Catalogs > Safety Products Catalog > Principles, Standards and Implementation > System Design According to ISO/EN 13849 and SISTEMA
System Design According to ISO/EN 13849 and SISTEMA
| SISTEMA Software PL Calculation Tool |  |
System Structure | |
Reliability Data | |
Methods of Data Determination | |
Diagnostic Coverage | |
Common-Cause Failure | |
Mission Time | |
| Systematic Faults | |
Fault Exclusion | |
Performance Level (PL) | |
Subsystem Design and Combinations | |
Validation | |
Machine Commissioning | |
At the system or machine commissioning stage, validation of the safety functions must be carried out in all operating modes and should cover all normal and foreseeable abnormal conditions. Combinations of inputs and sequences of operation must also be taken into consideration. This procedure is important because it is always necessary to check that the system is suitable for actual operational and environmental characteristics. Some of those characteristics may be different from the ones anticipated at the design stage.