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EN ISO 11161
Safety of Integrated Manufacturing Systems—
Basic Requirements.
This standard was published in its revised form in 2007. It was significantly updated making it very useful for contemporary integrated machinery.
EN ISO 13849-1:2008 Safety related parts of control systems—Pt 1: General principles for design
This standard is the result of the significant revision of the old EN 954-1 (which is due for withdrawal at the end of 2011). It introduced many new aspects for Functional Safety of control systems. The term “PL” (Performance Level) is used to describe the level of integrity of a system or a subsystem.
It is available as an alternative to IEC/EN 62061 (see later). Note that EN ISO 13849-1 covers all technologies of control system whereas IEC/EN 62061 only covers electrical technology.
EN ISO 13849-1 is intended to provide a direct transition path from the categories of the previous EN 954-1. It has a relatively simple methodology compared to IEC/EN 62061 but this is at the expense of some constraints and restrictions. Either the revised ISO/EN 13849-1 or IEC/EN 62061 can be applied to machinery electrical safety related systems and the user should choose whichever one is best suited to their needs but EN ISO 13849-1 is often preferred when transitioning from Categories.
Note: Recent to the time of publication of this text, CEN (European Committee for Standardization) announced that the final date for presumption of conformity of EN 954-1 will be extended to the end of 2011 to facilitate transition to the later standards. This replaces the original date of December 29, 2009.
For the latest information on the use and status of EN 954-1 visit: http://discover.rockwellautomation.com/EN_Safety_Solutions.aspx. In the meantime it is advised that the extension of the transition period is used to move over to the use of the later standards (EN ISO 13849-1 or IEC/EN 62061) in a timely manner.
EN ISO 13849-2
Safety related parts of control systems—Pt 2: Validation
This standard provides details for validation of safety related parts of control systems. It has annexes that give details safety components, principles and fault exclusion.
EN ISO 13850
Emergency Stop devices, functional aspects—Principles for design.
Provides design principles and requirements.
ISO 13851 (EN 574)
Two-hand control devices—Functional aspects—Principles for design.
Provides requirements and guidance on the design and selection of two-hand control devices, including the prevention of defeat and the avoidance of faults.
EN ISO 13857
Safety distances to prevent danger zones being reached by the upper and lower limbs.
Provides data for calculation of safe aperture sizes and positioning for guards, etc.
ISO 13854 (EN 349)
Minimum distances to avoid crushing parts of the human body.
Provides data for calculation of safe gaps between moving parts, etc.
ISO 13855 (EN 999)
The positioning of protective equipment in respect to approach speeds of parts of the human body.
Provides methods for designers to calculate the minimum safety distances from a hazard for specific safety devices, in particular for electrosensitive devices (e.g., light curtains), pressure sensitive mats/floors and two-hand controls. It contains a principle for the positioning of safety devices based on approach speed and machine stopping time that can reasonably be extrapolated to cover interlocked guard doors without guard locking.
ISO 13856-1 (EN 1760-1)
Pressure Sensitive Safety Devices—Pt 1: Mats & Floors.
Provides requirements and test procedures.
ISO 13856-2 (EN 1760-2)
Pressure Sensitive Safety Devices—Pt 2: Edges & Bars.
Provides requirements and test procedures
ISO 14118 (EN 1037)
Prevention of unexpected start-up—Isolation and energy dissipation
Defines measures aimed at isolating machines from power supplies and dissipating stored energy to prevent unexpected machine startup and allow safe intervention with machinery.
ISO 14119 (EN 1088)
Interlocking devices associated with guards—Principles for design and selection.
Provides principles for the design and selection of interlocking devices associated with guards.
In order to verify mechanical switches it refers to IEC 60947-5-1— Low voltage switch gear—Pt 5: Control circuit devices and switching elements—Section 1: Electromechanical control circuit devices.
In order to verify non-mechanical switches it refers to IEC 60947-5-3—Particular requirements for proximity devices with defined behavior under fault conditions.
ISO 14120 (EN 953)
General Requirements for the Design and Construction of Guards.
Provides definitions, descriptions and design requirements for fixed and movable guards.