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Procedure
1. Navigate into the parameter view.
Navigating in the views (Page 71)
2. Select the parameter "Functional Safety" [29].
3. To start the wizard, enter the user PIN if needed.
4. Use the button to confirm.
The display test runs automatically.
5. Check that the numbers, texts and symbols are displayed correctly.
6. Once the display test is complete, start the validation of the safety-related parameters and
the fail-safe behavior.
When you select "ENABL", you enable Functional Safety directly without validation of the
safety-related parameters and the fail-safe behavior.
Validating safety-related parameters
1. Select "VALID".
2. Use the button to confirm.
3. Navigate to the safety-related parameters with the button.
To correct the safety-related parameters, exit the wizard with the button. Use the
button to confirm.
Note
Write protection via user PIN is automatically enabled 10 minutes after the last button
operation. The wizard therefore aborts and the validation of the safety-related parameters
is lost.
● To start the wizard again, enter the user PIN.
Functional Safety
10.2 Enabling Functional Safety
SITRANS P320/P420 (mA/HART)
Operating Instructions, 06/2018, A5E44852162-AA
161