The way to a safe machine

EN ISO 12100-1 and -2
EN 1050/ ISO 14121 (type A)

• Determination of the limits of the machine (what is the intended purpose of the machine?)
• Identification of the hazards on the machine (exposing potential dangers)
• Risk assessment
• Risk estimation (damage extent x occurrence probability)
• Risk evaluation (risk reduction necessary)
• Decisions relating to the measures for risk reduction (through design measures, protective devices).

The EN 954-1/prEN ISO 13849-1 or EN IEC 62061 are used (type B1 standards) to suit the technology, risk classification and design.

Implementation: EN 954-1/prEN ISO 13849-1 Validation: EN ISO 13849-2		Implementation: EN IEC 62061 Validation: EN ISO 13849-2
Applied field: For non-complex programmable electronics as well as mechanical, hydraulic and pneumatic systems. Can only be used on a limited basis for complex electronic systems.		Applied field: For all electrical and electronic systems. Non-electrical systems are not covered.

Notes on the standards
prEN ISO 13849-1 is currently being revised and will replace EN 954-1 in the near future. Up until this point EN 954-1 will apply.

Application of the standards
Further safety-relevant B1 and B2 standards help with the implementation of the safety demands:

• EN 418/ISO 13850 (Safety of machinery – Emergency stop)
• EN 1088/ISO 14119 (Safety of machinery – Interlocking devices associated with guards)
• EN 574 (Safety of machinery – Two-hand control devices)
• EN IEC 61496 (Safety of machinery – Electro-sensitive protective equipment).

They are described in the EN IEC 60204-1 (type B1) standard.