Foundation Fieldbus optimized for FPSO - CAPEX. Jonas Berge, Emerson Process Management

Transcription

1 Foundation Fieldbus optimized for FPSO CAPEX Jonas Berge, Emerson Process Management 1

2 Topics System architecture review FOUNDATION fieldbus architecture advantages 2

3 3 System Architectures

4 Conventional Local I/O Wiring 30 m Module Junction Box 500 m Control Cabinet Topside Modules Total: 4,240 m IER 4 I/O cards mounted centrally indoor Well protected Easy I/O card inspection and replacement Cost includes: Price of multicore cable and tray Cost of labor to lay the cable and install tray, connecting wires Many different I/O card types Marshalling wires Verification

5 Conventional Devices Module Junction Box Marshalling I.S. Barrier Multicore cable Total: connections 24 I/O Assembly Separately powered safety barriers would increase count further. I/O cards with builtin safety barriers would reduce the count for some I/O types somewhat. 16

6 Simplify Complex Device Wiring Conventional One device, twelve wires Electric actuator (MOV) open/stop/close control, desired position, shut down, plus eleven feedback signals like limit switches, percentage open, local/remote status, opening/closing, torque tripped, percentage torque, and temperature tripped... Valve positioner Setpoint, feedback, limit switches... On/off actuator Setpoint, limit switches... Mass flow transmitter Mass, volume, density, temperature... Fieldbus One cable, twelve devices Many DI/DO cards eliminated Flexibility to include more signals in control strategy later without new wire or I/O cards Conventional: Multiple pairs per device Fieldbus: Single pair Many devices 6

7 RemoteI/O 30 m Module Cabinet Network 500 m Control Cabinet Power Topside Modules Network Power I/O in panels on modules on deck Part of system on deck Harsh environment Harder to access Devices still analog and on/off Still many wires Tradeoff between cabinet quantity and wire length Total: 2,240 m IER Larger cabinets on deck Cabinets require power Planning which cabinet goes where Devices not digital Not all digitally integrated... 7

8 Devices Marshalling I.S. Barrier Module Junction Box RemoteI/O Scanner Scanner 2 2 I/O Assembly Network Network Power Power Control Cabinet Controller Controller Total: 104 connections Separately powered safety barriers would increase count further. I/O cards with builtin safety barriers would reduce the count for some I/O types somewhat. 8

9 Fieldbus No I/O cards, power supply, or communication processor on deck All indoor: protected and easily accessible Multiple I/O card/barrier types replaced by interface module Different device types combined freely on the bus Intelligent FPSO Integrated device diagnostics 30 m Module Junction Box 500 m Total: 740 m Topside Modules IER 9

10 Fieldbus Devices Module Junction Box Marshalling I.S. Barrier Total: 55 connections I/O Assembly

11 RemoVe Discrete I/O High degree of digital instrumentation Fieldbus removes the need for a large portion of DI and DO Many DI for valve limit switches: Gone Many DO for valve actuation solenoids: Gone Use entry level Fieldbus transmitters in place of pressure switches, level switches, and flow switches etc Better diagnostics 11

12 Wire and Connection Summary Wire Length Connections I/O Location Conventional 4,240 m 160 Indoor RemoteI/O 2,240 m 104 On deck Fieldbus 740 m 55 Indoor How these hardware and labor savings translate into dollars and time depends on local conditions 12

13 13 FOUNDATION fieldbus Architecture Advantage

14 Advantages of FOUNDATION fieldbus 14 Multidrop wiring Wiring savings Closed loop digital control... Realtime status and feedback Highdensity devices... Transmitters with multiple channels Complex devices Wiring savings Greater signal fidelity Distortion can be detected Increased device diagnostics More powerful devices Firmware download Online upgrade Realnumber data transmission No skew of values

15 New Innovative Devices High Density Temperature Transmitter Machinery Health Transmitter You need a FOUNDATION fieldbus infrastructure to benefit from these new devices 8 Point Remote Indicator 2 Channel Temperature Transmitter 8 DI and 4 DO 15

16 HighDensity Transmitter Lower Cost: Fewer Transmitters, Less Wire Installed Cost Per Point $1,200 $1,000 $800 $600 $400 $ % Installed Cost Savings 16 $0 Wire Direct Shorter sensor wires Less noise pickup Fewer cables Lower cost LowCost Programmable Transmitter Multiplexer High Density Transmitter

17 All Devices Digitally Integrated Traditional Smart Devices Transmitter Flow meter Liquid analyzer Valve positioner (pneumatic) Fieldbus Additions On/Off valve coupler (pneumatic) On/Off valve actuator (pneumatic) Electric actuator Remote I/O box Gas analyzer Machinery health transmitter 17 Complex devices (many signals) Many more devices around the plant can benefit from device management: diagnostics No device left as an "isolated island"

18 Digital Closed Loop Control Initiate FaultState Validity: Good/Bad/ Uncertain Limited: High/Low Bumpless Transfer Windup Protection 18 Speed Realtime value and status Status Propagation (CIF & CIC) Validated information Quality and limits Windup protection Bumpless transfer for valves Faultstate for valves etc.

19 Other Buses Are Not Like Foundation fieldbus 19 Intrinsically safe twowire bus power Ease of use in hazardous areas Precisely periodic updates PID Prioritized communication PID Timestamped alerts Faster and more accurate diagnostics alerts Time synchronized execution PID Automatic addressing, tagbased Ease of use Multimaster Diagnostics and calibration on deck Control anywhere Fast response

20 Intelligent FPSO Write digital plant architecture into the bid specification Safety Data Control & Monitoring Electrical Acquisition 20