Harmonized European Standards - Siemens SINUMERIK 840D sl Function Manual

Regulations and Standards
1.2 Safety of machinery in Europe
1.2.2

Harmonized European standards

The two Standards Organizations CEN (Comité Européen de Normalisation) and
CENELEC (Comité Européen de Normalisation Électrotechnique), mandated by
the EU Commission, drew-up harmonized European Standards in order to pre-
cisely specify the requirements of the EU Directives for a specific product. These
Standards (EN Standards) are published in the Official Journal of the European
Communities and must be included in domestic standards without any revisions.
These are used to fulfill the basic health and safety requirements and the protec-
tive goals specified in Annex I of the Machinery Directive.
When the harmonized Standards are complied with, then there is an "automatic
assumption" that the Directive is fulfilled. This means that the manufacturer may
then assume that he has complied with the safety aspects of the Directive under
the assumption that they are also handled in that particular Standard. However, not
every European Standard is harmonized in this sense. The listing in the Official
European Journal is decisive.
The European Standards for Safety of Machines is hierarchically structured as fol-
lows:
S A standards (basic standards)
S B standards (group standards)
S C standards (product standards)
Regarding type A standards/basic standards
A Standards include basic terminology and definitions that are applicable for all
machines. This includes EN ISO 12100 (previously EN 292) "Safety of Machines,
Basic Terminology, General Design Principles".
A Standards primarily address those bodies setting the B and C Standards. How-
ever, the techniques documented there regarding minimizing risks can also be
helpful to manufacturers if there are no applicable C Standards.
Regarding type B standards/group standards
B Standards include all Standards with safety-related statements that can involve
several machine types.
B Standards also primarily address those bodies setting C Standards. However,
they can also be helpful for manufacturers when designing and constructing a ma-
chine if no C Standards apply.
For B Standards, an additional sub-division is made - and more precisely as fol-
lows:
– Type B1 standards for higher-level safety aspects, e.g. basic ergonomic
principles, safety clearances from hazards, minimum clearances to avoid
crushing parts of the body.
– Type B2 standards for protective safety devices are defined for various ma-
chine types – e.g. Emergency Stop devices, two-hand operating circuits,
interlocking elements, contactless protective devices, safety-related parts of
controls.
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
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