Siemens SINAMICS G120 Function Manual page 216

Appendix
A.1 Standards and specifications
When the harmonized standards are observed, it is "automatically assumed" that the
Directive is fulfilled. As such, manufacturers can assume that they have observed the safety
aspects of the Directive under the assumption that these are also covered in this standard.
However, not every European Standard is harmonized in this sense. Key here is the listing in
the official journal of the commission of the European Parliament and Council.
The European standards regarding the safety of machines are structured in a hierarchical
manner as follows:
● A standards (basic standards)
● B standards (group standards)
● C standards (product standards)
Type A standards/basic standards
A standards include basic terminology and definitions relating to all types of machine. This
includes EN ISO 12100-1 (previously EN 292-1) "Safety of Machines, Basic Terminology,
General Design Principles."
A standards are aimed primarily at the bodies responsible for setting the B and C standards.
The measures specified here for minimizing risk, however, may also be useful for
manufacturers if no applicable C standards have been defined.
Type B standards/group standards
B standards cover all safety-related standards for various different machine types. B
standards are aimed primarily at the bodies responsible for setting C standards. They can
also be useful for manufacturers during the machine design and construction phases,
however, if no applicable C standards have been defined.
A further sub-division has been made for B standards:
● Type B1 standards for higher-level safety aspects (e.g. ergonomic principles, safety
● Type B2 standards for protective safety devices are defined for different machine types
Type C standards/product standards
C standards are product-specific standards (e.g. for machine tools, woodworking machines,
elevators, packaging machines, printing machines etc.). Product standards cover machine-
specific requirements. The requirements can, under certain circumstances, deviate from the
basic and group standards. Type C/product standards have the highest priority for machine
manufacturers who can assume that it fulfills the basic requirements of Annex I of the
Machinery Directive (automatic presumption of compliance). If no product standard has been
defined for a particular machine, type B standards can be applied when the machine is
constructed.
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clearances from sources of danger, minimum clearances to prevent parts of the body
from being crushed).
(e.g. EMERGENCY STOP devices, two-hand operating circuits, interlocking elements,
contactless protective devices, safety-related parts of controls).
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB