The products’ reliability data (MTTF, MTTFd, B10, B10d…) gained from reliability tests under standard conditions can be downloaded in the SISTEMA format on Tools menu.
Actuators (pneumatic cylinders) are not taken into consideration in the calculation of performance levels (PL).
Since actuators are not an integral part of the control systems, they do not fall under EN ISO 13849-1 requirements. Manufacturers are, however, required to integrate the risks related to a failure of the actuator into their risk evaluation (EN ISO 14121 and EN ISO 12100).
(Safety Integrity Software Tool for the Evaluation of Machine Applications)
SISTEMA software available for download at www.dguv.de/ifa/en