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4.4 Safe parameterisation
The user is responsible for verifying the correctness of the configuration
parameters. (See section 14 Safe parameterisation - user responsibility).
Manual override may not be used for safety applications.
4.5 Installation in hazardous areas
The IECex Installation drawing, ATEX Installation drawing, INMETRO
Installation drawing and FM Installation drawing shall be followed if the
products are installed in hazardous areas.
5. Functional specification of the safety functions
Driver for the control of ON / OFF solenoids, acou stic alarms and LEDs.
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
Probability of dangerous Failure per
Hour (PFH)
Probability of failure on demand (PFD) -
1 year proof test interval
Proof test interval (10% of loop PFD)
Safe Failure Fraction
Demand response time
Demand mode
Demand rate
Mean Time To Repair (MTTR)
Diagnostic test interval
Hardware Fault Tolerance (HFT)
Component Type
SIL capability
Description of the "Safe State"
1
Note
: The 9203 contains no lifetime limiting components, therefore the PFH
figures are valid for up to 12 years, according to IEC 61508.
4
9203 Solenoid / Alarm Driver
Version No. V5R0
9203x1xx
4.30E-08
1
Note
2.73E-04
5 years
91%
<10 ms
High
1000 s
24 hours
10 seconds
0
B
SIL 2
De-energised
9203x2xx
4.60E-08
2.92E-04
4 years
91%
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