1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA ICS 5-2017Industrial Control and Systems: Control-Circuit and Pilot DevicesNEMA Standards Publication ICS 5-2017 Industrial Control and Systems: Control-Circuit and Pilot Devices Published by National Electrical Manufacturer
2、s Association 1300 North 17th Street, Suite 900 Rosslyn, Virginia 22209 www.nema.org 2017 by the National Electrical Manufacturers Association. All rights, including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Litera
3、ry and Artistic Works, and the International and Pan American copyright conventions. 2017 National Electrical Manufacturers Association NOTICE AND DISCLAIMER The information in this publication was considered technically sound by a consensus among persons engaged in its development at the time it wa
4、s approved. Consensus does not necessarily mean there was unanimous agreement among every person participating in the development process. The National Electrical Manufacturers Association (NEMA) standards and guideline publications, of which the document herein is one, are developed through a volun
5、tary 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. Although NEMA administers the process and establishes rules to promote fairness in the development of consensus, it does no
6、t write the documents, nor does it 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, property, or other damages of any natu
7、re, 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, express or implied, as to the accuracy or completeness of any information publish
8、ed herein, and disclaims and makes no warranty that the information in this document will fulfill any particular purpose(s) or need(s). NEMA does not undertake to guarantee the performance of any individual manufacturers or sellers products or services by virtue of this standard or guide. In publish
9、ing 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 document should rely on his or her own indepe
10、ndent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstance. Information and other standards on the topic covered by this publication may be available from other sources, which the user may wish to consult fo
11、r 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 for safety or health purposes. Any certification
12、 or other statement of compliance with any health- or safety-related information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. NEMA ICS 5-2017 Page i 2017 National Electrical Manufacturers Association CONTENTS Foreword
13、 v Part 1 General Standards for Control-Circuit and Pilot Devices . 1-1 1 General 1-1 2 Definitions 1-1 3 Classification . 1-3 4 Characteristics and Ratings 1-3 5 Product Marking, Installation, and Maintenance Information 1-5 6 Service and Storage Conditions 1-5 7 Construction 1-5 8 Performance Requ
14、irements and Tests . 1-5 9 Application . 1-9 Part 2 Industrial Control Relays 2-1 1 General 2-1 2 Definitions 2-1 3 Classification . 2-2 4 Characteristics and Ratings 2-3 5 Product Marking, Installation, and Maintenance Information 2-4 6 Service and Storage Conditions 2-4 7 Construction 2-4 8 Perfor
15、mance Requirements and Tests . 2-4 9 Application . 2-5 Part 3 Industrial Control Input Devices Actuated by Force, Temperature, or Pressure . 3-1 1 General 3-1 2 Definitions 3-1 3 Classification . 3-7 4 Characteristics and Ratings 3-7 5 Product Marking, Installation, and Maintenance Information 3-9 6
16、 Service and Storage Conditions 3-9 7 Construction 3-10 8 Performance Requirements and Tests . 3-10 9 Applications . 3-11 Part 4 Proximity Switches . A-1 NEMA ICS 5-2017 Page ii 2017 National Electrical Manufacturers Association Part 5 Pushbuttons, Selector Switches, Indicating Lights, and Pushbutto
17、n Stations . A-1 Part 6 Mechanical Control Circuit Devices with Normally Closed Contacts Having Direct Opening Action 6-1 1 General 6-1 2 Definitions 6-1 3 Classification . 6-1 4 Characteristics and Ratings 6-1 5 Product Marking, Installation, and Maintenance Information 6-2 6 Service and Storage Co
18、nditions 6-2 7 Construction 6-3 8 Performance and Tests . 6-3 9 Application . 6-5 Annex A Classification of Proximity Switches A-1 Annex B Typical Proximity Switch Specifications B-1 Annex C Programmable Logic Controllers (PLC) Compatibility . C-1 Annex D Additional Requirements for Proximity Switch
19、es . D-1 Annex E Additional Requirements for Proximity Switches Suitable for Use in Strong Magnetic Fields E-1 Annex F High-Pressure Power Wash Test Procedure for Self-Contained Control Circuit Devices . F-1 Table 1-4-1 Mechanical Switching Ratings and Test Values for AC Control-Circuit Contacts at
20、50 or 60 Hertz . 1-11 Table 1-4-2 Mechanical Switching Ratings and Test Values for DC Control-Circuit Contacts . 1-11 Table 1-4-3 Utilization Categories for Switching Elements . 1-12 Table 1-4-4 Ratings for AC Semiconductor Control-Circuit Switching Elements at 50 or 60 Hertz 1-12 Table 1-4-5 Rating
21、s for DC Semiconductor Control-Circuit Switching Elements 1-13 Table 1-4-6 Dry Reed Contact Characteristics 1-13 Table 1-7-1 Conductor Color in Multiconductor Cable 1-14 Table 1-8-1 DC Loads 1-14 Table 1-8-2 Verification of Making and Breaking Capabilities of Semiconductor Switching Elements under N
22、ormal Conditions of Use 1-15 Table 1-8-3 Verification of Making and Breaking Capabilities of Semiconductor Switching Elements under Abnormal Conditions of Use 1-16 Table 2-3-1 Contact Class Designations . 2-3 NEMA ICS 5-2017 Page iii 2017 National Electrical Manufacturers Association Table 2-4-1 Rat
23、ings of Coils for Control Relays and Time-Delay Relays . 2-3 Table 2-8-1 Conductor Sizes for Testing . 2-5 Table 3-8-1 Conductors for Testing . 3-11 Figure 1-4-1 Very Low Voltage and Current Values . 1-17 Figure 1-8-1 Recommended Test Circuit for Contacts . 1-18 Figure 1-8-2 Construction of Load for
24、 DC Contacts N and P . 1-18 Figure 1-8-3 Construction of Load for DC Contacts Q 1-19 Figure 1-8-4 Current/Time Limits for DC Contact . 1-20 Figure 1-8-5 Recommended Test Circuit for AC Switching Elements 1-21 Figure 1-9-1 Polarity 1-22 Figure 3-2-1 Maintained Contact Lever-Operated Limit Switch 3-2
25、Figure 3-2-2 Maintained Contact Plunger-Operated Limit Switch 3-2 Figure 3-2-3 Momentary Contact Lever-Operated Limit Switch . 3-3 Figure 3-2-4 Momentary Contact Lever-Operated Limit Switch . 3-3 Figure 3-9-1 Polarity 3-12 Figure 3-9-2 Different Voltage Sources . 3-13 Figure 3-9-3 Typical Slow-Motio
26、n Operation (Snap-Action Limit Switches) . 3-13 Figure 3-9-4 Cam for Fast-Motion Operation and Dwell Requirements 3-14 Figure 3-9-5 Actuator Travel . 3-15 Figure 3-9-6 Recommended Cam Angles 3-16 Figure 3-9-7(a) Nonreversing, Overriding Cam . 3-16 Figure 3-9-7(b) Reversing, Overriding Cam 3-17 Figur
27、e 3-9-7(c) Rotating Cam 3-17 Figure 3-9-8 Fork-Type Lever . 3-18 Figure 3-9-9 Offset Fork-Type Lever . 3-18 Figure 3-9-10 Plunger-Actuated Switches 3-19 Figure 3-9-11 Supplementary Actuators . 3-20 Figure 3-9-12(a) Location ConstraintAccidental Operation . 3-20 Figure 3-9-12(b) Location ConstraintAc
28、cessibility . 3-21 Figure 3-9-12(c) Location ConstraintCoolant 3-21 Figure 3-9-12(d) Location ConstraintMachining Chips 3-22 Figure 3-9-12(e) Location ConstraintExcessive Heat 3-22 Figure 3-9-13 Limit Switch Cover Positions 3-23 Figure 3-9-14 Seepage and Condensation Considerations . 3-23 Figure 3-9
29、-15 Sealing Fittings . 3-24 NEMA ICS 5-2017 Page iv 2017 National Electrical Manufacturers Association Figure 6-5-1 Device Marking for Direct Opening Contacts . 6-2 Figure 6-5-2 Electrical Diagram Symbol for Direct-Opening Contacts . 6-2 Figure 6-8-1 Verification of Robustness 6-5 Figure 6-8-2 Short
30、 Circuit Test Circuit 6-5 NEMA ICS 5-2017 Page v 2017 National Electrical Manufacturers Association 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
31、and supersedes the indicated NEMA standards publication. This standards publication supersedes ICS 5-2000 (R2005, R2010). This standards publication provides practical information concerning ratings, construction, test, performance, and manufacture of industrial control equipment. These standards ar
32、e used by the electrical industry to provide guidelines for the manufacture and proper application of reliable products and equipment and to promote the benefits of repetitive manufacturing and widespread product availability. NEMA standards represent the result of many years of research, investigat
33、ion, and experience by the members of NEMA, its predecessors, and its Sections and Committees. They have been developed through continuing consultation among manufacturers, users, and national engineering societies and have resulted in improved serviceability of electrical products with economies to
34、 manufacturers and users. One of the primary purposes of this standards publication is to encourage the production of reliable control equipment that, in itself, functions in accordance with these accepted standards. Some portions of these standards, such as electrical spacings and interrupting rati
35、ngs, have a direct bearing on safety; almost all of the items in this publication, when applied properly, contribute to safety in one way or another. Properly constructed industrial control equipment is, however, only one factor in minimizing the hazards that may be associated with the use of electr
36、icity. The reduction of hazard involves the joint efforts of the various equipment manufacturers, the system designer, the installer, and the user. Information is provided herein to assist users and others in the proper selection of control equipment. The industrial control manufacturer has limited
37、or no control over the following factors that are vital to a safe installation: a. Environmental conditions b. System design c. Equipment selection and application d. Installation e. Operating practices f. Maintenance This publication is not intended to instruct the user of control equipment with re
38、gard to these factors except insofar as suitable equipment to meet needs can be recognized in this publication and some application guidance is given. This standards publication is necessarily confined to defining the construction requirements for industrial control equipment and providing recommend
39、ations for proper selection for use under normal or certain specific conditions. Since any piece of industrial control equipment can be installed, operated, and maintained in such a manner that hazardous conditions may result, conformance with this publication does not by itself ensure a safe instal
40、lation. When, however, equipment conforming with these standards is properly selected and is installed in accordance with the National Electrical Codeand properly maintained, the hazards to persons and property will be reduced. NEMA ICS 5-2017 Page vi 2017 National Electrical Manufacturers Associati
41、on To continue to serve the best interests of users of industrial control and systems equipment, the Industrial Automation Control Products and Systems Section is actively cooperating with other standardization organizations in the development of simple and more universal metrology practices. In thi
42、s publication, the U.S. customary units are gradually being supplemented by those of the modernized metric system known as the International System of Units (SI). This transition involves no changes in standard dimensions, tolerances, or performance specifications. NEMA standards publications are su
43、bject to periodic review. They are revised frequently to reflect user input and meet changing conditions and technical progress. Proposed revisions to this standards publication should be submitted to: Senior Technical Director, Operations National Electrical Manufacturers Association 1300 North 17t
44、hStreet, Suite 900 Rosslyn, Virginia 22209 This standards publication was developed by the Industrial Automation Control Products 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 th
45、e time it was approved, the section was composed of the following members: ABB Inc. Carlo Gavazzi Automation Components Cooper Bussmann Cummins, Inc. Eaton Electrical, Inc. Electro Switch Corporation Emerson Electric Co. Everlite Hybrid Industries Inc. GE Hubbell Incorporated Joslyn Clark Controls,
46、Inc. L-3 Communications, Power Paragon Master Control Systems, Inc. Metron, Inc. Mitsubishi Electric Automation, Inc. Moeller Electric Corporation Omron Electronics LLC Phoenix Contact, Inc. Post Glover Resistors, Inc. Reliance Controls Corporation Rockwell Automation Russelectric, Inc. SEW-Eurodriv
47、e, Inc. Siemens Energy Inc. Schneider Electric USA Tornatech Inc. Toshiba International Corporation Tyco Electronics/AMP WAGO Corporation Yaskawa Electric America, Inc. Part 1 NEMA ICS 5-2017 General Standards Page 1-1 2017 National Electrical Manufacturers Association Part 1 General Standards for C
48、ontrol-Circuit and Pilot Devices 1 General 1.1 Referenced Standards In this NEMA standards publication, reference is made to the standards listed below. Copies are available from the indicated sources. National Electrical Manufacturers Association 1300 North 17th Street, Suite 900 Rosslyn, VA 22209
49、NEMA ICS 1-2000 Industrial Control and Systems: General Requirements NEMA ICS 1.1-1984 (R1998) Safety Guidelines for the Application, Installation, and Maintenance of Solid State Control ICS 1.3-1986 (R2001) Preventive Maintenance of Industrial Control and Systems Equipment ICS 6-1993 (R2001) Industrial Control and Systems: Enclosures Underwriters Laboratories Inc. 333 Pfingsten Road Northbrook, IL 60062 UL 310-1995 Electrical Quick-Connect Terminals UL 353-1994 Limit Controls UL 486E-1994 Equipment Wiring Terminals for Use With Aluminum and/or Copper Conductors
