Breaking the Limits of Analog Technology Key attributes of the technology that makes FOUNDATION fieldbus suitable for process control
FOUNDATION Fieldbus Started with a Few Simple Ideas: Reduce cabling Simplify marshalling Enable real-time digital closed-loop control Ensure multi-vendor interoperability Expand device intelligence Allow diagnostics-based maintenance Liberate plants from proprietary protocols 01000110 01000110 01001000 00110001 01000110 01000110 01001000 00110001 2
Real-Time Digital Communication for Process Control Real-time digital communication network Designed specifically for process control applications Takes the place of analog 4-20 ma and on/off signals Digital Digital Digital Analog Analog Digital Digital Digital Digital Digital 3 Hardwired Fieldbus
Applies to All Controls & Instrumentation Systems: Distributed control systems (DCS) Programmable logic controllers (PLC) Remote terminal units (RTU) Instruments: Transmitters Analyzers Control valve positioners On/off valves 4
Basic Components 5
6 All-Digital From Sensor to Actuator Completely eliminating the need for intermediate analog 4-20 ma signals Process Discrete Process Discrete Analog Binary Realtime Digital Digital (4-20 ma) (on/off) control (FF) (FF) Digital None Device Digital Digital FoxCom) (HART, manag Brain, DE, ement (FF) (FF) Analog Digital Transmitter Analog Digital Digital Positioner Digital Digital Digital Discrete Dumb Transmitter Controller On/Off Valve Digital Hardwired Controller Fieldbus Digital Digital Positioner Digital On/Off Valve
7 Fieldbus is a Kind of Soft I/O Level Interface Level Mass Flow Density Volumetric Flow ph Temperature Solenoid Opened Feedback Closed Feedback Valve Setpoint Position Feedback Open Command Close Command Opened Feedback Closed Feedback Temperature Torque L F A S M Ability to connect multiple devices, each with multiple I/O signals, on the same pair of wires Ability to edit signal marshalling from software Field Junction Box 1 pair >30 signals Marshalling Cabinet System Cabinet
8 Multiple I/O Signals per Device Amperometric Analyzer 2 I/O Conductivity Analyzer 2 I/O Density Transmitter 2 I/O Flowmeter 2 I/O Flue Gas Transmitter 2 I/O Process Gas Analyzer 5 I/O Gas Chromatograph 25 I/O Interface Level Transmitter 2 I/O Control Valve Positioner 2 I/O 1 device is not 1 I/O point 1 device corresponds to perhaps 3 I/O points on average S M Level Transmitter 1 I/O Multiple Sensor Temperature Transmitter 8 I/O Oxygen Transmitter 2 I/O ph Analyzer 2 I/O Pressure Transmitter 1 I/O Temperature Transmitter 1 I/O Mass Flow Meter 3 I/O On/Off Valve 3 I/O Electric Actuator (MOV) 16 I/O
Common Open Standard Protocol Takes the Place of Proprietary Protocols Ability to freely replace devices while maintaining digital integration: Electric actuators/motor-operated valves (MOV) Gas chromatographs Tank gauging systems 9
Digital Closed Loop Control Time-synchronized and scheduled communication Ensure deterministic closed loop digital control AI Communication PID AO 10 Scheduler All devices are timesynchronized, executing their function at precisely the right time for best performance.
Designed for Process Plant Requirements Supports long cable lengths Junction boxes far into the field Long spurs for devices Two-wire twisted pair cable Communication Power supply The device power suitable for all hazardous areas zones 0/1/2: Intrinsically safe Non-incendive Rugged screw terminals No special connectors 11
Suitable for Hazardous Areas Can be intrinsically safe or non-incendive Flameproof (explosion proof) also possible Supports field mounted safety barriers installed in Zone 2 or 1 Power Field Zone 2 1 0 12 Division 2 1
13 Interoperability: Ability to Mix Devices and System from Different Manufacturers Standard Profiles: Standard communication settings Standard transducer blocks: Temperature transmitter Pressure transmitter Flow transmitter Valve positioner Etc. EDDL Files Automatic integration of all device information into DCS Graphical display in intelligent device management (IDM) software part of the asset management system (AMS) Configuration/Setup Diagnostics TT PT FT CV
Digital Everywhere Intelligence in Every Device Ability to centrally manage all field instruments including on/off valves and MOV Configuration/setup Diagnostics Ability to plan maintenance and turnaround based on diagnostics 14
Device Diagnostic Alarms: Ability to Detect Device Problems Early Fast reporting of device diagnostic alarms No long polling cycles Alarms time-stamped at source NAMUR NE107 status signals for device diagnostic alarm management no alarm flooding 15
Familiarity: Ability to Use the Same Tools as for 4-20 ma/hart Uses device tag No manual address setting Supports temporary masters: Handheld field communicators Laptop/tablet software Documenting calibrators 16
Control-In-the-Field (CIF) Designed from the ground up to enable controlin-the-field (CIF) Ability to control more loops fast Peer-to-peer communication Standard function blocks AI PID AO 17
Enables New Powerful Devices Intelligent two-wire on/off devices with predictive diagnostics Multi-input temperature transmitters Multi-channel field indicators Etc. 18
19 Enormous Benefits Demonstrated in Thousands of Sites Around the World Reliance Jamnagar Refinery The Largest Refinery in the World: 22,000 Devices Shanghai SECCO Refinery 900 TPY Ethylene, Using Control in the Field CSPC Nanhai Refinery Refining & Petrochemical Complex with 16,000 FF Devices Drax Largest Coal Fired Power Plant in the UK NAM Groningen Gas Field Largest Gas Producer in Netherlands Etc.
Where Can I Learn More? What is FOUNDATION fieldbus? Breaking the Limits of Analog Technology Proven Benefits in Projects Worldwide Enhanced Operations and Maintenance Ease of Use 20 http://www.fieldbus.org/im ages/stories/technology/a boutthetechology/overview /fieldbus_brochure.pdf
Enabler: FOUNDATION fieldbus Ability to connect many devices on the same pair of wires Ability to edit signal marshalling from software Ability to control more loops fast Ability to digitally integrate components from multi-vendors Ability to diagnose discrete devices Ability to plan maintenance and turnaround based on diagnostics Ability to freely replace devices while maintaining digital integration 21