ABB AC500-S - Page 120

3)
- With readback contact: Max reachable (ISO 13849, IEC 62061, EN 954) ➔ without error exclusion (you
can reach higher levels up to PL e, SIL 3, Cat. 4 with error exclusion) MTTFd = High; DC = Medium
4)
- With readback contact: Max reachable SIL acc. IEC 61508 (Typ A components are required) ➔ without
error exclusion (you can reach higher level up to SIL 3 with error exclusion)
AC500-S Safety Modules
DX581-S digital safety input/output module > Circuit examples
30.03.2017AC500-S120