Information Of Risk Analysis And Risk Assessment - BONFIGLIOLI Agile Applications Manual

4 Information of Risk Analysis and Risk Assessment

According to the Machinery Directive 2006/42/EC, the manufacturer of a machine is obliged to carry out
a risk analysis in order to identify the hazards related to the machine.
The Standard EN 12100 – Safety of machinery - General principles for design - Risk assessment and
risk reduction describes the information required for risk assessment.
Risk assessment is effected according to the following criteria:
 degree of injury (serious/minor)
 frequency or duration of stay (frequent/seldom)
 possibilities of avoidance (hardly possible/possible)
For defined risks the Standards EN ISO 13849-1, IEC 61508 or EN 954-1 can be used to accomplish a
correct classification into Safety category, SIL (Safety Integrated Level) or PL (Performance Level).
These standards contain design principles for safety-relevant parts of control systems.
In the case of the safety function "Safe Torque Off", the risk assessment must consider the fact that
the motor will coast to a standstill in the case of an error. Depending on the application, a mechanical
brake may be required.
Responsibility:
The Manufacturer shall be responsible for the safety of the machine.
 risk analysis of hazards originating from the machine
 measures for reduction and elimination of the risks
 documentation of residual risk from the point of view of the manufacturer

selection of suitable controller, installation of protective equipment, ergonomics, documenta-
tion, warning of remaining risks
The operator of the machine is responsible for the safety of the application.
 risk analysis of hazards originating from the use of the machine
 documentation of residual risk from the point of view of the operator
 safe operation and protection of operating staff (barriers, instruction of operating staff, etc.)

Selection of safety function:
 Risk analysis and risk assessment for machine (EN 12100)

Risk reduction by machine design
 If not possible by design: risk reduction by protective equipment
 Identification of safety requirements
Selection of category of safety function

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