Current input, Current output
Probability of dangerous Failure per Hour (PFH) 4.20E-08
Note
1
Probability of failure on demand (PFD) -
1 year proof test interval
2.77E-04
Proof test interval (10% of loop PFD) 5 years
Safe Failure Fraction 95%
Current input, Relay output
Probability of dangerous Failure per Hour (PFH) 6.20E-08
Note
1
Probability of failure on demand (PFD) -
1 year proof test interval
4.00E-04
Proof test interval (10% of loop PFD) 3 years
Safe Failure Fraction 93%
Common Safety Parameters
Demand response time Signal input: < 0.5 seconds
Potentiometer and linear resistance
input < 0.65 seconds
Temperature input: < 1.1 seconds
Demand mode High
Demand rate 3000 seconds
Mean Time To Repair (MTTR) 24 hours
Diagnostic test interval 30 seconds
Hardware Fault Tolerance (HFT) 0
Component Type B
SIL capability SIL 2
Description of the “Safe State”, analogue output Output ≤ 3.6 mA or
Output ≥ 21 mA
Description of the “Safe State”, relay output Contact open (relay de-energized)
Relay lifetime (Note
2
) 100 000 times
Note
1
: The 9116 contains no lifetime limiting components, therefore the PFH figures are valid
for up to 12 years, according to IEC 61508.
Note
2
: The user must calculate the product lifetime with regard to the relay lifetime.
8 Hardware and software configuration
All configurations of software and hardware versions are fixed from factory, and cannot be
changed by end-user or reseller.
This manual only covers products labelled with the product version (or range of versions)
specified on the front page.
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