ABB +Q957 사용자 설명서 - 페이지 14

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14 Introduction to the manual

Term

POUS

SIL

SILCL

STO

Description

Performance level. Levels a...e correspond to SIL (EN ISO 13849-1)

Prevention of unexpected start-up

Systematic capability (IEC 61508)

Safety integrity level (1...3) (IEC 61508)

Maximum SIL (level 1...3) that can be claimed for a safety function or subsystem

(IEC/EN 62061)

Safe torque off (IEC/EN 61800-5-2)

Proof test interval. Defines the probabilistic failure rate (PFH or PFD

function or subsystem. Performing a proof test at a maximum interval of T

to keep the SIL capability valid. The same interval must be followed to keep the PL

capability (EN ISO 13849) valid. Note that any T

as a guarantee or warranty.

) for the safety

avg

values given cannot be regarded

is required