UL Standard for Safety Electro-Sensitive Protective Equipment, Part 2: Particular Requirements for Equipment Using Active Opto-Electronic Protective Devices (AOPDs) First Edition; Reprint with revisions through and including February 27, 2007
1 Scope
This clause of part 1 is replaced by the following
This part of IEC 61496 specifies requirements for the design，construction and testing of E
PROTECTIVE EQUIPMENT(ESPE)for the safeguarding of machinery，employing ACTIVE OPTO-ELECTRONIC PROTECTIVE
DEVICES(AOPDS)for the sensing function Special attention is directed to features that ensure an appropriate
safety—related performance is achieved An ESPE may include optional safety—related functions，the
requirements for which are given in annex A of part 1
This part does not specify the dimensions or configurations of the detection zone and its disposition in
relation to hazardous parts for any particular application，nor what constitutes a hazardous state of any
machine It is restricted to the functioning of the ESPE and how it interfaces with the machine
Excluded frOm this part ere AOPDS employing radiation at wavelengths outside the range 400 nm 10 1 500
nm
This part may be relevant to applications other than those for the protection of persons，for example the
protection of machine ry or products from mechanical damage In those applications additionaI
requirements may be necessary，for example when the materials that are to be recognized by the sensing
function have different properties from those of persons
This part does not deal with EMC emission requirements
2 NOrmative references
This clause of part 1 is applicable except as foIlows
Additiona』reference：
lEC 60825-1：1993
Safety of laser products—Pan 1一Equipment classification．requirements and user~guide
2．1 DV DC Deletion
Delete the reference to lEC 60825：1993．
3 Definitions
NOTE—The index at the end of this standard lists，in alphabetical order，the terms and acronyms defined in
clause 3 and indicates where they are used in the text
This clause of part 1 is applicable except as follows
Additiona』definitions；
3 201 active opto-electronic protective device(AOPD)A device whose sensing function is
performed by opto—electronic emitting and receiving elements detecting the interruption of optical
radiations generated，within the device，by an opaque object present in the specified DETECTION ZONE
Copyright．by the UndenrriLers Laboral~ories]nc
Mort Sep 06 08：00：11 2004