15 Appendix
Term/abbreviation Description
SIL Safety integrity level. Discrete levels for defining the
requirements for the safety integrity of safety functions in
accordance with IEC 61508, EN 62061 and EN ISO 13849.
SILCL Maximum SIL that can be required from a sub-system.
SS1 Safe stop 1 in accordance with EN 61800-5-2.
STO Safe torque off in accordance with EN 61800-5-2.
T Duration of use in accordance with EN ISO 13849-1.
Product manual BL 4000-C Page 265 of 298
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