AS NZS 4024.2804:2021 pdf free download – Safety of machinery Part 2804: Safety-related sensors used for the protection of persons

AS NZS 4024.2804:2021 pdf free download – Safety of machinery Part 2804: Safety-related sensors used for the protection of persons.
This generic standard only applies ii
— protection of persons Is to be performed by using sensors, and
– standards for functional safety of electrical control systems address sensor(s) as subsystem or subsystem element, and
— product specific sensor standards (e.g. IEC 61496 (all parts). IEC 60947-5-2) do not contain all necessary provisions, or product specific sensor standards are not developed.
The approach of examination of systematic capabilities by using different safety related sensor standards is described in Annex A,
The requirements and methods within this document are limited to the purpose of protection of persons
— by detection of potentially hazardous objects.
— by detection of a body, parts of a body and objects associated to parts of a body entering a hazardous area, or
— by classification respective discrimination of these against other objects.
NOTE I Application 01 SRSSRSS in public can require deteclirig not only 04 persons, but also their aesocieted equipment, for e*ample wheelchairs, walking sticks or infusion stands
Performance classes of sensors and sensor systems are defined in accordance with existing functional safety standards (e.g. IEC 62061, IEC 61508 (all parts), and ISO 13849 (all parts)).
NOTE 2 There will he no definitIons of or interconnectIons to the types as defined in IEC 61496-1 withIn this document to senplify and prevent misue.. Swnplification for end users is actueved by correlation to existing Pt., 511 or SI1.
Special attention is given to the sensing function and dependability of the detection capability. Environmental influences and tests for indoor and outdoor use are defined which influence the sensing function and dependability of the detection capability.
NOTE 3 Environmental influences. the classification d lest pescedures are primarily specified in accordance with generic environmental standards More specific requirements and tests we onty descnbed In aês.nc. of reapecbve standards.
This document can be relevant to applications other than those for the protection of persons in industries, for example, for the protection of persons in public like agriculture or metro stations.
This document does not consider and address proven in use (e.g. processes or elements) as done in IEC 61508-2.
The simulation shall be verified by type test.
NOTE More detailed information for generation and application of simulation used for analysis of an SRSISRSS is given In Annex D.
5.5 Sensing zone(s)
The supplier shall provide information on the sensing zone(s) if applicable.
An object or objects in accordance with 5.8.2.2 and 5.8.2.3 at any position inside the sensing zone shall not result in a degradation of the detection capability inside the safety related zone or shall lead to appropriate safety related information at the output unit.
5.6 Safety related zone
The supplier shall provide information on relevant parameters of the safety related zone(s).
An object/objects in accordance with 5.8.2.2 and 5.8.2.3 at any position inside the safety related zone shall
— be detected, and
— lead to an appropriate safety related information at the output unit.
5.7 AutomatIon related zone
The supplier shall provide information on automation related zones, if applicable.
NOTE Automation related functions for purpose of quality control or process control can be performed inside an automation related zone.
For SRSISRSS performance classes C, D, E and F, an object or objects in accordance with 5.8.2.4 at any position inside the automation related zone
— shall not lead to a failure to danger of the safety related function, and
— can lead to an automation related information at the output unit.
5.8 Detection capability and dependability
5.8.1 General
The detection capability and the dependability of the detection capability of an SRSISRSS shall be analysed and tested taking into account the following.