Presentation is loading. Please wait.

Presentation is loading. Please wait.

Optimized Hazard Protection

Similar presentations


Presentation on theme: "Optimized Hazard Protection"— Presentation transcript:

1 Optimized Hazard Protection
StoneL Optimized Hazard Protection

2 StoneL’s Overall Focus
Enabling you to cut installation costs and improve operating performance by effectively implementing bus networking and optimized hazard protection

3 New Field Wiring Architecture
Bus Networking Save up to 40% using bus networking vs conventional Optimized Hazard Protection Save Up to an Additional 25% Using Tray Cabling Concepts Stress the value proposition of “flex wiring” concept that will enhance installation cost savings of an additional 15% over fieldbus installation savings. This is to “wet the whistle” for our role out in May-June and training in Aug & Oct. I look at it in 3 stages: VCT – build the best mouse trap – eventually our competitors have similar product to offer FL – move “up stream” with StoneL manufacturered product – we begin to separate ourselves from some switch companies but now have other competitors Conceptual selling – moving into a consultant type role and explain how to further take advantage of digital technology beyond hardwire (I.e. flew wiring). Still requires some hardware, but this type of selling is more difficult to copy then equipment selling.

4 Bus Network Savings Reduced Installation Cost Less Space Required
Easier Commissioning Greater Flexibility

5 Hazard Protection Savings
Further Reduce Installation Costs Safer System Easier Maintenance Increased Flexibility

6 Total Savings Up to 65%

7 FieldLink “Enables” You to Realize Savings
Full Array of Process Networking Products Compliance to Tray Cabling & Traditional Hazard Protection Certified Integrator Network

8 Optimized Hazard Protection for Process Networking

9 What We’ll Cover Process Area Classifications & NEMA Ratings
Protection Concepts for Bus Networking in Hazardous areas StoneL Component Compatibility with each Protection Concept Other Wiring Considerations Optimal Implementation of Protection Concepts can Dramatically Cut Costs and Improve Operating Safety!

10 NEMA Ratings; (National Electrical Manufacturers Association)
Most Significant Ratings NEMA 4 - Waterproof NEMA 4X - Waterproof & Corrosion Proof NEMA 6 - Temporary Submersibility NEMA 7 – Class I (Obsolete) NEMA 9 – Class II (Obsolete)

11 Hazardous Area Ratings

12 Other Hazardous Area Considerations
Temperature Classes Define maximum surface temperature of Field Device; Gases may ignite due to thermal conditions Gas Ignition Temperature T Classes 700 Ammonia 630 Methane 595 Hydrogen 560 Propane 470 Ethylene 425 Butane 365 600 500 T ºC 400 300 T ºC Cyclohexane 259 Diethyl Ether 170 Carbon Disulphide 100 200 T ºC Note: T ambient = 40 ºC T ºC 100 T ºC T ºC

13 Area Classification Example
Tank Vents Area Classification for a fixed-roof tank venting a heavier than air vapor Div 1 Div 2 Bund wall

14 Hazardous Area Ratings

15 Wiring Systems Used in North America
Typically Greater Use of Hazard Protection To Assure Greater Safety All Areas Hazardous Areas

16 Hazardous Area Approvals
Manufacturers May Use Ratings on Labels Even Though Non Third Party Approved Third Party Approval Agencies; Equipment must be Tested by Third Party to NEC Standard to have Logo on Label: - FM (Factory Mutual, US Market) - UL (Underwriters Labs, US Market) - ULc (UL for Canada & US Markets) - CSA (Canadian Standards Association)

17 Protection Concept Considerations
Explosion Proof Explosion Proof w Nonincendive Equipment Tray Cable w Nonincendive Equipment Tray Cable w Nonincendive Field Wiring Intrinsically Safe

18 Area Classification Compatibility

19 Explosion Proofing Basic Concept
Contain ignition inside Conduit System and Enclosures Cool Gases to Prevent Ignition Outside of Containment Vessels Advantages Well Understood in North America Unlimited Power for Instrumentation/Bus Circuits Disadvantages Deterioration in Conduit and/or Housing can Degrade Protection Enclosures May not be Opened with Circuits Energized Bulky Conduit and Enclosures are Expensive, Space Consuming and Inflexible

20 Bus Network (Division 1 and 2)
Field Enclosures Explosion Proof Seal Fittings Purging an Alternative Connections Explosion Proof Approved Fittings Only (No quick connectors) Field Wiring Rigid Conduit with 5 full threads of engagement Metal Clad or Mineral Insulated Metal Sheathed Where Flexibility Needed Field Instrument Components Seal offs May be Needed

21 Bus Network (Division 1 and 2)
Hazardous Area

22 Seal Offs Must be sealed with potting after wires are pulled through seal off and conduits Wadding is stuffed on each side and a compound poured in top conduit opening Can be difficult to make a good seal in the field

23 Network Economic Analysis
Conventional AS-I FF * Computer I/O; Master/Gateway $ $ $ Conduit, Cable Tray, Wiring & Fittings $ 1,600 $ $ Valve Monitor/VCT with Pneumatic Valve $ $ $ Switched Protected Drop Connector NA $ $ Installation & Commissioning Labor $ $ $ Power Supply $ $ $ Total Installed Cost $ 2,940 $ 1, $ 2,020 * FOUNDATION Fieldbus is not directly comparable. Analog instruments may require less adder over conventional 4 to 20 Ma instruments making this system cost effective when combining analog and discrete field instruments on the same segment. Functionality for FOUNDATION Fieldbus devices is also significantly greater, offering increased diagnostic and operational capabilities.

24 StoneL Components Junction Module (JM) Quartz VCTs Wire (In Conduit)

25 with Nonincendive Equipment
Basic Concept Used as part of an Explosion Proof System in Division 2 Areas Enclosures must be rated at least NEMA 4 or 4X and Contain Electrical Apparatus which has no Arcs or Sparks (solid state) or Arcs are Contained within an Hermetically Sealed Chamber Surface Temperatures of Components will not exceed T ratings Advantages Lower Cost Enclosures Less Space Consumed Enclosures May be Opened with Circuits Energized No Seal Offs are Required Non-Metallic Enclosures Acceptable Substantial Electric Power for Instrumentation Disadvantages Circuits have Electric Shock Hazard (May not be manipulated while energized) Division 2 Areas Only

26 Network (Division 2 Only)
Field Enclosures - General Purpose with Nonincendive Components - No Seal Offs Required - May Open Enclosure with Circuits Energized Field Wiring Threaded Rigid Metal Conduit MI and MC cable with Ex Termination Fittings Liquidtight where Flexibility Required Flexible Cord listed for Extra Hard Usage with listed Bushed Fittings Connections - Approved Ex Fittings Quick Connectors with Special Provisions 1. Power is removed before plugging & unplugging and 2. Current does not exceed 3 120VAC and 3. Cord is listed for hard usage with locking and grounding plug type and Label is attached to receptacle warning against plugging and unplugging while circuit energized Field Instrument Components Current Interrupting Contacts must Be Hermetically Sealed Nonarcing (solid state) Components Must Limit Temperature to Less than 80% of Gas Ignition Temperature

27 Network (Division 2 Only)
Hazardous Area

28 Network Economic Analysis
Conventional AS-I FF * Computer I/O; Master/Gateway $ $ $ Conduit, Cable Tray, Wiring & Fittings $ 1,400 $ $ Valve Monitor/VCT with Pneumatic Valve $ $ $ 1,025 Switched Protected Drop Connector NA $ $ Installation & Commissioning Labor $ $ $ Power Supply $ $ $ Total Installed Cost $ 2,435 $ 1, $ 1,915 * FOUNDATION Fieldbus is not directly comparable. Analog instruments may require less adder over conventional 4 to 20 Ma instruments making this system cost effective when combining analog and discrete field instruments on the same segment. Functionality for FOUNDATION Fieldbus devices is also significantly greater, offering increased diagnostic and operational capabilities.

29 StoneL Components FieldRack PowerSupplies
JM, FieldBlock, Quartz, Onyx, Eclipse ECN, VCTs Hawkeye with I/O VCTs Wire (In Conduit)

30 & Special Considerations
Unlimited Power Ideal for Large Strings of On/Off Devices Using Conventional Low Power Solenoids Use Any “Fieldbus” Protocol Use Heavy Enough Wire (18 Gage or Less) to Pull Through Conduit

31 Tray Cable Wiring with Nonincendive Equipment
Basic Concept Limited Power to Circuit of less than 100 Watts to Minimize Ignition & Shock Hazard (PLTC) or Current Limited from 3 to 5 Amps with maximum of 150 VAC (ITC) Utilize Special Cabling (PLTC or ITC) in Cable trays or with General Support Structures Advantages Significant Power for Bus Networks Low Cost Wiring and Instrumentation Enclosures Limited Shock and Ignition Hazard (Class 2 Circuits) Suitable for all Fieldbus Protocols Disadvantages Little Knowledge of PLTC or ITC Wiring Concepts Suitable for Division 2 Only

32 Network (Division 2 Only)
Hazardous Area

33 Network (Division 2 Only)
Field Enclosures Same as NIE Field Wiring ITC (Instrument Tray Cable) Used with Power limited to 150 Volts and 5 Amps PLTC (Power Limited Tray Cable) Used with Max of 100 watts & 60 Volts (Class 2 Approved Power Supply) Used in cable tray systems Must have 2in. Separation or Mechanical Barrier from Higher Power Circuits Both may be Used as Open Wiring Mechanically Protected by Angles, Struts or other Mechanical Means or Supported by Messenger Wire Both may be Used as Open Wiring where Cable Complies with Metal Clad or Follows Div 2 Ex Wiring Rules (Liquidtight etc.) Connections Approved Ex Fittings Quick Connectors with Special Provisions Compression Fittings Installed to Avoid Stress at the Cable Terminations Field Instrument Components

34 Network Economic Analysis
Conventional AS-I FF * Computer I/O; Master/Gateway $ $ $ Conduit, Cable Tray, Wiring & Fittings $ $ $ Valve Monitor/VCT with Pneumatic Valve $ $ $ 1,025 Switched Protected Drop Connector NA $ $ Installation & Commissioning Labor $ $ $ Power Supply $ $ $ Total Installed Cost $ 1,685 $ $ 1,625 * FOUNDATION Fieldbus is not directly comparable. Analog instruments may require less adder over conventional 4 to 20 Ma instruments making this system cost effective when combining analog and discrete field instruments on the same segment. Functionality for FOUNDATION Fieldbus devices is also significantly greater, offering increased diagnostic and operational capabilities.

35 StoneL Components FieldRack Power Supplies (Class 2 approved) JM
FieldBlock Quartz, Onyx, Eclipse ECN Hawkeye with I/O VCTs Wire (ITC and PLTC rated)

36 Special Network Considerations
Any Protocol may be Used with Tray Cable Concepts in Hazardous Areas Restrict Wire Gage to Larger than 20 AWG

37 Tray Cable with Nonincendive Field Wiring Drops & Associated Apparatus
Basic Concept Utilize Tray Cable for Trunk Utilize NIW for Drop Leg and Field Instruments NIW is not Capable Under Normal Operation of Igniting Gas or Dusts (Normal operation includes opening, shorting or grounding the field wiring) Advantages Significant Power to Bus Trunk & Adequate Power to Each Device 30 VDC) Low Cost Wiring and Instrumentation Enclosures (General Purpose Wiring from Protected Drop Connector) Very Limited Shock and Ignition Hazard (No shock hazard at field instrument) May work on Field Instruments with Circuits Energized Disadvantages Little Knowledge of Tray Cabling and NIW Concepts Limited Availability of Appropriate Protected Drop Connectors and Field Instruments (May use IS approved instruments) Suitable for Division 2 Only

38 Network (Division 2 Only)
Field Enclosures Trunk: Same as NIE Drop Leg: General Purpose Equipment Field Wiring Trunk: Use Tray Cabling Wiring Concepts Drop Leg: Use nonincendive field wiring concepts which allow general purpose wiring (Cable capacitance and inductance is negligible for 20 gauge and larger up to 300 meters) Connections Trunk: -Approved Ex Fittings - Quick Connectors with Special Provision -Compression Fittings Installed to Avoid Stress at the Cable Terminations Field Instruments Drop Leg: - Protected Drop Connector Limits Power to Field Instrument (Associated Apparatus) (Max voltage & current determined by ignition parameters for atmosphere; Short circuit current at max possible operating voltage may not cause ignition) - Quick Connectors may be used without limitation Field Instrument Components Trunk Components rated as nonincendive equipment Drop Connectors rated as nonincendive equipment with drop leg current and voltage limiting Drop Connector and Field Instrument Parameters must coordinate as follows: Drop Connector Field Instrument Voc < Vmax Isc < I max Field Instrument (Associated Apparatus) limited Capacitance & Inductance (IS devices may be used as nonincendive field wiring associated apparatus.

39 Network (Division 2 Only)
Hazardous Area

40 Network Economic Analysis
Conventional AS-I FF * Computer I/O; Master/Gateway $ $ $ Barriers $ $ $ Conduit, Cable Tray, Wiring & Fittings $ $ $ Valve Monitor/VCT with Pneumatic Valve $ $ $ Voltage & Current Limiting Drop Connector** $ 0 $ $ Installation & Commissioning Labor $ $ $ Power Supply $ $ $ Total Installed Cost $ 1,545 $ $ 1,320 *FOUNDATION Fieldbus is not directly comparable. Analog instruments may require less adder over conventional 4 to 20 Ma instruments making this system cost effective when combining analog and discrete field instruments on the same segment. Functionality for FOUNDATION Fieldbus devices is also significantly greater, offering increased diagnostic and operational capabilities. ** Drop connector acts as a barrier for nonincendive drops

41 StoneL Components May use IS Field Devices Hazardous Area Trunk
- FieldRack - Power Supplies (Class 2 Approved) - Wire ( ITC and PLTC rated) Drop Connectors Being Submitted as NIW Power limiting Field Instruments Currently Being Approved

42 Special Network Considerations
AS-interface, Foundation Fieldbus H1 and Profibus PA are compatible Concept should be applied rigorously (Components should be approved for IS or Nonincendive field wiring apparatus and protected drop connectors coordinated properly)

43 Intrinsically Safe Circuits
Basic Concept Prevents Ignition of Gases No Ignition Under Normal or Abnormal Circumstances Limit Electrical Energy Input and Energy Storage Provide Over Voltage and Short Circuit Protection Advantages Low Cost Wiring and Instrumentation Enclosures No Shock Hazard Instruments May be Serviced While Hot Disadvantages Limited Power Delivery Holding Maximum Number of Devices per String to 4 or 5 Use of Barriers Drops Available Voltage to Instruments Communication Protocols Limited to Those with Physical Layer (FF H1 and Profibus PA) Ignition Source Explosion Triangle Oxidizer Flammable Mixture

44 Devices Simple Devices Do not Require Approvals
Must not generate nor store more than 1.2V, 0.1A, .25mW (Examples: RTDs, TCs, LEDs, Diodes) IS Apparatus - Require Approvals - Given “Entity Parameters” ( Examples: Transmitters, Positioners, Solenoid Valves)

45 Bus Network (Divisions 1 & 2)
Field Enclosures NEMA 4 or 4X General Purpose Field Wiring General Purpose Cabling IS Barriers to Limit Voltage & Current under Fault Conditions Cable Capacitance Must be Evaluated Connections General Purpose Connections Apply (Quick Connectors may be used without Limitation) Field Instrument Components Must be IS Approved or Simple Hazardous Area

46 Bus Network (Divisions 1 & 2)
Utilize Entity Concept - Entity Parameters of Barrier and Field Devices Must Match - Cable Inductance & Capacitance Considered Concentrated and Must Be Considered Barriers Typically Limited to 60mA & 1.2W for Hydrogen; Restricting Number of Field Device OR Utilize FISCO Model (Fieldbus Intrinsically Safe Concept) - Device Entity Parameters for Inductance & Capacitance Minimize - Cable Inductance & Capacitance not Considered Concentrated so not Added to Calculations - Barriers Typically Limited to 100mA & 1.8W; Hydrogen Enabling Use of More Field Devices

47 Entity Concept Example
Tag Vmax Imax Pmax Ci Li Inom V mA W µF mH mA T T T Cable Voc Isc Pm Ca La Inom Barrier Required Selected Barrier T1 T2 T3 Hazardous Area

48 Entity Concept Example
Repeater/Barrier Selected Delivers 11 Volts Nominal Cabling 2  /100m meters X 2  /100m =10 Voltage Drop (Worst Case) A X 10  = 0.58Volts Minimum Voltage Available V – 0.6V =10.4 V > 9V OK!

49 FISCO Model Example Tag Vmax Imax Pmax Inom V mA W mA T1 24 250 2 16
Voc Isc Po Inom Barrier Required Barrier (Repeater) Selected Barrier T1 T2 T3 T4 Hazardous Area

50 FISCO Model Example Field Devices & Barrier must be Approved per FISCO (Can use FISCO approved with Entity Concept; Entity Approvals not Used with FISCO) FISCO Field Devices: Ci < .005µF Li < .01mH FISCO Cable Parameters: R loop  to 150 /km L to 1mH/km C to .2 µF/km Overall Length Max of 1km with Max Spur Length 30m Min, Voltage Available: 13V – (10X.078) = 12.2V > 9V

51 Multiple Barrier/Repeater on Same H1 Segment
Single Host and LAS controls several spurs Single Power Supply Barrier/Repeaters Enhance Signal and Provide IS Protection Field Devices Matched to Individual Barrier/Repeaters Hazardous Area

52 Bus Network Protocols Use Physical Layer (FF H1 or Profibus PA) May use FISCO devices with Entity Concept but not Entity Approved Devices with FISCO

53 Network Economic Analysis
Conventional FF Computer I/O; Master/Gateway $ $ 50 Barriers $ $ 190 Conduit, Cable Tray, Wiring & Fittings $ $ 220 Valve Monitor/VCT with Pneumatic Valve $ 415* $ 850* Protected Drop Connector $ $ 70 Installaton & Commissioning Labor $ $ 150 Power Supply $ $ 30 Total Installed Cost $1,545 $1,670 * Analog instruments may require less adder over conventional 4 to 20 Ma instruments making this system cost effective when combining analog and discrete field instruments on the same segment. Functionality for FOUNDATION Fieldbus devices is also significantly greater, offering increased diagnostic and operational capabilities.

54 StoneL Components Passive Drop Connectors
Protected Drop Connectors Approvals in Process (FieldBlock & JM) FF Eclipse & Dual Module Approvals in Process (Quartz, Onyx, SolaR) FF I/O Modules Approvals in Process Hawkeye with I/O Module Approvals in Process

55 Other Considerations (All Areas)
AS-Interface and DeviceNet flat cabling not desirable for Use in Process Areas When Using Auxiliary Power Cables with Communication Cabling, Care must be Taken to Prevent Mutual Inductance DeviceNet Transmission (Layer 0) Specifies the Exact Cabling to be Used with this Protocol. Use Different Cable with Protocols Using Different Physical Layers!!

56 Protocol Length Limitations
Length of Network Determined by - Signal Attenuation and/or Reflections (Given by Protocol Spec.) and Voltage Drop Protocol Standard Length Voltage Levels AS-Interface 100m to 31.6VDC DeviceNet 500m 11 to 25VDC Foundation Fieldbus 1900m 9 to 32VDC Modbus Voltage Supplied Separately and May be Device Specific

57 Networks – Voltage Drop Issues
Voltage at Field Device: Power Supply Voltage less Cable Voltage Drop less Drop Connectors Example: V (Supply) x V (Trunk Cable) - 1V (Protected Drop Connector) x V (Drop) = 28.1V at Device VCT8 Acceptable Voltage Range 26.5 to 31.6V Voltage = Current x Resistance

58 Product Reference/Protocols

59 Product Reference/Protocols

60 Enclosure Guide

61 Enclosure Guide

62 Optimized Hazard Protection
StoneL Optimized Hazard Protection


Download ppt "Optimized Hazard Protection"

Similar presentations


Ads by Google