Approval/Certificate/Document of Conformity

Certificate / Certificat / Zertifikat /
Pulse Isolators
ACT20X-(2)HDI-(2)SDO-S/P
ACT20X-(2)HDI-(2)SDO-RNO-S/P
ACT20X-(2)HDI-(2)SDO-RNC-S/P
Weidmüller Interface
GmbH CO KG
Detmold, Germany
Systematic Integrity: SC 2 (SIL 2 Capable)
Random Integrity: SIL 2 Capable
Systematic Capability :
The product has met manufacturer design process requirements of Safety
Integrity Level (SIL) 2. These are intended to achieve sufficient integrity against
systematic errors of design by the manufacturer.
A Safety Instrumented Function (SIF) designed with these products must not
be used at a SIL level higher than the statement without “prior use” justification by
end user or diverse technology redundancy in the design.
Random Capability:
The SIL limit imposed by the Architectural Constraints must be met for each
subsystem.
Summary for the Pulse Isolators ACT20X-(2)HDI-(2)SDO-S/P,
ACT20X-(2)HDI-(2)SDO-RNO-S/P and ACT20X-(2)HDI-(2)SDO-RNC-S/P
Page 2 of 2
All failure rates are given in FIT=10
-9
/h
SIL Verification:
The Safety Integrity Level (SIL) of an entire Safety Instrumented Function (SIF)
must be verified via a calculation of PFD
AVG
considering redundant architectures,
proof test interval, proof test effectiveness, any automatic diagnostics, average
repair time and the specific failure rates of all products included in the SIF. Each
subsystem must be checked to assure compliance with minimum hardware fault
tolerance (HFT) requirements.
The following documents are mandatory parts of this certificate:
Weidmüller 0709-02-C R003 V2 R1 Assessment Report
Safety manual ACT20X-(2)HDI-(2)SDO-S V0.1
Safety manual ACT20X-(2)HDI-(2)SDO-RNx-S V0.1
l
Safe
l
DD
l
DU
l
Total
SFF DCD MTBF
Relay output 289.7 130.3 46.58 466 90% 74% 209 y
Opto output 275.5 135.6 36.18 447 92% 79% 217 y
Type B device
IEC 61508:2000 Failure rates
80 N Main St
Sellersville, PA 18960
T-061, V3R1