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Functional safety
7.3 Settings
SITRANS P500 with HART
172
Operating Instructions, 12/2014, A5E02344528-09
Operational reliability
According to IEC 61511-1, Section 11.4.4, the hardware fault tolerance (HFT) can be
reduced by one (values in brackets) for transmitters and final controlling elements with
complex components if the following conditions apply to the device:
●
The device is proven in operation.
●
The user can configure only the process-related parameters, e.g. control range, signal
direction in case of a fault, limiting values, etc.
●
The configuration level of the firmware is blocked against unauthorized operation.
●
The function requires SIL of less than 4.
See also
General functional safety (
Functional safety in process instrumentation (
7.3
Settings
Introduction
This section details the following areas:
●
Settings for devices with functional safety
●
Measures you must take when using the device for functional safety.
Procedure
1.
Setting safety-relevant parameters
2.
Checking the safety function
3.
Activating button lock and access protection
Setting safety-relevant parameters
Parameter name
Set parameter value
Low saturation limit
3.8 mA
High saturation limit
20.5 mA
Lower fault current value
3.6 mA
Upper fault current value
22.8 mA
Содержание SITRANS P500
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Страница 10: ...Table of contents SITRANS P500 with HART 10 Operating Instructions 12 2014 A5E02344528 09 ...
Страница 14: ...Introduction 1 6 Notes on warranty SITRANS P500 with HART 14 Operating Instructions 12 2014 A5E02344528 09 ...
Страница 214: ...Technical data 11 9 HART communication SITRANS P500 with HART 214 Operating Instructions 12 2014 A5E02344528 09 ...
Страница 218: ...Dimension drawings 12 2 Level SITRANS P500 with HART 218 Operating Instructions 12 2014 A5E02344528 09 ...
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Страница 228: ...Appendix A 4 Technical support SITRANS P500 with HART 228 Operating Instructions 12 2014 A5E02344528 09 ...
Страница 230: ...List of abbreviations SITRANS P500 with HART 230 Operating Instructions 12 2014 A5E02344528 09 ...
Страница 234: ...Glossary SITRANS P500 with HART 234 Operating Instructions 12 2014 A5E02344528 09 TP Total Performance ...
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