Extension to my answer below (unfortunately I cannot edit my reply text anymore): Another option as safety relay is the Phoenix Contact compact safety relay PSR-MS35-1NO-24DC-SC - 2904953 with following specification "Safety relay for emergency stop and safety doors up to SILCL 3, Cat. 4, PL e, 1 or 2-channel operation, manual, monitored start, cross-circuit detection, 1 enabling current path, US = 24 V DC, fixed screw terminal block" and the related scheme Alternatively Phoenix Contact compact safety relay PSR-MC38-2NO-1DO-24DC-SC - 1009831 with following specification "Safety relay for emergency stop, safety doors and light grids up to SILCL 3, Cat. 4, PL e, 1- or 2-channel operation, automatic or manual, monitored start, 2 enabling current paths, 1 signal output, TBUS interface, US = 24 V DC, pluggable screw terminal block" including related scheme
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