Hardware And Software Configuration; Failure Category; Periodic Proof Test Procedure; Procedures To Repair Or Replace The Product - PR electronics 9202 Serie Manual Del Usuario

1
Note : The 9202 contains no lifetime limiting components, therefore the PFH
figures are valid for up to 12 years, according to IEC 61508.
2
Note : The maximum frequency for Pulse Isolator 9202 with relay output is 20 Hz.
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.

9. failure category

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
Perform an ON / OFF signal for 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 pulse isolator. The proof test is equivalent to the functional test.

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.
9202 Pulse Isolator
failure category
Version No. V2R0
Safety Manual
failure rates (1/h)
Relay Opto
0.000E+00 0.000E+00
2.891E-07 2.749E-07
1.303E-07 1.356E-07
4.658E-08 3.618E-08
5