level PL which is actually attained is explained in detail. The requirements for attainment of the relevant Performance Level and its associated Categories, component reliability, levels of diagnostic coverage, software safety and measures for the prevention of systematic and common-cause failures are all discussed comprehensively. Background information is also provided on implementation of the requirements in real-case control systems. Numerous example circuits show, down to component level, how Performance Levels a to e can be engineered in the selected technologies with Categories B to 4. The examples provide information on the safety principles employed and on components with well-tried safety functionality. Numerous literature references permit closer study of the examples provided. The report shows how the requirements of EN ISO 13849-1 can be implemented in engineering practice, and thus makes a contribution to consistent application and interpretation of the standard at national and international level.
Functional Safety Of Machinery
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Author : Marco Tacchini
language : en
Publisher: John Wiley & Sons
Release Date : 2023-04-04
Functional Safety Of Machinery written by Marco Tacchini and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-04 with Technology & Engineering categories.
FUNCTIONAL SAFETY OF MACHINERY Enables readers to understand ISO 13849-1 and IEC 62061 standards and provides a practical approach to functional safety in machinery design Functional Safety of Machinery: How to Apply ISO 13849-1 and IEC 62061 introduces functional safety of machinery as a single unified approach, despite the existence of two standards. Aligning with the latest updates of ISO 13849-1 and IEC 62061, the book explains the intent behind the standards and the mathematical basis on which they are written, details the differences between the two standards, and prescribes ways to put them into practice. To aid in seamless reader comprehension, detailed examples are included throughout the book which walk readers through concepts like Random and Systematic Failures, High and Low demand mode of operation, Diagnostic Coverage, and Safe Failure Fraction. Other sample topics covered within the book include: Basics of reliability engineering and functional safety Roles of the standards in the design and evaluation of safety functions Description of the Main Parameters used in the two standards How to deal with Low Demand Safety Systems The Categories of ISO 13849-1 and the Basic Subsystem Architectures of IEC 62061 How Categories and Architectures can be validated Machinery design engineers, machinery manufacturers, and professionals in system and industrial safety fields can use this book as a one-stop resource to understand the specifics and applications of ISO 13849-1 and IEC 62061.
Control Techniques Drives And Controls Handbook
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Author : Bill Drury
language : en
Publisher: IET
Release Date : 2001
Control Techniques Drives And Controls Handbook written by Bill Drury and has been published by IET this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Electric controllers categories.
Annotation A comprehensive guide to the technology underlying drives, motors and control units, this title contains a wealth of technical information for the practising drives and electrical engineer.
Automatic Control Of Converter Fed Drives
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Author : M.P. Kazmierkowski
language : en
Publisher:
Release Date : 1994
Automatic Control Of Converter Fed Drives written by M.P. Kazmierkowski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Technology & Engineering categories.
This book introduces the reader in a systematical way to the design philosophy behind vector control systems. The mathematical motor models based on complex-space vector descriptions as well as the control structures for DC motors provide a perfect basis for explaining the principles of AC motor vector control. An in-depth review of electromagnetic transients in induction motors under various methods of frequency control is given. This is explained with the help of appropriate block schemes and new equivalent circuits. Properties of AC motors under non-sinusoidal supply are reviewed. The basic power converter topologies applied in motor control technology as well as symmetry and loss reduction problems are discussed. Some examples of controller design methods are presented step by step. An important feature of the book is that it contains many examples of systems applied in practical engineering as well as simulation and experimental results. The volume will be of interest to all those familiar with the basics of electrical machines and control systems theory. Therefore, it is recommended to students of electrical, electronics and mechanics departments. The book can also be used by those working in industry, who are interested in modern power electronics, drives and motion control, robotics as well as automation of industrial processes.
Control In Power Electronics And Electrical Drives
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Author : R. Zwicky
language : en
Publisher: Elsevier
Release Date : 2014-06-28
Control In Power Electronics And Electrical Drives written by R. Zwicky and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-28 with Technology & Engineering categories.
Contains 97 papers which provide a valuable overview of the latest technical innovations in this rapidly expanding field. Areas of development which receive particular attention include the emergence of power switching transistors, the application of microprocessors to regulation and control of static converters and electrical drives, the use of more sophisticated control strategies and the utilization of power electronics in new application fields.
The Control Techniques Drives And Controls Handbook
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Author : Bill Drury
language : en
Publisher: IET
Release Date : 2009-06-24
The Control Techniques Drives And Controls Handbook written by Bill Drury and has been published by IET this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-06-24 with Technology & Engineering categories.
This book contains a great deal of practical information for drives and industrial engineers who use motors and drives. It is a comprehensive guide to the technology underlying drives and motors.
Advanced Control Of Electrical Drives And Power Electronic Converters
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Author : Jacek Kabziński
language : en
Publisher: Springer
Release Date : 2016-09-30
Advanced Control Of Electrical Drives And Power Electronic Converters written by Jacek Kabziński and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-30 with Technology & Engineering categories.
This contributed volume is written by key specialists working in multidisciplinary fields in electrical engineering, linking control theory, power electronics, artificial neural networks, embedded controllers and signal processing. The authors of each chapter report the state of the art of the various topics addressed and present results of their own research, laboratory experiments and successful applications. The presented solutions concentrate on three main areas of interest: · motion control in complex electromechanical systems, including sensorless control; · fault diagnosis and fault tolerant control of electric drives; · new control algorithms for power electronics converters. The chapters and the complete book possess strong monograph attributes. Important practical and theoretical problems are deeply and accurately presented on the background of an exhaustive state-of the art review. Many results are completely new and were never published before. Well-known control methods like field oriented control (FOC) or direct torque control (DTC) are referred as a starting point for modifications or are used for comparison. Among numerous control theories used to solve particular problems are: nonlinear control, robust control, adaptive control, Lyapunov techniques, observer design, model predictive control, neural control, sliding mode control, signal filtration and processing, fault diagnosis, and fault tolerant control.
Electrical Drives
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Author : Jens Weidauer
language : en
Publisher: John Wiley & Sons
Release Date : 2014-07-07
Electrical Drives written by Jens Weidauer and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-07 with Technology & Engineering categories.
From the point of view of a user this book covers all aspects of modern electrical drives. It is aimed at both users, who wish to understand, design, use, and maintain electrical drives, as well as specialists, technicians, engineers, and students, who wish to gain a comprehensive overview of electrical drives. Jens Weidauer and Richard Messer describe the principles of electrical drives, their design, and application, through to complex automation solutions. In the process, they introduce the entire spectrum of drive solutions available and their main applications. A special aspect is the combination of multiple drives to form a drive system, as well as the integration of drives into automation solutions. In simple and clear language, and supported with many diagrams, complex relationships are described and presented in an easy-to-understand way. The authors deliberately avoid a comprehensive mathematical treatment of their subject and instead focus on a coherent description of the active principles and relationships. As a result, the reader will be in a position to understand electrical drives as a whole and to solve drive-related problems in everyday professional life.