and 7.14PART 1

Specification of the safety requirements for safety-related E/E/PE systems

7.10 PART 1

Installation, commissioning and safety validation of E/E/PE safety-related systems

7.13 and 7.14 PART 1

Operation and maintenance, modification and retrofit, decommissioning or disposal of E/E/PE safety-related systems

7.15 to 7.17 PART 1

Guidelines on the application of

Parts 2 and 3

Extract from DIN EN 61508-1, overall framework of the safety assessment in accordance with EN 61508.

Overall framework of the IEC 61508 series of standards.

13 Overall safety

validation 10 E/E/PE safety-related systems

Realisation (see E/E/PE system

safety lifecycle) 9 E/E/PE system safety requirements

specification 5 Overall safety requirements allocation

4 Overall safety

requirements 3 Hazard and risk analysis

2 Overall scope

definition 1 Concept

6 Overall operation and maintenance planning Overall planning

7 Overall safety validation planning

8

Overall installation and commissioning planning

12 Overall installation and commissioning

14 Overall operation, maintenance and repair

15 Overall modification

and retrofit Back to appropriate overall safety lifecycle phase

11 Other risk reduction

measures Specification and realisation

2.4.3.12 EN 61326-3

Standard Harmonised Title

EN 61326-3 Part 1 and 2:2008

No Electrical equipment for measurement, control and laboratory use – EMC requirements

With the release of EN 61326-3-1 and EN 61326-3-2, since 2008 there have been two standards providing information on immunity requirements in respect of the EMC level on safety devices. Both parts have been specifi ed with different immunity requirements.

Part EN 61326-3-1 is the general section with more stringent requirements. This part was drawn up with a particular view towards mechanical engineering.

In contrast, part EN 61326-3-2 was written with a view towards the process industry and the immunity requirements are signifi cantly lower. In engineering, therefore, it should always be ensured that the test

requirements in accordance with EN 61326-3-1 are met as a minimum. As the origin of both these standards is still very recent and there are no fore-runners to refer back to, it will still be some time before they are refl ected in the relevant device certifi -cates. In general, it should be noted that product or sector standards also set EMC requirements, but these are mostly below the requirements stated in EN 61326-3-1.

Standard Harmonised Title associated with guards.

Principles for design and selection

EN 1088 was published back in 1995. The 2007 amendment is just a fi rst step towards the new version and unifi cation with ISO 14119.

The purpose of the standard is to specify exact requirements to improve provisions for reducing the ability of the machine operator to defeat safety equipment. Investigations have shown that

opera-tors often attempt to defeat the safety function of an interlocking guard by defeating the interlock. The ability to defeat safety equipment can mainly be attributed to defi ciencies in the machine design.

2.4.4 Product standards 2.4.4.1 EN 1088 and ISO 14119

2.4.4.2 EN 61496 and IEC/TS 62046

Standard Harmonised Title

IEC/TS 62046:2008 No Safety of machinery

Application of protective equipment to detect the presence of persons

EN 61496-1:2010 Yes Safety of machinery

Electrosensitive protective equipment – Part 1:

General requirements and tests IEC 61496-2:2006

CLC/TS 61496-2:2006:

No Safety of machinery

Electrosensitive protective equipment – Part 2:

Particular requirements for equipment using active optoelectronic protective devices (AOPDs) CLC/TS 61496-3:2008:

replaces EN 61496-3:2003

No Safety of machinery

Electrosensitive protective equipment – Part 2:

Particular requirements for active optoelectronic protective devices responsive to diffuse refl ection (AOPDDR)

While the 61496 series describes product-specifi c requirements of electrosensitive protective equip-ment, IEC/TS 62046 focuses on the selection and measurement of electrosensitive protective equipment such as light beam devices, light grids or scanners. As such, it is one of the key standards for machine builders when it comes to designing machine access areas and safeguarding material channels.

The EN 61496 series of standards considers electrosensitive protective equipment. This includes devices such as light grids, laser scanners, light beam devices, safe camera systems and other sensors, which can all be used for non-contact protection. As EN 61496 is a product standard for safety components, it is only relevant for the typical user if the safety components he has used are intended to conform to these standards.

2.4.4.3 EN 61800-5-2

The non-harmonised EN 61800-5-2 is aimed at both drive manufacturers and users. It deals with the issue of drive-based safety, but without specify-ing any requirements regardspecify-ing safety-related suitability. No safety level is established, nor is there any defi nite hazard or risk evaluation. Instead, the standard describes mechanisms and safety func-tions of drives in an application environment, and how these are verifi ed and planned within the drive’s lifecycle. Technologically, the standard is based on EN 61508, even though proximity with EN ISO 13849-1 might have been anticipated, given the ever-present mechanical aspect of the drives.

Manufacturers of safe drives focus on EN 61800-5-2.

Standard Harmonised Title

EN 61800-5-2:2007 No Adjustable speed electrical power drive systems Part 5-2:

Safety requirements. Functional

2.4.5 Application standards

2.4.5.1 EN ISO 11161 Integrated manufacturing systems

Standard Harmonised Title

EN ISO 11161:2010 No Safety of machinery

Integrated manufacturing systems – Basic requirements

This standard deals with the safety aspects when assembling machines and components into a manufacturing system (IMS). It does not deal with the requirements of the individual components and machines. The standard is of particular interest to

operators and system integrators who operate or design machine pools and plants incorporating machines and components. This standard should be applied in close co-operation with EN ISO 12100.

2.4.5.2 NFPA 79

Standard Harmonised Title

NFPA 79:2008 No Industrial machinery

This standard is mainly important for the

US market, though it may also be applied in Asia.

The standard is concerned with the safe design, operation and inspection of industrial machinery.