ISO 13856-3:2013 pdf download.Safety of machinery一Pressure-sensitive protective devices一Part 3:General principles for design and testing of pressure-sensitive bumpers,plates, wires and similar devices.
This part of ISO 13856 establishes general principles and specifies requirements for the design and testing of those pressure-sensitive protective devices, with or without an external reset facility, that are not specified in either ISO 13856-1 or ISO 13856-2, and the majority of which are produced for specific applications and are not available as “off-the-shelf” items.
This part of ISO 13856 also gives specific requirements for the following pressure-sensitive protective devices:
a) pressure-sensitive bumpers;
b) pressure-sensitive plates;
c) pressure-sensitive wires (trip wires).
It deals with the design of a pressure-sensitive device with regard to safety and reliability rather than its suitability for particular applications.
NOTE 1 For the relationship between safety and reliability, see ISO 13 849-1:2006, 4.2.
NOTE 2 The machinery manufacturer and/or user is responsible for installing appropriate types oIprotective device based on a risk assessment.
It is not applicable to
— specifying the dimensions of pressure-sensitive protective devices in relation to any particular application, or
— stopping devices according to IEC 60204-1 used for the normal operation, including emergency stopping of machinery.
NOTE 3 Specific requirements for particular applications are intended to be set forth in relevant type-C standards (see ISO 12100 and Introduction).
Additional requirements can be necessary where pressure-sensitive protective devices are used in locations accessible to elderly or disabled people or children.
NOTE 4 While requirements are given for the immunity of the device to electromagnetic disturbances, these are not intended to cover all aspects of electromagnetic compatibility (EMC).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies
ISO 4413, Hydraulic fluid power — General rules and safety requirements for systems and their components
3.1
pressure-sensitive protective device
sensitive protective equipment of the “mechanically activated trip” type intended to detect the touch of a person or body part of a person and which can also act as impeding device
Note 1 to entry: A pressure-sensitive protective device consists of a sensor or sensors, which generates a signal when pressure is applied to part of its outer surface, and a control unit, which responds to the signal from the sensor and generates an output signal(s) to the control system of a machine.
Note 2 to entry: Pressure-sensitive protective devices can be used as tripping devices as well as presence-sensing devices, as mentioned in Iso 12100:2010, Note to 3.28.5. For presence-sensing devices, see also 4.2.6.2.
Note 3 to entry: For the definitions of sensitive protective equipment and impeding device, see ISO 12100:2010, 3.28.5 and 3.29, respectively.ISO 13856-3 pdf download.