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464 Verification and validation
Validation of safety functions
Once the system is fully configured and wired for the safety functions, and the initial
checks have been done, you must do the following functional test procedure for each
safety function:
1. Run the system to the operational state, and make sure that the drive and FSO
module are ready for the safety function validation. There are no active faults in
the drive or FSO module.
2. Make sure that the acknowledgement method has been configured as required in
the risk assessment of the application (manual or automatic acknowledgement).
3. Activate the safety function, for example through PROFIsafe or by an activating
safety switch.
4. Verify that the desired functionality takes place, and the system behaves safely
according the requirements of the risk assessment.
5. Document the test results to the validation test report.
6. Sign and file the validation test report.
Validation of redundant inputs
If safety function is configured to use redundant inputs, the diagnostic function of
each redundant input must be verified.
This is an validation example with the SS1 function. Inputs X113:1 and X114:1 are set
for the SS1 input. Validation procedure:
1. Remove one channel from the FSO input 1 for SS1 function (for example, input
X113:1).
2. Make sure that the FSO module activates the SS1 function (FSO SS1 request).
3. Make sure that the warning of redundant inputs (A7D0) appears.
4. Connect the disconnected input channel back to the FSO input 1 for SS1.
5. Verify that it is not possible to acknowledge the SS1 function.
6. Request SS1 function by activating both input channels.
7. Make sure that the warning of the redundant inputs (A7D0) disappears.
8. Deactivate SS1 function.
9. Acknowledge the function.
Repeat this procedure for all redundant input(s), and with all safety functions that use
the inputs.
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