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This is valid for drives with HWR >= 02.10.
| Device S748-772 | Operation mode | EN 13849-1 | EN 62061 | PFHD (1/h) | TM (Years) |
|---|---|---|---|---|---|
| STO1/2-Enable | single channel | PLd, Cat.3 | SIL CL2 | 7.05E-08 | 20 |
| STO1-Enable+STO2-Enable | dual channel | PLd, Cat.3 | SIL CL2 | 7.05E-08 | 20 |
| STO1-Enable+STO1-Status+ STO2-Enable+STO2-Status |
dual channel with periodic test | PLe, Cat.4 | SIL CL3 | 1.38E-09 | 20 |