GE RSTi-EP - Transition; Safety Level

Chapter3. System Overview
GFK-2956A November 2017 11
3.3 Transition
Transition Diagram
With the delay SIL module (EP-1922) switching off can be delayed by a defined time so that, for
example, a machine can be shut down in a controlled manner. The delay time can be set in four steps
between 0 and 60 seconds (corresponds to stop category 1 as per EN 60204).
3.4 Safety Level
Depending on the entire safety chain, the EP-19xx modules optimally achieve the following safety
levels:
• SIL3 (as per IEC 61508)
• SIL CL3 (as per IEC 62061)
• PLe (as per DIN EN ISO 13849-1)
• Cat. 4 (as per DIN EN ISO 13849)