Protective devices

Protective devices do not prevent access or entry into the machine's danger zone, but safely shut down the hazardous movements when the protective device is activated. Such protective devices may include, for example, light barriers, light curtains, scanners, pressure-sensitive mats or two-hand control devices.

Protection against unexpected start-up/restart of a machine

Two-hand control devices prevent injuries to hands or other body parts. The machine function/control command can only be triggered by using both hands, which are in a safe position during this operation.

Standards for protective devices

Standard	Title
EN IEC 61496-1	Safety of machinery Electrosensitive protective equipment - Part 1: General requirements and tests
EN IEC 61496-2	Safety of machinery Electrosensitive protective equipment - Part 2: Particular requirements for equipment using active opto-electronic protective devices
EN IEC 61496-3	Safety of machinery Electrosensitive protective equipment - Part 3: Particular requirements for active opto-electronic protective devices responsive to diffuse reflection (AOPDDR)
EN ISO 13855	Safety of machinery Positioning of safeguards with respect to the approach speeds of parts of the human body
EN ISO 13851	Safety of machinery Two-hand control devices - Principles for design and selection
EN ISO 13856-1/-2/-3	Safety of machinery - Pressure-sensitive protective devices General principles for design and testing of Part 1: Pressure-sensitive mats and pressure-sensitive floors Part 2: Pressure-sensitive edges and pressure-sensitive bars Part 3: Pressure sensitive bumpers, plates, wires and similar devices

Would you like further information? Read more in Chapter 4.3! The Safety Compendium contains the latest knowledge on machinery safety.

Safety Compendium

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