SH/T 3217-2021 in English
VALIDDesign specification for the foundation fieldbus control system in petrochemical industry
- Issued on:2021-08-21
- Implemented on:2022-02-01
- File Format:PDF
- Delivery:Via email within 5 business days
$582.00
本文件规定了石油化工工程项目中采用基金会现场总线控制系统的工程设计原则和基本要求。
本文件适用于石油化工及以煤为原料制取燃料及化工产品工厂的新建、扩建和改建工程的基金会现场总线控制系统的工程设计。
本文件适用于GB/T 16657.2和IEC 61158-2标准所定义的现场总线类型1的双绞线介质中的b类-电压模式（并联耦合）、通信速率为31.25kbit/s的现场总线；以及IEC 61784-1标准所定义的现场总线行规集CPF 1中的基金会现场总线行规1/1，通信速率为31.25kbit/s的低速现场总线（FF H1）。
Introduction
Analysis of the core content of the standard
This standard specifies the control system design specifications for the petrochemical industry using FOUNDATION Fieldbus (FF), with the following highlights:
- Engineering design framework: Technical requirements for the basic/detailed engineering design stage
- Network segment topology design: Application scenarios of tree/T-type/combined structures
- Equipment selection criteria: Interoperability requirements for FF transmitters, valve positioners and other devices
- Safety protection system: Application of FISCO intrinsic safety model
Comparison of key technologies
| Technical dimensions | FF H1 network segment | Traditional 4-20mA system |
|---|---|---|
| Communication mode | Digital signal (31.25kbit/s) | Analog signal |
| Device capacity of single network segment | ≤16 units (≤12 units recommended) | Single loop independent wiring |
| Control function distribution | Support device embedded PID function block | Depend on DCS controller |
| Diagnostic capability | Real-time device status monitoring | Process variable monitoring only |
Key points of project implementation
Typical application scenarios
Case: In the refinery hydrogenation unit, the FF valve positioner is used to implement cascade control of reactor temperature:
- The main PID module is deployed in the DCS controller
- The sub-PID module is built into the FF positioner
- Set value transmission is achieved through the H1 network segment (macro cycle 500ms)
- The FISCO intrinsic safety solution (Zone 1) is adopted
After implementation, the control response time is shortened by 40%, and the completeness rate of valve diagnostic data upload is ≥99.7%.
Background of Standard Evolution
This standard is based on the international specification IEC 61158-2/61784-1, combined with the experience of domestic petrochemical projects:
- 2017: Project preparation by the Ministry of Industry and Information Technology (Ministry of Industry and Information Technology [2017] No. 106)
- Technical breakthrough: Clarify the FISCO implementation plan of FF in explosion-proof areas
- Localization improvement: Add engineering methods such as cable length calculation and voltage drop verification
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
SH/T 1151-1998 in English
Determination of high-speed mechanical stability of synthetic latex
1992-05-20 -
SH/T 0644-1997 in English
Aviation hydraulic oils—Test method of low temperature stability
1997-07-12 -
SH 0229-1992 in English
Solid and semi-solid petroleum product sampling
1992-05-20
