4 Project planning
4.1 Manufacturer of the machine
DANGER
H
azard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
Use of the safety system requires a risk assessment. Check whether additional
protective measures are required.
b
Comply with the applicable national regulations derived from the application (e.g.,
work safety regulations, safety rules, or other relevant safety guidelines).
The safety system was developed under consideration of typical application cases. A
par
tial safety function can be implemented with the safety system in these application
cases. The manufacturer must check whether the safety system is suitable for its spe‐
cific application case (risk assessment).
If the thorough check shows that the safety system is not suitable for the specific appli‐
cation case, the safety system can be used as a basis for an individualized develop‐
ment. This case will not be considered further in this document.
In any event, additional work is necessary for the safety system to be used, e.g., subse‐
quent configuration of the safety controller.
The manufacturer has the following duties:
b
Performing a risk assessment in accordance with ISO 12100
b
Verifying safety functions that are not part of this safety system
b
Validating all safety functions
b
Integrating the individual components in accordance with the appropriate stan‐
dards
b
Please note that C standards have priority compared to statements about this
safety system
4.1.1 Calculating the performance level
The file provided for SISTEMA can be used to calculate the performance level achieved.
It is nece
ssary to enter the values of the components actually used and to define the
measures taken to protect against failures with the same cause.
The manufacturer of the machine must decide which measures are to be taken against
failures with the same cause in the case of subsystems they have developed. These
measures must be selected in the SISTEMA project file for each user-defined subsys‐
tem. An overall result of 65 must be achieved at the very least.
WARNING
Certain indicators for the individual components were used as the basis for calculating
the values for the subsystems. Accordingly, the subsystems are only valid if the selected
components of the safety system meet all requirements, see "Additional components
required", page 12.
During the development of the safety system, certain measures against common-cause
f
aults were implemented or defined. Some of these measures must be taken into
account during implementation, see "General requirements", page 24.
PROJECT PLANNING 4
8020941/12O9/2019-08-05 | SICK O P E R A T I N G I N S T R U C T I O N S | Safe Linear Positioning
17
Subject to change without notice
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