Failure Category Sil 2 / Sil 3; Periodic Proof Test Procedure; Procedures To Repair Or Replace The Product; Maintenance - PR 9106B Manual

Safety Manual

9. failure category SIl 2 / SIl 3

Fail Safe Detected
Fail Safe Undetected
Fail Dangerous Detected
Fail Dangerous Undetected
Fail Safe Detected
Fail Safe Undetected
Fail Dangerous Detected
Fail Dangerous Undetected

10. Periodic proof test procedure

Step action
1 Bypass the safety PLC or take other appropriate action to avoid a false trip
Connect a simulator identical to the input setup
2
Apply input value corresponding to 0/100% output range to each channel
3
Observe whether the output channel acts as expected
4
Restore the input terminals to full operation
5
Remove the bypass from the safety PLC or otherwise restore normal operation
6
This test will detect approximately 95% of possible "du" (dangerous undetected)
failures in the module.

11. Procedures to repair or replace the product

Any failures that are detected and that compromise functional safety should be
reported to the sales department at PR electronics A/S.
Repair of the module and replacement of circuit breakers must be done by PR
electronics A/S only.

12. maintenance

No maintenance required.
9106 HART ® transparent repeater
failure category
failure category
Version No. V1R0
failure rates (1/h) SIl 2
0.000E-0
1.65E-07
1.60E-07
4.10-08
failure rates (1/h) SIl 3
0.000E-0
3.05E-07
3.63E-07
1.10-08
7