6
Version No. V3R0
Safety Manual
9116 UniverSal converter
For RTD and linear resistance input sensors, cable resistances of up to 50
W
per wire can be
compensated if 3- or 4-wire connection is configured.
For thermocouple sensors, cold junction temperature errors can be compensated, either by an
internally mounted temperature sensor, or by an accessory connector with a built-in temperature
sensor. The selection of CJC measurement must be done and verified by the end user.
6 functional specification of the non-safety functions
The status relay (terminal 33 and 34), error signal on power rail (terminal 91) and LED outputs
are not suitable for use in any Safety Instrumented Function.
7 Safety parameters
RTD, TC, LinR and Potentiometer input, Current output
Probability of dangerous Failure per Hour (PFH)
4.30E-08
Note
1
Probability of failure on demand (PFD) -
1 year proof test interval
2.82E-04
Proof test interval (10% of loop PFD)
4 years
Safe Failure Fraction
93%
RTD, TC, LinR and Potentiometer 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
4.03E-04
Proof test interval (10% of loop PFD)
3 years
Safe Failure Fraction
90%
Voltage input, Current output
Probability of dangerous Failure per Hour (PFH)
5.60E-08
Note
1
Probability of failure on demand (PFD) -
1 year proof test interval
3.66E-04
Proof test interval (10% of loop PFD)
3 years
Safe Failure Fraction
93%
Voltage input, Relay output
Probability of dangerous Failure per Hour (PFH)
7.60E-08
Note
1
Probability of failure on demand (PFD) -
1 year proof test interval
4.89E-04
Proof test interval (10% of loop PFD)
2 years
Safe Failure Fraction
91%