Transition; Safety Level - GE RSTi-EP Functional Safety Manual

3.3 Transition

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)
GFK-2956A
Transition Diagram
November 2017
Chapter3. System Overview
11