Dual-Channel Safety Application, Duration Of Use: 20 Years; Table 15: Safety Parameters For Dual-Channel Safety Application - 20 Years - WAGO 750 Manual

30 Device Description
3.6.6.2

Dual-Channel Safety Application, Duration of Use: 20 Years

Table 15: Safety Parameters for Dual-Channel Safety Application – 20 Years
Maximum safety integrity level
per IEC 62061
Maximum safety integrity level
per IEC 61508
Maximum performance level
per ISO 13849-1
Duration of use
Probability of failure
PFD,* duration of use:
20 years (low demand
mode) (IEC 61508)
Probability of failure
PFH,* duration of use:
20 years (high demand
mode) (IEC 61508)
Hardware fault tolerance HFT with dual-channel
application (IEC 61508/ ISO 13849-1)
DC (Diagnostic Coverage Level)
AVG
MTTFd (Mean Time To Dangerous Failure)
*)
PFD: Probability of Failure on Demand
PFH: Probability of Dangerous Failure per Hour
Manual
Version 1.0.0, valid from HW/SW Version 01/01
753-661/000-004 4FDI 24V PROFIsafe
for 1 dual-channel
input (input to
fieldbus)
for 1 dual-channel
input (input to
fieldbus)
WAGO I/O System 750
SIL 3
SIL 3
Cat. 4/PL e
20 years
2.58 × 10 (2.58 % of the total
−5
PFD of 10 at SIL3)
−3
2.97 × 10 (0.30 % of the total
−10
PFH of 10 at SIL3)
−7
1 (1 error in the application
does not yet lead to a failure of
the safety equipment)
96 %
> 100 years