Enabling Functional Safety Over Device With Display - Siemens SITRANS P Operating Instructions Manual

10.2.1

Enabling Functional Safety over device with display

Requirement
● You have checked the settings of the safety-related parameters.
Safety-related parameters (Page 165)
Note
The main line of the display has a measured value display with a maximum of five digits.
● To completely display the measured values for upper range value [S3] and lower range
● You have selected one of the following characteristic curves using the "Application"
parameter [05]:
– Linear, proportional to pressure (PRESS).
– Linear, proportional to level (LEVEL).
– Proportional to flow rate, two-step linear up to the application point (VSLN2 or MSLN2).
● You have enabled the "User PIN" parameter [27].
The user PIN you use is not the preset user PIN (2457).
Procedure
1. Navigate to the parameter view.
Navigating in the views (Page 76)
2. Select the parameter "Functional Safety" [29].
3. To start the wizard, enter the user PIN if needed.
4. Use the
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 safety function.
When you select "ENABL", you enable Functional Safety directly without validation of the
safety-related parameters and the safety function.
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
value [S4] by means of the maximum five digits available, set the pressure units
(Page 107) correspondingly.
button to confirm.
Functional Safety
10.2 Enabling Functional Safety
167