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Software Assistent SISTEMA
A Tool for the Easy Application of the Control Standard EN ISO 13849-1

The SISTEMA software utility provides developers and testers of safety related machine controls with comprehensive support in the evaluation of safety in the context of ISO 13849-1. The tool enables you to model the structure of the safety-related control components based upon the designated architectures, thereby permitting automated calculation of the reliability values with various levels of detail, including that of the attained Performance Level (PL).

Relevant parameters such as the risk parameters for determining the required performance level (PLr), the category of the SRP/CS, measures against common-cause failures (CCF) on multi channel systems, the average component quality (MTTFd) and the average test quality (DCavg) of components and blocks, are entered step by step in input dialogs. Each parameter change is reflected immediately on the user interface with its impact upon the entire system. The final results can be printed out in a summary document. 

IFA website with software download link

SISTEMA libraries
In SISTEMA, safety related parts of a control system (SRP/CS) are engineered from subsystems, blocks and elements - components for industrial use which can generally be purchased commercially - for which the user enters various values and information. Component manufacturers describe these data, for example in data sheets or in catalogues, but may also make them available to SISTEMA users in the form of SISTEMA libraries.
The benefit to the user: he can copy these data from a library into a SISTEMA project, quickly and without error.

Kollmorgen Sistema Library

Source:  IFA, Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung