BERTHOLD TECHNOLOGIES LB 480 - 7.11 Functional Safety Data Sheet LB 480

54733-10BA2L
1 – 104 02.2017
7 Functional Safety Volume 1
7.11 Functional Safety Data Sheet LB 480
7.11.1 SIL 2 in System Architecture 1oo1 (1-channel)
*) The error response time is the time between an error is detected until the moment
the error current (<3.6mA or >21mA) is set.
In a cascade, the values for PFD and PFH must be multiplied with
the number of detectors.
Parameter Value
Protective function - Limit level measurement
- Level measurement
- Density measurement
SIL SIL 2 with one detector LB 480
(SIL2 SC3 FT0)
HFT 0
Device type B
SFF 92%
MTTR, MRT 72h
sd 0 FIT
su 0 FIT
dd 2450 FIT
du 210 FIT
tot 2660 FIT
PFDavg for T1 = 1 year <1.12E-03
PFDavg for T1 = 2 years <2.04E-03
PFDavg for T1 = 5 years <4.79E-03
PFDavg for T1 = 10 years <9.39E-03
PFH <2.11E-07 1/h
MTBF >42 years
Diagnostic test interval <180s
Operating mode Low Demand or High Demand
Maximale Demand Rate = Diagnostic test interval * 100
DC 95%
Error response time* 0.5s