System and method for shutting down a field device

A field equipment, equipment technology, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as influence

Active Publication Date: 2014-12-31
FISHER CONTROLS INT LLC
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Undetected dangerous failures adversely affect the PFD and / or SFF associated with the equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System and method for shutting down a field device
  • System and method for shutting down a field device
  • System and method for shutting down a field device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The disclosure herein relates to providing control systems and methods for ensuring that field devices implemented in safety instrumented systems are brought into a safe state. figure 1 The exemplary process plant 10 shown in FIG. 2 that can implement one or more embodiments of the present invention includes a process control system 12 and a safety system 14 (depicted in dashed lines) that typically operates as a safety instrumented system (SIS). SIS 14 is capable of performing safety instrumented functions (SIFs) to achieve or maintain a safe state in process control system 12 . If necessary, SIS 14 can override process control system 12 .

[0022] Process plant 10 includes one or more host workstations 16 or computing devices such as personal computers, for example, having a user interface including a keyboard and display screen accessible by plant personnel. exist figure 1 In the example shown in , two workstations 16 are shown connected to a process control / safety...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a system and method for shutting down a field device. A diagnostic system and method for a field device implemented in a safety instrumented system includes detecting an occurrence of a safety event associated with the field device, overriding normal control of the field device to cause the field device to enter a safe state in response to the detected occurrence of the safety event, verifying the override of normal control of the field device, and transmitting a control signal to cause the field device to enter the safe state.

Description

technical field [0001] The disclosure herein relates generally to controlling field devices in safety instrumented systems, and more particularly to systems and methods for placing field devices in a safe state. Background technique [0002] Process control systems such as those used in chemical, petroleum, and other processes typically include one or more controllers communicatively coupled to at least one host computer via an analog, digital, or combined analog / digital bus or user workstation and one or more field devices. Field devices may include, for example, control valves, valve positioners, switches, and transmitters (eg, temperature, pressure, and flow rate sensors) that perform in-process functions such as opening or closing valves and measuring process parameters. The process controller receives signals indicative of process measurements made by the field devices and / or other information concerning the field devices and uses this information to implement control ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G05B19/418
CPCG05B2219/24031G05B2219/24117G05B2219/24211G05B19/0428G05B9/02G05B19/418
Inventor S·G·塞伯格J·L·斯诺巴杰
Owner FISHER CONTROLS INT LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap