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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 294 ISBN 0-7629-0345-7 Access Control System Units Copyright Underwriters Laboratories Inc. Provided by IHS under license with UL Not for ResaleNo reproduction or networking permitted withou
2、t license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Copyright Underwriters Laboratories Inc. Provided by IHS under license with UL Not for ResaleNo reproduction or networking permitted without license from IHS -,-,- UL C
3、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Underwriters Laboratories Inc. (UL) 333 Pfi ngsten Road Northbrook, IL 60062-2096 UL Standard for Safety for Access Control System Units, UL 294 Fifth Edition, Dated January 29, 1999 Revisions: Thi
4、s Standard contains revisions through and including August 15, 2005. SUMMARY OF TOPICS This revision is being issued to correct the ANSI information on the title page. No changes in requirements are involved. UL Standards for Safety are developed and maintained in the Standard Generalized Markup Lan
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7、ssued to correct an omission on the title page. The revisions dated August 15, 2005 include a reprinted title page (page1) for this Standard. As indicated on the title page (page 1), this UL Standard for Safety is an American National Standard. Attention is directed to the note on the title page of
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24、rnal use. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, fi gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and
25、 that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. New product submittals made prior to a specifi ed future effective date will be judged under all of the requirements in this Standard including those requirements with a specifi e
26、d future effective date, unless the applicant specifi cally requests that the product be judged under the current requirements. However, if AUGUST 15, 2005 UL 294tr2 Copyright Underwriters Laboratories Inc. Provided by IHS under license with UL Not for ResaleNo reproduction or networking permitted w
27、ithout license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL the applicant elects this option, it should be noted that compliance with all the requirements in this Standard will be required as a condition of continued Listin
28、g, Recognition, and Follow-Up Services after the effective date, and understanding of this should be signifi ed in writing. Copyright 2005 Underwriters Laboratories Inc. This Standard consists of pages dated as shown in the following checklist: PageDate 1-3 . . . . . . . . . . . . . . . . . . . . .
29、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . August 15, 2005 4-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . October 29, 2001 6 . . .
30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . August 15, 2005 7-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31、. . . . . . . . October 29, 2001 11-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . January 29, 1999 43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、 . . . . . . . . . . . . . . . . . . . . . . . . . . October 29, 2001 44-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . January 29, 1999 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . March 9, 2004 47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . January 29, 1999 48-48B. . . . . . . .
34、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . October 29, 2001 49-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Januar
35、y 29, 1999 67-72B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . October 29, 2001 73-86 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
36、. . . . . . . . . . . . . January 29, 1999 A1-A2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . January 29, 1999 AUGUST 15, 2005 UL 294tr3 Copyright Underwriters Laboratories Inc. Provided by IHS under li
37、cense with UL Not for ResaleNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 15, 2005 UL 294tr4 No Text on This Page Copyright Underwriters Laboratories Inc. Provid
38、ed by IHS under license with UL Not for ResaleNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 29, 1999 (Title Page Reprinted: August 15, 2005) 1 UL 294 Standard f
39、or Access Control System Units First Edition May, 1974 Second Edition September, 1980 Third Edition January, 1987 Fourth Edition June, 1994 Fifth Edition January 29, 1999 The most recent designation of ANSI/UL 294 as an American National Standard (ANSI) occurred on February 17, 2004. The ANSI approv
40、al for this standard does not include Appendix A. This ANSI/UL Standard for Safety, which consists of the Fifth Edition with revisions through August 15, 2005, is under continuous maintenance, whereby each revision is ANSI approved upon publication. Comments or proposals for revisions on any part of
41、 the Standard may be submitted to UL at any time. Written comments are to be sent to UL-Santa Clara Standards Department, 1655 Scott Boulevard, Santa Clara, CA, 95050. An effective date included as a note immediately following certain requirements is one established by Underwriters Laboratories Inc.
42、 Revisions of this Standard will be made by issuing revised or additional pages bearing their date of issue. A UL Standard is current only if it incorporates the most recently adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requiremen
43、ts. ISBN 0-7629-0345-7 COPYRIGHT 1974, 2005 UNDERWRITERS LABORATORIES INC. ANSI/UL 294-2004 Copyright Underwriters Laboratories Inc. Provided by IHS under license with UL Not for ResaleNo reproduction or networking permitted without license from IHS -,-,- UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F
44、URTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 15, 2005ACCESS CONTROL SYSTEM UNITS - UL 2942 No Text on This Page Copyright Underwriters Laboratories Inc. Provided by IHS under license with UL Not for ResaleNo reproduction or networking permitted without license from IHS -,-,-
45、 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 2 G
46、eneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 2.1 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47、 . . . . . .7 2.2 Units of measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 2.3 Undated references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48、 .8 2.4 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 3 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
49、. . . . . . . . . .8 4 Installation and Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 CONSTRUCTION ASSEMBLY 5 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .