Upload
vulien
View
233
Download
5
Embed Size (px)
Citation preview
1 Freedom to Choose. Power to Integrate.1 Freedom to Choose. Power to Integrate.
Freedom to Choose. Power to
Integrate.
FOUNDATION™ FieldbusFieldbus Basics
2 Freedom to Choose. Power to Integrate.2 Freedom to Choose. Power to Integrate.
Topics FOUNDATION fieldbus Architecture H1 Overview H1 Technology High Speed Ethernet (HSE) Overview
3 Freedom to Choose. Power to Integrate.3 Freedom to Choose. Power to Integrate.
Freedom to Choose. Power to
Integrate.
FOUNDATION fieldbus Architecture
4 Freedom to Choose. Power to Integrate.4 Freedom to Choose. Power to Integrate.
What is Fieldbus? A fieldbus is an all-digital, serial two-way, multi-drop
communication System. H1 (31.25kbps) interconnects field equipment (Sensors,
Actuators & I/O). HSE (High Speed Ethernet, 100mbps) provides
integration of high speed controllers, subsystems (via Linking Device) and data servers and workstation.
5 Freedom to Choose. Power to Integrate.5 Freedom to Choose. Power to Integrate.
Integrated Architecture Management Information Systems (MIS),
Enterprise Resource Planning (ERP), and Human Machine Interface (HMI) access the H1 Fieldbus information via the Data Servers.
Business Enterprise and Plant Application Packages
H1 and HSEFactory/Plant Instrumentation and Control devicesH1-Fieldbus
HSE Network
MISERPHMI
6 Freedom to Choose. Power to Integrate.6 Freedom to Choose. Power to Integrate.
Freedom to Choose. Power to
Integrate.
H1 Overview
7 Freedom to Choose. Power to Integrate.7 Freedom to Choose. Power to Integrate.
Multiple Variables Fieldbus allows “multiple variables” from each device to be brought
into the control system for archiving, trend analysis, process optimization, reporting, predictive maintenance and for asset management.
Fieldbus distortion-free characteristics digital communication enables improved control capability which can improve product yields.
Traditional 4-20mA and on/off One Variable (One Direction)
PV
Control System Network
4-20mA
HSE
H1
Fieldbus Multiple Variables (Both Directions)
Analog Controller Fieldbus Controller
PV , Mode , Variables , AlarmDiagnostics , EtcI/O Subsystem
8 Freedom to Choose. Power to Integrate.8 Freedom to Choose. Power to Integrate.Fieldbus Extends View to Field InstrumentTraditional 4-20mA View stops at I/O Subsystem
PV
Control System Network
4-20mA
HSE
H1
Analog Controller Fieldbus Controller
PV , Mode , Variables , AlarmDiagnostics , EtcI/O Subsystem
Diagnostics Self Diagnostics and communication capabilities of
microprocessor based fieldbus devices helps reduce downtime and improve plant safety.
Plant operation and Maintenance personnel can be notified and corrective actions taken quickly and safely.
9 Freedom to Choose. Power to Integrate.9 Freedom to Choose. Power to Integrate.
Control Strategy Standard Function Blocks is used to implement the Control Strategy. Many control system functions such as AI, PID and AO can be
performed by the field device through the use of these Standard Function Blocks.
Distribution of control into field devices can reduced the amount of hardware and cabinet footprint needed.
Fieldbus Extends Control and I/O to Field InstrumentTraditional Control and I/O requires extra hardware
Control System Network
PID
AI AO
PV
4-20mA
Analog Controller
I/O Subsystem
HSE
H1
Fieldbus Controller
PV , Mode , Variables , AlarmDiagnostics , Etc
AI AO PID
10 Freedom to Choose. Power to Integrate.10 Freedom to Choose. Power to Integrate.
Freedom to Choose. Power to
Integrate.
H1 Technology
11 Freedom to Choose. Power to Integrate.11 Freedom to Choose. Power to Integrate.
H1 Physics Multi-Drop wire pair with Power and Signal on same cable. Support Intrinsic Safety. Function Blocks built into Field Devices. Control on the Wire – single loop integrity Distance up to 1900 meters Add Repeaters to extend > 1900 meters Max. of 4 repeaters can be used to a maximum distance of 9500
meters
HSE
H1Digital Signal
1900 meters
R
Distance > 1900 meters
H1 Digital Signal
Fieldbus Signal
12 Freedom to Choose. Power to Integrate.12 Freedom to Choose. Power to Integrate.
Intrinsic Safety
Control room Field
T
Trunk
Wiring block
Field device
Powersupply
Host Control System
Conditioner T
I.S Interface
I.S certified devices
I.S certified devices
13 Freedom to Choose. Power to Integrate.13 Freedom to Choose. Power to Integrate.
EDDL and CFF Files Field Devices will consists of:
– Actual Physical Device.– Device Description (DD).– Common File Format (CFF).
DDs and CFFs made by the Device Supplier
Parameters and Capabilities are defined in device files –DD and CFF– Defines how device shall be
displayed in the system
ConfigurationSystem
H1 Network
DD & CFF
Instruments described with
Device Description Language
www.fieldbus.org
14 Freedom to Choose. Power to Integrate.14 Freedom to Choose. Power to Integrate.
DD and CFF Files Device Descriptor (DD) File allow operation of
devices from different suppliers on the same fieldbus with single host system.
Common File Format (CFF) is a file which describes the functions and capabilities of a field device.
The CFF file is used in conjunction with the Device Descriptor file to enable a host system to configure the system off-line.
CFF files are standard ASCII text file.
15 Freedom to Choose. Power to Integrate.15 Freedom to Choose. Power to Integrate.
Typical Fieldbus Installation• An example of the Chicken foot
(tree) topology.• Redundant, isolated power
conditioning defined• Typically 10-12 bus-powered
fieldbus devices per segment.• 120 m distance from FF JB to FF
Device• Spur short-circuit protection.• Up to 1900 meters.• Maximum of 9500 meters via
repeaters.
PC Power supply
T
PC Power supply
T
2Bu
TrunkSpur
Field Devices
Control System (Host)Fieldbus Interface Module
DOFC
16 Freedom to Choose. Power to Integrate.16 Freedom to Choose. Power to Integrate.
Fieldbus Components
WorkstationWorkstation HMIHMI
TerminatorTerminator
Power SupplyPower Supply
Junction BoxJunction Box
H1 Bus Wire (Spurs)H1 Bus Wire (Spurs)
ConditionerConditioner
Actuator ValveActuator Valve
Fieldbus Interface ModuleFieldbus Interface Module
TerminatorTerminator
H1 Bus (Trunk)H1 Bus (Trunk) Hazardous Area (Field)
Safe Area (Host)Fieldbus Controller
AnalyzerAnalyzerTransmittersTransmitters
17 Freedom to Choose. Power to Integrate.17 Freedom to Choose. Power to Integrate.
Resource Block The Resource Block describes characteristics of the fieldbus device
such as device name, manufacturer and serial number, etc. There is only one Resource Block in a device.
Control Builder Project tab
FIM H1 link interfaces
Device
DeviceResource block
Transducer block
18 Freedom to Choose. Power to Integrate.18 Freedom to Choose. Power to Integrate.
Transducer Block Transducer Blocks are used to configure devices. Transducer Blocks are required to Read sensors value
and command output value.
Control Builder Project tab
FIM H1 link interfaces
Device
DeviceResource block
Transducer block
19 Freedom to Choose. Power to Integrate.19 Freedom to Choose. Power to Integrate.
Function Blocks The Control System Strategy is built using Function Blocks. Input and output parameters of Function Blocks can be linked over
the fieldbus. The execution of each Function Blocks is precisely scheduled and
there can be many function blocks in a single user application.
AI Block PID Block
AO Block
20 Freedom to Choose. Power to Integrate.20 Freedom to Choose. Power to Integrate.
Standard Function Blocks
Function BlocksFunction BlocksAnalog Input
Analog Output
Bias/Gain
Control Selector
Discrete Input
Discrete Output
Manual Loader
Proportional/Derivative
Proportional/Integral/DerivativeRatio
Function BlocksFunction BlocksDevice ControlOutput SplitterSignal CharacterizerLead LagDeadtimeIntegrator (Totalizer)Setpoint Ramp GeneratorInput SelectorArithmeticTimerAnalog Alarm
Function BlocksFunction Blocks
Multiple Analog Input
Multiple Analog Output
Multiple Discrete Input
Multiple Discrete Output
21 Freedom to Choose. Power to Integrate.21 Freedom to Choose. Power to Integrate.
AI Block PID Block
AO Block
HSE
Fieldbus Controller
PIDAI
AO
H1 Fieldbus
Example of a complete control loop using Function Blocks located in fieldbus Devices.
Example of a complete control module strategyControl on the Wire.
Example of a Control Loop Control Strategy can be built using Function Blocks built into field
devices. A simple temperature transmitter may contain an AI function block. A
Control Valve might contain a PID function block as well as the expected AO Block.
Thus, a complete control loop can be built using a simple transmitter and a control valve. Control in the Field does need a Controller.
22 Freedom to Choose. Power to Integrate.22 Freedom to Choose. Power to Integrate.
H1 Link Master Redundancy Two types of devices:
– Link Master• Capable of becoming Link Active Scheduler (LAS).
– Basic Device Link Master Device are
BKUP LAS
PRIM LAS
BASIC Device
23 Freedom to Choose. Power to Integrate.23 Freedom to Choose. Power to Integrate.
H1 Link Active Scheduler PID Loop scheduled and unscheduled
communication.
AI 110
Scheduled UnscheduledClosed loop control Alarms/Events
Maintenance/Diagnostic InformationProgram InvocationPermissives/InterlocksDisplay InformationTrend InformationConfiguration
loop 110 period of execution
PID 110AO 110
Function Block Execution
Scheduled Communication
Unscheduled Communication
Function blocks:
24 Freedom to Choose. Power to Integrate.24 Freedom to Choose. Power to Integrate.
Link Schedule
25 Freedom to Choose. Power to Integrate.25 Freedom to Choose. Power to Integrate.
Freedom to Choose. Power to
Integrate.
High Speed Ethernet (HSE) Overview
26 Freedom to Choose. Power to Integrate.26 Freedom to Choose. Power to Integrate.
HSE – High Speed Control and Integration Backbone
APPLICATIONPACKAGES
MIS
P
L
P
L
P
L
P
L
Data Servers
LDLD
FF Integrated ArchitectureHSE – Subsystem Integration High Performance Control Backbone Standard Ethernet Equipment and Wiring Standard Function Blocks PLUS Flexible Function Blocks for
Discrete/Batch/PLC Redundant HSE Interfaces and Devices Linking Devices (LD) Integrate H1 HSE Provides the Open Interface for Data
Servers
27 Freedom to Choose. Power to Integrate.27 Freedom to Choose. Power to Integrate.
MIOinside
H1P
L
Plant
P
L
Plant
P
L
Plant
H1 H1
HSE Client
100 Mbit/sSwitch
LinkingDeviceHSE
Field Device
Gateway
I/O Network
High Speed Ethernet Devices
28 Freedom to Choose. Power to Integrate.28 Freedom to Choose. Power to Integrate.
H1P
L
Plant
P
L
Plant
P
L
Plant
H1 H1
HSE Client
LinkingDevice
HSEField Device
Gateway
I/O Network
HSE - LAN Redundancy
29 Freedom to Choose. Power to Integrate.29 Freedom to Choose. Power to Integrate.
H1P
L
Plant
P
L
Plant
P
L
Plant
H1 H1
HSE Client
LinkingDeviceHSE
Field Device
Gateway
I/O Network
HSE - Device Redundancy
30 Freedom to Choose. Power to Integrate.30 Freedom to Choose. Power to Integrate.
Additional Points FOUNDATION fieldbus is tried and tested since 15 years Only FF supports temporary master like handheld or laptop 8 channel temperature transmitters replace 8 regular transmitters Fieldbus electric actuators eliminate 6-12 pair of wires Only FF supports firmware upgrade instead of circuit replacement FF provides closed loop digital control: sensor to actuator Fieldbus provides flexibility to add devices to the bus Fieldbus provides flexibility to use additional signals in the device Fieldbus eliminates proprietary MOV bus No need to change I/O card type when device type is changed FF integrates gas chromatograph in asset management software Fieldbus is made easy thanks to wizards and EDDL etc.