1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA ICS 19-2002 (R2011)Diagrams, Device Designations and Symbols for Industrial Controls and SystemsNEMA Standards Publication ICS 19-2002 (R2011) Diagrams, Device Designations and Symbols for Industrial Controls and Systems Pub
2、lished by National Electrical Manufacturers Association 1300 North 17th Street Rosslyn, VA 22209 Copyright 2011 by the National Electrical Manufacturers Association. All rights including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the
3、 Protection of Literary and Artistic Works, and the International and Pan American Copyright Conventions. NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons engaged in the development and approval of the document at the time it was
4、developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. The National Electrical Manufacturers Association (NEMA) standards and guideline publications, of which the document contained herein is one, are dev
5、eloped through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. While NEMA administers the process and establishes rules to promote fairness in the develop
6、ment of consensus, it does not write the document and it does not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims liability for any personal injury, propert
7、y, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, expressed or implied, as to the accurac
8、y or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfil any of your particular purposes or needs. NEMA does not undertake to guarantee the performance of any individual manufacturer or sellers products or services b
9、y virtue of this standard or guide. In publishing and making this document available, NEMA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this
10、 document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this publication may be available from other
11、 sources, which the user may wish to consult for additional views or information not covered by this publication. NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect products, designs, or installations f
12、or safety or health purposes. Any certification or other statement of compliance with any health or safetyrelated information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. TABLE OF CONTENTS 1 GENERAL INFORMATION 1 1.1
13、Scope 1 1.2 Definitions . 1 2 DIAGRAM AND DRAWING IDENTIFICATION . 2 2.1 General . 2 2.2 Types of Diagrams or Drawings . 2 2.3 Forms of Diagrams or Drawings . 2 2.4 Other Drawings 3 3 WIRELESS CONNECTION DIAGRAMS 3 3.1 Symbols 3 3.2 Physical Arrangement 3 3.3 Device Designations 3 3.4 Terminal Marki
14、ngs . 3 3.5 Control-circuit Connections 3 3.6 Power-circuit Connections . 3 4 DESIGNATIONS . 3 4.1 Device . 3 4.2 Coil and Contact 4 5 GRAPHIC SYMBOLS 4 5.1 Definition and Use . 4 5.2 Symbol Principles 4 5.3 Uniformly Shaped Symbols 5 5.4 Organization of Symbols 5 6 TERMINAL MARKINGS 5 7 SOLID-STATE
15、 ELEMENTS OR DEVICES . 5 Foreword This Standards Publication was prepared by a technical committee of the NEMA Industrial Automation Control Products and Systems Section. It was approved in accordance with the bylaws of NEMA and supersedes the indicated NEMA Standards Publication. This Standards Pub
16、lication contains the information that was previously located in Clause 9 of ICS 1-1993, General Requirements, and is now being published separately as an informational guide. To continue to serve the best interests of users of Industrial Control and Systems equipment, the Industrial Automation Cont
17、rol Products and Systems Section is actively cooperating with other standardization organizations in the development of simple and more universal metrology practices. In this publication, the U.S. customary units are gradually being supplemented by those of the modernized metric system known as the
18、International Systems of Units (SI). This trans ition involves no changes in standard dimensions, tolerances, or performance specifications. NEMA Standards Publications are subject to periodic review. They are revised frequently to reflect user input and to meet changing conditions and technical pro
19、gress. Proposed revisions to this Standards Publication should be submitted to: Vice President, Technical Services National Electrical Manufacturers Association 1300 North 17th Street, Suite 1752 Rosslyn, Virginia 22209 This standards publication was developed by the Industrial Automation Control Pr
20、oducts and Systems Section. Section Approval of the standard does not necessarily imply that all section members voted for its approval or participated in its development. At the time it was approved, the Section was composed of the following members: ABB Inc. Raleigh, NC Bender Incorporated Coatesv
21、ille, PA Carlo Gavazzi Automation Components Buffalo Grove, IL Clarke Fire Protection Products, Inc. Cincinnati, OH Cooper Industries plc Houston, TX Cummins Inc. Minneapolis, MN Eaton Corporation Cleveland, OH Electro Switch Corporation Weymouth, MA Elliott Control Company, Ltd. Willis, TX Emerson
22、Electric Co. Saint Louis, MO GE Fairfield, CT Hubbell Incorporated Shelton, CT Joslyn Clark Controls, Inc. Lancaster, SC L-3 Communications Power Paragon Anaheim, CA Legrand North America West Hartford, CT Magnetek Material Handling Menomonee Falls, WI Master Control Systems, Inc. Lake Bluff, IL Met
23、ron, Inc. Denver, CO Minarik Drives South Beloit, IL Mitsubishi Electric Automation, Inc. Vernon Hills, IL Omron Electronics LLC Schaumburg, IL Phoenix Contact Middletown, PA Post Glover Resistors, Inc. Erlanger, KY Powerohm Resistors, Inc. Katy, TX Reliance Controls Corporation Racine, WI Rockwell
24、Automation Milwaukee, WI Russelectric, Inc. Hingham, MA Schneider Electric Palatine, IL SEW-Eurodrive, Inc. Lyman, SC Siemens Industry, Inc. Norcross, GA TE Connectivity Harrisburg, PA TIAX LLC Lexington, MA Tornatech Inc. Saint-Laurent, QC Toshiba International Corporation Houston, TX WAGO Corporat
25、ion Germantown, WI WEG Electric Corp. Duluth, GA Yaskawa America, Inc. Drives outline drawing: A drawing (base plan, floor plan, etc) which shows the physical space and mounting requirements of a piece of equipment. It shall be permitted to also indicate ventilation requirements and space provided f
26、or connections or the location to which connections are to be made. Graphic symbol: Symbols used on single-line (one-line) diagrams, on schematic or elementary diagrams, or, as applicable, on connection or wiring diagrams. Graphic symbols are corre lated with parts lists, descriptions, or instructio
27、ns by means of device designations. Interconnection diagram: A diagram that shows only the external connections between controllers and associated machinery and equipment. One-line diagram; single-line diagram: A diagram that shows, by means of single lines and graphic symbols, the course of an elec
28、trical circuit or circuits and the component devices or parts used therein. Physical relationships are usually disregarded. Process diagram; flow diagram: A conceptual diagram of the functional interrelationship of subsystems in block or pictorial form that shows process equipment such as machinery
29、for proper understanding. Schematic diagram; elementary diagram: A diagram that shows all circuits and device elements of an equipment and its associated apparatus or any clearly defined functional portion thereof. Such diagram emphasizes the device elements of a circuit and their functions as disti
30、nguished from the physical arrangement of the contactors, devices or elements of a circuit system. Circuits that function in a definite sequence are arranged to indicate that sequence. ICS 19-2002 (R2011) Page 2 Single-line diagram: See one-line diagram. Wiring diagram; connection diagram: A diagram
31、 that locates and identifies electrical devices, terminals, and interconnecting wiring in an assembly. A wiring diagram may be: In a form showing interconnecting wiring by lines or indicating interconnecting wiring only by terminal designations (wireless diagram), or a panel layout diagram showing t
32、he p hysical location of devices plus: a) The elementary wiring diagram, or b) A wiring table, or c) A computer wiring chart, or d) A machine command tape or cards The term does not include mechanical drawings, commonly referred to as wiring templates, wiring assemblies, cable assemblies, etc. Wirel
33、ess connection diagram: A diagram that shows the general physical arrangement of devices in a control equipment and connections between these devices, terminals, and terminal boards for outgoing connections to external apparatus. Connections are shown in tabular form and not by lines. An elementary
34、(or schematic) diagram may be included in the connection diagram. 2 DIAGRAM AND DRAWING IDENTIFICATION 2.1 General Diagrams and drawings shall be identified by one of the titles shown in Types of Diagrams or Drawings or by a combination of titles from Types of Diagrams or Drawings and titles from Fo
35、rms of Diagrams or Drawings, where applicable, but not solely by the titles given in Forms o f Diagrams or Drawings. 2.2 Types of Diagrams or Drawings Diagrams or drawings shall be permitted to be one of the following types: a) Wiring or connection diagram b) Construction diagram c) Control sequence
36、 diagram d) Control system diagram e) Controller diagram f) Dimension or outline drawing g) Illustrative diagram h) Interconnection diagram i) Logic diagram j) Process or flow diagram k) Schematic or elementary diagram l) Wireless connection 2.3 Forms of Diagrams or Drawings Diagrams or drawings sha
37、ll be permitted to take one or a com bination of the following forms: ICS 19-2002 (R2011) Page 3 a) Block diagram b) Logic diagram c) One-line or single line diagram 2.4 Other Drawings There may be additional drawings, such as conduit layout drawings, foundation drawings, etc. 3 WIRELESS CONNECTION
38、DIAGRAMS 3.1 Symbols Symbols for the devices shown in wireless connection diagrams shall be in accordance with Graphic Symbols found thereafter. Detailed device symbols shall be made up to represent the physical arrangement of the main component parts and of the terminals to which connections are ma
39、de. 3.2 Physical Arrangement The physical arrangement of devices in a wireless connection diagram shall correspond to the physical arrangement of the equipment. Physical groupings comprising control panel sections, auxiliary panels, sub-panels, overhead racks, resistor compartments, and the like sha
40、ll be so indicated and marked. See Figure 1 for an example of a wireless connection diagram. 3.3 Device Designations Each device in an equipment to which a connection is made shall be assigned a device designation which shall be in accordance with the requirements found in the Designations section.
41、These designations shall be distinct and there shall be no duplication of designations for the devices in any connection diagram. All designations shall correspond to those used in the elementary diagram. 3.4 Terminal Markings Each terminal of a device to which a connection is to be made shall be as
42、signed a distinct terminal marking. This marking shall correspond to the one used in the elementary diagram for designating the same circuit. 3.5 Control-circuit Connections Control-circuit connections shall be listed in the form of a wire table that shall consist of a single continuous column. This
43、 table shall list the circuit (terminal) numbers in numerical or alphabetical order, or both. Opposite each circuit (terminal) number shall be listed the designations of the devices to which the circuit will be connected. Short connections between terminals of the same device or between points on a
44、terminal board are sometimes drawn as lines. 3.6 Power-circuit Connections Power-circuit connections shall be drawn completely by lines or shall be included in a wire table. 4 DESIGNATIONS 4.1 Device Device designations are intended for use on diagrams in connection with graphic symbols to indicate
45、the function of the particular device. Device designations are based on the assignment of a letter or letters to each of the fundamental functions performed by the component devices of a complete control equipment. Suitable prefix numbers or letters, or both, and suffix letters may be added to the b
46、asic device designations to discriminate between devices performing similar functions. ICS 19-2002 (R2011) Page 4 Where two or more basic device designations are combined, the function designation is normally given first. For example, the first control relay initiating a jog function is designated ”
47、1JCR”. Device designations are given in alphabetical order in Table 1. Where alternate designations are shown, care shall be taken not to use the same designation for different kinds of devices on the same drawing. Prefix numbers are used with device designations to distinguish two or more devices h
48、aving the same function. These numbers are assigned in an orderly fashion in agreement wit h the order of the relaying or switching or functional sequence, where possible. 4.2 Coil and Contact Table 2 shows the designation used to identify the functions of coils and contacts on complex devices. They are not a part of the device designation. Where used in connection
