SIGMATEK ST 151, Руководство пользователя

Страница: 39 / 48

S-DIAS STEPPER MOTOR OUTPUT STAGE ST 151
02.12.2019 Page 37
9.2 Performance Level e, Category 3 or SIL 3
– Safety-SPS
To meet the requirements of safety category 3, performance level "e" for EN ISO 13849-1
and SIL 3 according to EN 62061, an error-proof output of a safety PLC must be used. The
reason of category 3 here, is that cross-circuit detection between the two lines is not possi-
ble.