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1 FLEX Ex Technical Data 1797 Series Intrinsically Safe I/O Distributed Architecture FLEX Ex TM is a modular I/O system that mounts directly to the controlled equipment in the hazardous area This eliminates the need for IS barriers/isolators and separation of control and process We have taken our experience gained with the standard FLEX I/O TM system and used it to create an intrinsically safe system with the same look, feel, and ease of use FLEX Ex leverages advanced technologies allowing the application to move to a distributed architecture in the hazardous area Allen-Bradley Spares

2 2 Overview FLEX Ex Overall Design of the FLEX Ex System Overview FLEX Ex combines a terminal strip and intrinsic-safety isolation with an I/O interface Use the terminal strip on the terminal base to wire your field devices directly The FlexEx design also offers these features: modularity for distributed IS systems all of the features of a larger, rack-based system installation near the field devices to reduce wiring costs and complexity terminations for all field wiring eliminating the need for marshalling or extra terminal strips ControlNet TM -based networking solution with ControlNet Ex TM products DIN rail mounting FLEX Ex provides additional value if system problems develop The terminal base lets you remove and insert modules under power without rewiring or disrupting your system Combining your field-wiring terminations, IS isolation, and the I/O interface into the same location saves you time, money, and makes your system easier to maintain and troubleshoot Additional benefits include: dual-fault protection IS circuits provide the highest fault tolerance I/O circuitry provides full IS field-device protection modules that are conformally coated to meet the noxious gas requirements of ISA-S severity level G3 for: hydrogen sulfide, sulfur dioxide, chlorine, nitrogen dioxide, hydrogen fluoride, ammonia and ozone the modules themselves are IS protected for installation in hazardous environments FLEX Ex modules may be removed and inserted while operating under power Network module maintenance and cable connections can be made in the hazardous area while the system is in operation and the area is hazardous No equipment shutdown or area purging is necessary during these procedures, as the modules, network, and their connections are intrinsically safe

3 1 1 FLEX Ex Overview 3 ControlNet Ex Synergy The combination of a ControlNet fiber hub (1786-RPA and -RPFM) and a ControlNet Ex fiber hub (1797-RPA and -RPFM) allows for flawless, high-speed, deterministic data flow and messaging between hazardous and safe areas This combination functions as an intrinsically safe isolator between hazardous and safe areas and can provide long-distance communication Safe Area SLC 500 TM processor ControlNet network PLC-5/20C TM processor or PLC-5/40C TM processor ControlLogix TM processor ProcessLogix TM I/O host computer with 1784-KTC card FLEX I/O fiber 1786 fiber hub Hazardous Area 1797 fiber hub FLEX Ex coax The diagnostic capabilities and determinism of the ControlNet network make it an ideal choice for hazardous area applications The redundant media ControlNet Ex communications adapter (1797-ACNR15) is high-speed and capable of communicating with as many as 8 I/O modules for up to 128 I/O points ControlNet and ControlNet Ex repeater hubs facilitate the mixing of IS and non-is systems via a communications link incorporating fiber optics for effective high-speed communication between hazardous and safe areas An intrinsically safe network and I/O system installed in the hazardous area allows your data to be gathered at its origin and transported out of the area with the minimum amount of wiring Cable penetrations into the hazardous area, cable trays, and conduit are all drastically reduced Allen-Bradley Spares

4 4 Overview FLEX Ex Entity-Based Architecture Entity parameters provide a system of quantifying and matching safe levels for voltage, current, inductance, and capacitance when connecting field devices and system devices together Configuration of the FLEX Ex system is based on the entity parameter method Using entity parameters allows high system flexibility in matching field and system devices This provides maximum utility to the IS system designer and installer Entity Parameters FLEX Ex uses entity parameters to rate its intrinsically safe modules Inputs and outputs are specified with: open-circuit voltage (U o or V oc ) short-circuit current (I o or I sc ) allowed capacitance (C o or C a ) allowed inductance (L o or L a ) Switched outputs are specified as if they were inputs Field devices using entity parameters are specified with: maximum input voltage (U i or V max ) maximum input current (I i or I max ) maximum internal capacitance (C i ) maximum internal inductance (L i ) In use, the sum of all the input C i or L i in a control loop cannot exceed the C o or L o and the sum of all the U o or I o cannot exceed the input U i or I i This is not meant to be a design example, only a short explanation of how entity-based architectures help simplify IS system design

5 FLEX Ex Overview 5 Entity Parameters Example An output channel and the valve it will drive are illustrated in the following figure By comparing entity parameters, you can quickly determine the appropriate match 268Ω 21V + sig cable length = 10m C i <10pF/m L i <05uH/m R<01Ω/m P/I transmitter EEx ia IIC T4 U i =30V I i =165mA C i =225nF L i =730uH 22Ω 1797-IE8 Analog Input EEx ia/ib IIB/IIC T4 U o <237V I o <935mA IIB C a =560nF L a =10mH IIC C a =66nF L a =25mH Module U o I o C a L a Module U o <237V I o <925mA C a =66nF L a =25mH < or = < or = > or = > or = < or = < or = > or = > or = Total Loop U i I i C i L i Total Loop U i =30V I i =165mA C i =226nF L i =735uH = = = = = = = = Transmitter U i I i C i L i Transmitter U i =30V I i =165mA C i =225nF L i =730uH Distance Cable (length * C i per length) (length * L a per length) Distance Cable (10m * C i =10pF/m) (10m * L a =05uH/m) In this example, the combination is compatible because the valve can withstand: U i = 30V I i = 165mA These values are higher than what the output can provide: U o = 237V I o = 935mA In the same way, the valve is characterized by: C i = 225nF L i = 730µH These values are lower than what the output allows: C o = 66nF L o = 25mH Allen-Bradley Spares

6 6 Overview FLEX Ex About the FLEX Ex System FLEX Ex consists of three space-saving components: communication (adapters) terminal base units I/O modules Adapter Bus Connectors Terminal Base Keyswitch Flexbus Connector Ex I/O Module 1797-ACNR15 Ex PWR PWR Terminal Strips M Field Power Connection Terminals Use the adapter to power the I/O bus for as many as eight modules Two separate connection terminals for field power let you daisy-chain power connections to adjacent terminal bases depending on power consumption Removable power connections allow for easy wiring Use a the three-tier terminal base to wire directly to field devices Terminate all of your wiring on the terminal base with no need for terminal blocks Use the terminals to daisy-chain power connections to adjacent terminal bases, or connect individual power supplies to each base to isolate modules as dictated by module power requirements Adjust the keyswitch to prevent incorrect module insertion into a preconfigured terminal base Exchange terminal bases without moving other bases in your system Plug the Ex I/O module into the terminal base Use the module to connect to the I/O bus and field devices Remove and insert a module without disturbing field wiring, other I/O modules, or system power

7 FLEX Ex Overview 7 Mount and Remove Your System Easily You can horizontally or vertically mount the FLEX Ex system on a standard 35mm DIN rail The adapter and terminal base easily snap on the DIN rail by hand Use a flat-blade screwdriver to remove components from the DIN rail Screw holes allow you to horizontally or vertically panel-mount your system in an enclosure An example of a DIN-rail mounted system is shown below ATTENTION! When properly installed, FLEX Ex is grounded through the DIN rail to chassis ground Use zinc-plated, yellow-chromated steel DIN rail to assure proper grounding Using other DIN rail materials (eg aluminum, plastic, etc) which can corrode, oxidize, or are poor conductors can result in improper or intermittent platform grounding If installing FLEX Ex on non-recommended DIN rail materials, use the mounting holes provided in each terminal base or a 1794-NM1 mounting kit with approved mounting bracket Use mounting screws with star washers to provide the FLEX Ex platform with a chassis ground connection that is not likely to be affected by shock, vibration, or oxidation over time DIN Rail A-B part no 199-DR1 DIN (35 x 75mm) Screw holes are available for panel-mounting Components are slotted to accept a DIN rail 1797-ACNR15 PWR M Locking tab connector holds terminal base onto DIN rail ATTENTION! The hook (on the terminal base) and adjacent connection point (on the communication adapter) keep the terminal bases tight together Allen-Bradley Spares

8 8 Overview FLEX Ex Design Your Configuration You can use as many as eight terminal bases per adapter This flexibility allows a wide variety of I/O channels per adapter Mix and match digital and analog I/O to meet your application needs Some examples include: 128 digital inputs 64 digital inputs and 16 digital outputs 64 analog inputs 32 analog inputs and 32 analog outputs 32 digital inputs, 8 digital outputs, 24 analog inputs, and 8 analog outputs Any combination of digital I/O or analog modules Adapter As many as eight terminal bases M What this Technical Data Contains Use the following tables to find more information on the FLEX Ex system For Information On See Page Intrinsic Safety Terminology 10 Common Specifications 13 Environmental Conditions 14 Support, Training, and Repair Services 54 For Information On Catalog Number Description See Page Communications Dual Media Adapter 1797-ACNR15/B Dual Media ControlNet Ex 15 Adapter 20 System Repeaters 1797-RPA ControlNet Ex Coax Drop Repeater Module RPFM ControlNet Ex 3km Fiber Media Port Adapter 22 Taps 1797-TPS ControlNet Ex Straight T-Tap TPR ControlNet Ex Right Angle T-Tap TPYS ControlNet Ex Straight Y-Tap TPYR ControlNet Ex Right Angle Y-Tap 23 Terminators 1797-XT ControlNet Ex 75Ω Terminator TCAP ControlNet Tap Terminator 23

9 FLEX Ex Overview 9 For Information On Catalog Number Description See Page Terminal Bases Terminal Base Units 1797-TB3 3-Tier Screw Clamp Terminal Base Unit TB3S 3-Tier Spring Clamp Terminal Base Unit 25 Digital DC Input 1797-IBN16 75V dc 16 pt Non-Isolated NAMUR Input 26 Module DC Output 1797-OB4D 24V dc 4 pt Non-Isolated Source Output Module 28 Analog Analog Input 1797-IE8 8 pt 16 bit Single-Ended Non-Isolated Analog Input Module Analog Input 1797-IE8NF 8 pt 16 bit Single-Ended Non-Isolated Analog Input Module with Noise Filter Analog Output 1797-OE8 8 pt 13 bit Single-Ended Non-Isolated Analog Output Module Specialty Thermocouple/mV/RT DInput 1797-IRT8 8 pt 16 bit Non-Isolated RTD/Thermocouple mv Input Module Frequency Input 1797-IJ2 2 Input Frequency Module 38 Power Supply DC Quad-Ex 1797-PS2N 24V DC In Quad-Ex DC Out Power Supply 41 - Conduit Pipe Thread 1797-PS2E 24V DC In Quad-Ex DC Out Power Supply - Increased Safety 41 Accessories 1797-BOOT ControlNet Ex BNC Boot INS ControlNet Ex Trunk Insulators Kit EXMK FLEX Ex Cable Marking Kit 48 Extender Cables 1794-CE1 FLEX I/O Extender Cable, 03m (1ft) CE3 FLEX I/O Extender Cable, 09m (3ft) 49 Media Bus Isolator Module 1797-BIC Bus Isolator Module - Hazardous Modules to 51 IS Modules 1797-CEC Flexbus Connector 51 Feed Throughs - Flexbus Metric Feed-Through 53 - Flexbus NPT Feed-Through 53 Extender Cables 1797-CE1S FLEX Ex Extender Cable, 03m (1ft) CE3S FLEX Ex Extender Cable, 09m (3ft) Allen-Bradley Spares

10 10 Intrinsic Safety Terminology FLEX Ex Understanding Some Intrinsic Safety Terminology Intrinsic Safety Terminology Read the following sections for more information on the general guidelines of intrinsic safety Hazardous Area Designation A hazardous area is designated as any location in which a combustible material is or may be present in the atmosphere in sufficient concentration to produce an ignitable mixture The North American method identifies these areas by Class, Division, and Group while the IEC () designates these areas by Zone and Gas Group Recently, North America has adopted the Zone method of identifying hazardous locations as an option to the Division method Class Designation Class identifies the type of hazardous atmosphere Class I Class II Class III Gas or vapor Dust Fiber or flying (no group designation) Division/Zone Designations Division/Zone identifies the likelihood of a hazardous atmosphere being present Ignitable mixture present continuously (long periods) Ignitable mixture present intermittently Division Method (North America) Division 1 Ignitable mixture is not normally present Division 2 IEC Standard Zone Method Zone 0 (Zone 20-Dust) Zone 1 (Zone 21-Dust) Zone 2 (Zone 22-Dust)

11 FLEX Ex Intrinsic Safety Terminology 11 Gas/Dust Groups Hazardous locations are grouped according to their ignition properties Typical Gas IEC Gas Group North American Gas Group Acetylene IIC A Hydrogen IIC B Ethylene IIB C Propane IIA D Methane 1 I D 1 Metal Dust - E Coal Dust - F Grain Dust Mining applications under jurisdiction of MSHA Use in Class II and III (Dusts and Fibers) Hazardous Locations (North America) FLEX Ex modules are rated for installation in Class I Division 1 & 2, Groups A-D hazardous areas They are also rated to connect to field devices that are located in Class I, II, or III, Groups A-G hazardous areas If FLEX Ex components are to be installed in a Class II or III location in your application, you must mount them in a suitable, dust-proof enclosure with the appropriate connectors, glans, and seals For example, a NEMA 4 enclosure may be appropriate As always, observe local code requirements when applying your FLEX Ex application Use in Zone Method Dusts and Fibers Hazardous Locations FLEX Ex modules are rated for installation in North American Class I Zone 1 & 2, Groups IIC, IIB & IIA and European Zone 1 & 2, Groups IIC, IIB, & IIA hazardous areas They are also rated to connect to field devices that are located in North American Class I Zone 0, 1, & 2 Groups IIC, IIB & IIA and European Zone 0, 1, & 2, Groups IIC, IIB, & IIA hazardous areas If FLEX Ex components are to be installed in a North American or European Zone method dust or fiber location in your application, you must mount them in a suitable, dust-proof enclosure with the appropriate connectors, glans, and seals For example, a North American NEMA 4 or European IP 6x enclosure may be appropriate Allen-Bradley Spares As always, observe local code requirements when applying your FLEX Ex application

12 12 Intrinsic Safety Terminology FLEX Ex For Zone application, especially in Europe, normal practice calls for the end application to obtain the dust and fiber rating due to strong dependence on wiring and other non-equipment related requirements For example, FLEX Ex s North American Class I Zone 0, 1, & 2 Groups IIC, IIB & IIA and European Zone 0, 1, & 2, Groups IIC, IIB & IIA hazardous area rating is used as the basis for the overall application to gain its dust and fiber certification Methods of Protection The following techniques are rated by methods of protection Symbol for Protection Method Zone Division Technique IEC NEC CEC Permitted Zone Permitted Division Oil Immersion Ex o EEx o AEx o Ex o 1 and 2 * Pressurization Ex p EEx p AEx p Ex p Type X, Y, Z 1 and 2 1 (X, Y) and 2 (Z) Powder Filling Ex q EEx q AEx q Ex q 1 and 2 * Flameproof Ex d EEx d AEx d Ex d 1 and 2 Explosionproof XP 1 and 2 Increased Safety Ex e EEx e AEx e Ex e 1 and 2 * Intrinsic Safety Dual Fault Single Fault Non-Incendive Limited Energy Non-Sparking Enclosed Break Restricted Breathing Simplified Pressurization Ex ia Ex ib Ex nl Ex nv Ex nw Ex nr Ex np EEx ia EEx ib EEx nl EEx nv EEx nw EEx nr EEx np AEx ia AEx ib AEx nl AEx nv AEx nw AEx nr AEx np Ex ia Ex ib Ex nl Ex nv Ex nw Ex nr Ex np IS 0, 1, and 2 1 and 2 1 and 2 NI 2 2 Encapsulation Ex m EEx m Aex m Ex m 1 and 2 * * These protection methods are not recognized in the Division method However, they may be suitable for some North American Division applications Temperature Category The temperature category defines the maximum surface temperature of the device Ratings are given with reference to 40 o C ambient unless otherwise stated T1 450 o C (842 o F) T3A 180 o C (356 o F) T2 300 o C (572 o F) T3B 165 o C (329 o F) T2A 280 o C (536 o F) T3C 160 o C (320 o F) T2B 260 o C (500 o F) T4 135 o C (275 o F) T2C 230 o C (446 o F) T4A 120 o C (248 o F) T2D 215 o C (419 o F) T5 100 o C (212 o F) T3 200 o C (392 o F) T6 85 o C (185 o F) The additional temperature categories highlighted above are for North America only

13 FLEX Ex Intrinsic Safety Terminology 13 The following table illustrates common FLEX Ex system specifications ControlNet Ex System 1797-ACNR15/B 1797-RPA Agency Certification Certificate Dimensions (HxWxD) II (1) 2G SYST EEx ia/ib IIB/IIC T4 DMT 99 ATEX E 065 X - UL, C-UL FM UL, C-UL FM II 2G EEx ib IIB/IIC T4 Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ib IIC T4 Class I Division 1 Groups A-D T4 Class I Zone 1 AEx ib IIC T4 II (1) 2G EEx ia/ib IIB/IIC T4 Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ib IIC T4 Class I Division 1 Groups A-D T4 Class I Zone 1 AEx ib IIC T4 II (1) 2G EEx ia/ib IIB/IIC T4 UL, C-UL Class I Division 1 & 2 Groups A-D T RPFM Class I Zone 1 & 2 AEx ib [ia] IIC T4 FM Class I Division 1 Groups A-D T4 Class I Zone 1 AEx ib IIC T TB3 II 2G EEx ia IIC T4 UL, C-UL Class I Division 1 & 2 Groups A-D T TB3S FM Class I Zone 1 & 2 AEx ia IIC T4 Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ia IIC T IBN OB4D 1797-IE IE8NF 1797-OE IRT IJ PS2N/A 1797-PS2N/B UL, C-UL FM UL, C-UL II (1) 2G EEx ia/ib IIB/IIC T4 Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ib/[ia] IIC T4 Class I Division 1 Groups A-D T4 Class I Zone 1 AEx ib/[ia] IIC T4 Class I Division 1 Groups C-D T4 Class I Division 2 Groups A-D T4 UL, C-UL Class I Division 1 Groups B-D T4 Class I Division 2 Groups A-D T4 FM Mounting - Class I Division 1 Groups B-D T4, Class I Division 2, Groups A-D, T4, Class I Zone 1 IIC IS Power - Class I Division 1&2 Groups A-G T4 Class I Zone 1 AEx [ib] IIC DMT 99 ATEX E 008 X UL, C-UL FM DMT 99 ATEX E 011 X UL, C-UL FM DMT 98 ATEX E 012 X UL, C-UL FM DMT 98 ATEX E 013 X UL, C-UL FM DMT 98 ATEX E 040 X UL, C-UL FM DMT 98 ATEX E 020 X UL, C-UL FM DMT 99 ATEX E 051 X UL, C-UL FM DMT 98 ATEX E 023 X UL, C-UL FM DMT 98 ATEX E 033 X UL, C-UL FM UL, C-UL UL, C-UL FM PS2E EEx de [ib] IIC T4 BVS 98D2055X 94mm x 94mm x 91mm (37in x 37in x 358in) 94mm x 94mm x 69mm (37in x 37in x 27in) 46mm x 94mm x 75mm (18in x 37in x 295in) 174mm x 174mm x 128mm (69in x 69in x 504in) 174mm x 174mm x 280mm (69in x 69in x 110in) Allen-Bradley Spares

14 14 Intrinsic Safety Terminology FLEX Ex 1797-BIC 1797-CEC Agency Certification Certificate Dimensions (HxWxD) II (2)G [EEx ib] IIC FM Nonincendure, use for Class I, Division 2 Groups A-D or Class I, Zone 2 Group IIC Provides intrinsically safe outputs to Class I, Division 1 Groups A-D or Class I, Zone 1 Group IIC FM Nonincendure, use for Class I, Division 2 Groups A-D or Class I, Zone 2 Group IIC DMT 00 ATEX E056 Declaration of Conformity Directive 94/9 EC Zone 2 II 3G EEx na IIC T4 X FM Declaration of Conformity Directive 94/9 EC Zone 2 II 3G EEx na IIC T4 X FM mm x 94mm x 75mm (34in x 37in x 295in) 80mm x 55mm x 69mm (315in x 217in x 272in) C US The following table illustrates FLEX Ex system environmental conditions Environmental Conditions Operational Temperature Storage Temperature Relative Humidity Operating Shock Non-Operating Shock Vibration Noxious Gas Exposure -20 to 70 o C (-4 to 158 o F) -40 to 85 o C (-40 to 185 o F) 5 to 95% noncondensing Tested 15g peak acceleration, 11(+1)ms pulse width Tested 15g peak acceleration, 11(+1)ms pulse width Tested Hz per IEC Tested to severity level G3, ISA-S About Entity Parameters For a complete listing of I/O entity parameters, refer to the FLEX Ex System Certification Reference Manual, publication

15 FLEX Ex Communication System 15 Communication System ControlNet Ex System Diagram 1 CNet Ex trk trm M Safe Area Node 2 Hazardous Area Zone RPA/* or RSD-CFA-ExCN 1797-RPFM/* or RSD-FC-Ex2CN 3km 1797-RPFM/* or RSD-FC-Ex2CN 3km Uo=54V, Io=201mA, F -3 >500kHz Power Supply Ui=95V, Ii=1A, Ci=<120nF, Li=negligible 2 1 Ch0 fiber Ch1 fiber Ch0 fiber Ch1 fiber CNet Ex trk trm ControlNet Ex tap Ci < 60pF ControlNet Ex tap 2 75 Ohm 1W Ci negl Li negl Li < 560nH Li < 1100uH Li < 1100uH coax trunk cable Cable type 1189A, 3092A, or 3092A Blue from manufacturer Belden Wire or type RG6-CNet* Node 1 CNet Ex tap trm Ci<68pF Li negl The ControlNet Ex System is an intrinsically safe system according to EN When installing the system, the certificate of conformity and the national installation regulations must be heeded The components of the ControlNet Ex system and the interconnections are shown on the installation drawing (A-B Pub ) For the transmittal between the safe area and the hazardous area only optical glass-fibers are permitted The diameter of a single glass-fiber must be >6um The power density of the transmitter diode must be <5mW/mm 2 Protect the system against electrostatic charge Post a sign near the main components of the system: Attention! Avoid electrostatic charge Node ACNR15/* or RSD-GW-Ex2CN 3 Node ACNR15/* or RSD-GW-Ex2CN Flexbus Uo=54V, Io=400mA, Po=216W, Co=65µF, Lo=10µH 1 Flexbus Uo=54V, Io=400mA, Po=216W, Co=65µF, Lo=10µH 1 ChA Uo=54V, Io=160mA, F -3 >500kHz ChB Uo=54V, Io=160mA, F -3 >500kHz 2 Power Supply Ui=95V, Ii=1A, Ci=<120nF, Li=negligible ChA Uo=54V, Io=160mA, F -3 >500kHz ChB Uo=54V, Io=160mA, F -3 >500kHz Power Supply Ui=95V, Ii=1A, Ci=<120nF, Li=negligible ControlNet Ex tap ControlNet Ex tap 75 Ohm 1W Ci negl Li negl coax trunk cable The Coax Trunk Cable is permitted to have a minimum length of 1,000m with only 2 connected ControlNet Ex Taps dropping to only 250m with the maximum allowed connected ControlNet Ex Taps of 48 The ambient temperature range of the ControlNet Ex system is -20 to +70 o C Near the main components of the system a plate with the system marking must be attached If the system is installed in a cabinet the plate must be fixed on the inside of the cabinet door *RG6-CNet is defined as: Cable Impedance=75 Ohm + or -3 Ohm Cable Capacitance<594nF per 100m Cable Resistance>908 Ohm per 100m Cable Attenuation (-20to+70 o C) 02MHz > 093dB/100m 5MHz > 139dB/100m 05MHz > 095dB/100m 10MHz >186dB/100m 1MHz > 107dB/100m 20MHz > 273dB/100m 2MHz > 116dB/100m 50MHz > 433dB/100m Hazardous Area Zone 0 Allen-Bradley Spares

16 16 Communication System FLEX Ex UL, C-UL ControlNet Ex System Diagram Non-Hazardous Location 1786-RPFM or any associated apparatus where the light emitting diode output is <5mW/mm 2 Hazardous (Classified) Location Zone 0, 1 or 2, IIC Class I, Zones 0, 1 and 2, Groups IIC, IIB, IIA Class I Division 1 and 2, Groups A, B, C, D Class II, Division 1 and 2, Groups E, F, G Class III, Division 1 and 2 Node RPA 1797-RPFM 1797-RPFM Power Supply Vmax=95V, Imax=1A, Ci<120nF, Li=0 Ch0 Ch1 Ch1 To any approved device or associated apparatus with Entity Concept parameters of V oc <95V and I sc <1A 1 Ch0 fiber optic cable Node 1 2 ControlNet Ex tap ControlNet Ex tap CNet Ex trk trm CNet Ex tap trm The ambient temperature range of the ControlNet Ex system is -20 to +70 o C coax trunk cable Hazardous (Classified) Location Zone 1 or 2, IIC Class I, Zones 1 and 2, Groups IIC, IIB, IIA Class I Division 1 and 2, Groups A, B, C, D 3 Node ACNR15 Node ACNR15 any IS device with entity concept parameters V max, I max C i, L i ) appropriate for connection to associated apparatus with entity concept parameters listed in Table 1 Maximum devices=8 1 any IS device with entity concept parameters V max, I max C i, L i ) appropriate for connection to associated apparatus with entity concept parameters listed in Table 1 Maximum devices=8 1 2 ChA ChB To any approved device or associated apparatus with Entity Concept parameters of V oc <95V and I sc <1A 1 Power Supply Vmax=95V, Imax=1A, Ci<120nF, Li=0 ChA ChB To any approved device or associated apparatus with Entity Concept parameters of V oc <95V and I sc <1A 1 Power Supply Vmax=95V, Imax=1A, Ci<120nF, Li=0 ControlNet Ex tap coax trunk cable 2 ControlNet Ex tap CNet Ex trk trm 2 Hazardous (Classified) Location Zone 1 or 2, IIC Class I, Zones 1 and 2, Groups IIC, IIB, IIA Class I Division 1 and 2, Groups A, B, C, D Class II, Division 1 and 2, Groups E, F, G Class III, Division 1 and M 1 1

17 1 1 FLEX Ex Communication System 17 FM ControlNet Ex System Diagram Hazardous (Classified) Location Class I, Zone 1, Group IIC Class I Division 1, Groups A, B, C, D ì Node 2 The ambient temperature range of the ControlNet Ex System is -20 o C to +70 o C 1797-RPFM 1797-RPFM 1797-RPA For connection to other I/O modules, refer to General FM Certification Information in publication on page 31-1 Node ACNR15 For connection to other I/O modules, refer to General FM Certification Information in publication on page 31-1 Node ACNR15 ó Ch1 Ch0 Ch1 Ch0 From FM approved 1797-PS2N 7 Vmax=95V Imax=1A Ci<=120nF Li=0 fiber optic cable û ú ö Vmax=95V Imax=1A Ci<=120nF Li=0 Vmax=95V Imax=1A Ci<=120nF Li=0 ó From FM approved 1797-PS2N 7 ChB ChA From FM approved 1797-PS2N 7 ChA ChB ó û û ó 8 Non-Hazardous Location 1786-RPFM or Hazardous (Classified) Location Class I, Zone 0, 1, 2 Group IIC, IIB, IIA Class I Division 1, Groups A, B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1 CNet Ex trk trm 7 Node 1 coax trunk cable ó ControlNet Ex tap ControlNet Ex tap ControlNet Ex tap ControlNet Ex tap CNet Ex trk trm CNet Ex trk trm 7 Hazardous (Classified) Location Any associated apparatus where the light emitting diode output is <5mW/mm 2 or total <1mW Class I, Zone 1, 2 Group IIC, IIB, IIA Class I Division 1, Groups A, B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1 8 coax trunk cable ó Any associated apparatus where the light emitting diode output is <5mW/mm 2 or total <1mW Any associated apparatus where the light emitting diode output is <5mW/mm 2 or total <1mW ç ç Allen-Bradley Spares

18 18 Communication System FLEX Ex Describing the ControlNet Ex System Diagram A maximum of 48 ControlNet Ex nodes may be connected together by 250m of coax cable and 48 taps The distance increases to 1000m when you use only 2 taps See the table below for more information The fiber media of the 1797-RPFM can be installed in a hazardous location (Zone 0, 1 or 2; Class I, Zones 0, 1, and 2; Class I, Division 1 and 2; Class II, Division 1 and 2; Class III, Division 1 and 2) to connect two 1797-RPFM modules or they can be installed through different locations into the non-hazardous location to connect the 1797-RPFM with any approved associated apparatus All cables and fiber media that are not light blue must be marked as IS using the 1797-EXMK marking kit or other locally approved IS identification and/or segregation method During the installation of the ControlNet Ex system, all metallic parts must be isolated to prevent an earth connection (high voltage withstanding of isolating material must be > 500V ac) System Diagram Name 1797-RPA 1797-RPA ControlNet Ex Modular Repeater Adapter Catalog Number Catalog Name Description 1797-RPFM 1797-RPFM ControlNet Ex Fiber Repeater Module, Medium Distance 1797-ACNR ACNR15 Redundant Media ControlNet Ex Adapter CNet Ex Tap Trm 1797-TCAP ControlNet Ex Tap (Dummy) Terminator Represents one ControlNet Ex node and must be connected to a coax trunk cable by 1797-TPx Allows connection of a maximum of two devices per 1797-RPA and is powered directly by 1797-RPA Represents one ControlNet Ex node and must be connected to a coax trunk cable by 1797-TPx -each one with two redundant output channels that are connected to different ControlNet Ex networks (coax cables and 1797-TPx) Represents one ControlNet Ex node and is a simple capacitor (56pF) with a coax connector ControlNet Ex Tap 1797-TPx ControlNet Ex Coax Tap Four types of connections available: S (straight t-tap), R (right angle t-tap), YS (straight y-tap), and YR (right angle y-tap) - a maximum of 48 taps can be connected together by coax trunk cable CNet Ex Trk Trm 1797-XT ControlNet Ex Trunk Terminator Coax Trunk Cable 1786-RG6 Quad-Shield, RG-6 75Ω Coax Trunk Cable None None Standard Coax Trunk Cable BNC Couplers Simple resistor (75Ω) with coax connector that must be on each end of the ControlNet Ex coax trunk for termination Maximum (functional) length between TPx is 3280ft (1000m) - each 1797-TPx reduces the (functional) coax cable length by 534ft (163m) Different standard cable couplers, 90 o, 180 o, etc

19 FLEX Ex Communication System 19 Certified Equivalent ControlNet Ex System Diagram Items You may use these items as equivalents for the items shown on the system diagram System Diagram Name Catalog Number Source 1797-RPA 1797-RPA 1 Allen-Bradley 1797-RPFM 1797-RPFM 1 Allen-Bradley 1797-ACNR ACNR15 1 Allen-Bradley Coax Trunk Cable RG6 Allen-Bradley 3092A 3 Belden Wire & Cable Co 3092A with blue jacket Belden Wire & Cable Co ControlNet Ex Tap 1797-TPx Allen-Bradley CNet Ex Trk Trm 1797-XT Allen-Bradley CNet Ex Tap Trm 1797-TCAP Allen-Bradley 1 For complete information on interpreting the system drawings, refer to the FLEX Ex System Certification Reference Manual, publication In addition to these cable types, the following specification can be followed to allow additional types: Cable Impedance = 75Ω + 3Ω Cable Capacitance = <594nF per 100m Cable Resistance = >908Ω per 100m Cable Attenuation 02MHz > 093dB/100m5MHz > 139dB/100m (-20 to +70 o C) 05MHz > 095dB/100m10MHz > 186dB/100m 1MHz > 107dB/100m20MHz > 273dB/100m 2MHz > 116dB/100m50MHz > 433dB/100m 3 Belden Wire & Cable 1189A may be used, but with functional loss of communication distance and/or nodes Allen-Bradley Spares

20 20 Dual Media ControlNet Ex 15 Adapter Cat No 1797-ACNR15 FLEX Ex Dual Media ControlNet Ex 15 Adapter Cat No 1797-ACNR ACNR15 PWR Product Features Provides interface from the local backplane I/O bus to the network fieldbus Provides power to the backplane to run bus interface circuitry aboard I/O modules Capable of accepting dual ControlNet Ex cable media Customer Connections Power Supply +V -V Channel A Channel B Network uc Dual Port RAM uc Bus Flexbus ACNR15 Specifications I/O Capacity 8 modules IS Media Type EEx ib IIB/IIC T4, AEx ib IIC T4, Class I, Division 1 Groups A-G T4 IS Module Type EEx ib IIB/IIC T4, AEx ib IIC T4, Class I Division 1 Groups A-D T4 Communication Rate 5m bit/s ControlNet Ex BNC (ChA and Oscillation powered by: ChB) U o < 54V dc I o < 160mA ac coupled with high-pass filter f -3 > 500kHz Indicators Comm A red/grn Comm B red/grn Module Status red/grn Power grn Output (Intrinsically Safe) (16 position male/female flexbus connector) Isolation Path Flexbus to Power Supply Flexbus to ControlNet ControlNet Ex Node to Other Node ControlNet Ex to Power Supply Power Supply (+V, -V Intrinsically Safe) U o < 58V dc I o < 400mA P o < 216W L o < 10µH C o < 65µF Galvanic to DIN EN50020 Galvanic functional Galvanic functional Galvanic to DIN EN50020 U i < 95V dc I i < 1A P i < 95W L i = Negligible C i < 120nF 1797-ACNR15 Specifications Power Consumption 85W Power Dissipation 85W Thermal Dissipation 29 BTU/hr Conductor Wire Size 12 gauge (4mm 2 ) stranded maximum 3/64in (12mm) insulation maximum Weight Approximately 200g Environmental Conditions Operational Temperature -20 to 70 o C (-4 to 158 o F) Storage Temperature -40 to 85 o C (-40 to 185 o F) Relative Humidity 5 to 95% noncondensing Shock Operating Tested 15g peak acceleration, 11 (±1)ms pulse width Non-Operating Tested 15g peak acceleration, 11 (±1)ms pulse width Vibration Tested Hz per IEC Agency Certification II 2G EEx ib IIB/IIC T4 UL, C-UL Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ib IIC T4 FM Class I Division 1 Groups A-D T4 Class I Zone 1 AEx ib IIC T4 Certificates DMT 98 ATEX E008 X UL, C-UL UL Certificate Number US Class I Division 1 Hazardous FM FM Certificate Number C

21 FLEX Ex ControlNet Ex Coax Drop Repeater Module Cat No 1797-RPA 21 ControlNet Ex Coax Drop Repeater Module Cat No 1797-RPA Product Features COMM STATUS MODULE STATUS 1797-RPA REPEATER ADAPTER PWR Functions as part of the fiber repeater hub within the hazardous area to extend the length of the ControlNet Ex segments to interlink systems all operating within the area Functions as the intelligent starter block for a multiport repeater 1 +V 2 -V 3 +V 4 -V Configured with at least one media adapter Customer Connections power supply +V -V channel network bus fiber hub bus uc uc 1797-RPA Specifications I/O Capacity 2 fiber modules IS Media Type EEx ib IIB/IIC T4, AEx ib IIC T4, Class I, Division 1 Groups A-G T4 IS Module Type EEx ib IIB/IIC T4, AEx ib IIC T4, Class I Division 1 Groups A-D T4 Communication Rate 5m bit/s ControlNet Ex BNC Oscillation powered by: U o < 54V dc I o < 201mA ac coupled with high-pass filter f > 500kHz Indicators Comm green/red Module green/red Power green Output (Intrinsically Safe) (30 pin male TTL bus connector) Isolation Path Bus to Power Supply Adapter to Adapter ControlNet Ex Node to Other Nodes ControlNet to Power Supply Manufacturer specific bus U o < 54V I o < 201mA P o < 109W L o < 045mH C o < 71µF Galvanic to DIN EN50020 Galvanic functional Galvanic functional Galvanic to DIN EN RPA Specifications Thermal Dissipation 29 BTU/hr Conductors Wire Size 12 gauge (4mm 2 ) stranded maximum 3/64in (12mm) insulation maximum Dimensions 94mm x 94mm x 91mm (37in x 37in x 358in) Weight Approximately 200g Environmental Conditions Operational Temperature -20 to 70 o C (-4 to 158 o F) Storage Temperature -40 to 85 o C (-40 to 185 o F) Relative Humidity 5 to 95% noncondensing Shock Operating Tested 15g peak acceleration, 11 (±1)ms pulse width Non-Operating Tested 15g peak acceleration, 11 (±1)ms pulse width Vibration Tested Hz per IEC Agency Certification II (1) 2G EEx ia/ib IIB/IIC T4 UL, C-UL Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ib IIC T4 FM Class I Division 1 Groups A-D T4 Class I Zone 1 AEx ib IIC T4 Certificates DMT 98 ATEX E011 X UL, C-UL UL Certificate Number Power Supply (-V, +V Intrinsically Safe) U i < 95V dc I i < 1A C US Class I Division 1 Hazardous P i < 95W L i = negligible C i < 120nF FM FM Certificate Number Power Consumption Allen-Bradley 85W Spares Power Dissipation 85W

22 22 ControlNet Ex 3km Fiber Media Port Adapter Cat No 1797-RPFM FLEX Ex ControlNet Ex 3km Fiber Media Port Adapter Cat No 1797-RPFM Recv Xmit Chan 1 Chan 2 Customer Connections 1797-RPFM FIBER MODULE MEDIUM RANGE Recv Xmit Product Features Functions as part of the fiber repeater hub within the hazardous area to extend the length of the ControlNet Ex segments to interlink systems all operating within the area Functions as a non-intelligent fiber to backplane conversion device Converts glass fiber infrared LED media signals to backplane signals for use by the coax drop repeater module (cat no 1797-RPA) channel receiver transmitter receiver bus fiber hub bus channel transmitter proc RPFM Specifications IS Media Type EEx ia IIB/IIC T4, AEx ia IIC T4, Class I, II, III Division 1 & 2 Groups A-G T4 IS Module Type EEx ib IIB/IIC T4, AEx ib IIC T4, Class I Division 1 & 2 Groups A-D T4 Communication Rate 5m bit/s Approximate Fiber Media 3km Length Fiber Type 625/125 mm Fiber Termination Type ST (plastic or ceramic) Fiber Operating Wavelength 1300 nm Optical Power Budget 133 db Fiber Optic Transmitter Ch1 and Ch2 Indicators Input (Intrinsically Safe) (30 pin female TTL bus connector) Output (Intrinsically Safe) (30 pin male TTL bus connector) Isolation Path Bus to ControlNet Optical peak output power P optical < 1mW Channel 1 status - green Channel 2 status - green U i < 54V I i < 201mA P i < 11W L i < 15µH C i < 41µF U o < 54V I o < 201mA P o < 11W L o < 045mH C o < 71µF Galvanic to DIN EN RPFM Specifications Power Consumption Included in 1797-RPA Power Dissipation Included in 1797-RPA Thermal Dissipation Included in 1797-RPA Weight Approximately 100g Dimensions 94mm x 94mm x 91mm (37in x 37in x 358in) Environmental Conditions Operational Temperature -20 to 70 o C (-4 to 158 o F) Storage Temperature -40 to 85 o C (-40 to 185 o F) Relative Humidity 5 to 95% noncondensing Shock Operating Tested 15g peak acceleration, 11 (±1)ms pulse width Non-Operating Tested 15g peak acceleration, 11 (±1)ms pulse width Vibration Tested Hz per IEC Agency Certification II (1) 2G EEx ia/ib IIB/IIC T4 UL, C-UL Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ib [ia] IIC T4 FM Class I Division 1 Groups A-D T4 Class I Zone 1 AEx ib IIC T4 Certificates DMT 98 ATEX E011 X UL, C-UL UL Certificate Number US Class I Division 1 Hazardous FM FM Certificate Number C

23 FLEX Ex ControlNet Ex Taps and Terminators Cat Nos 1797-TPS, -TPR, -TPYS, -TPYR, -XT and -TCAP 23 ControlNet Ex Taps and Terminators Cat Nos 1797-TPS, -TPR, -TPYS, -TPYR, -XT and -TCAP ControlNet Ex Straight T-Tap Cat No 1797-TPS ControlNet Ex Right-Angle T-Tap Cat No 1797-TPR ControlNet Ex Straight Y-Tap Cat No 1797-TPYS ControlNet Ex Right-Angle Y-Tap Cat No 1797-TPYR ControlNet Ex 75Ω Terminator Cat No 1797-XT ControlNet Tap Terminator Cat No 1797-TCAP Allen-Bradley Spares

24 24 3-Tier Screw Clamp Terminal Base Unit Cat No 1797-TB3 FLEX Ex 3-Tier Screw Clamp Terminal Base Unit Cat No 1797-TB3 ATTENTION! ATTENTION! Make certain that the hook on the terminal base you are installing is properly hooked into the adjacent terminal base/adapter Failure to lock the hook into the adjacent base/adapter can result in loss of communication on the backplane Do not force the terminal base into the adjacent base/adapter Forcing the units together can bend or break the hook and allow the units to separate and break communication over the backplane The 1797-TB3 terminal base unit is intended for users preferring the screw-type wire retention method You can use the 1797-TB3 terminal base unit with any module on the FLEX Ex system Specific terminal function is governed by the I/O module itself Check the installation instructions for each module to determine the specific terminal functions Specifications TB3 Number of Terminals 1 row of 16, 2 rows of 18 Terminal Screw Torque 7-9 inch-pounds Terminals Assignments 1 Only for intrinsically safe circuits +34, -35, +50, -51, and 96 U i <10V dc pin i female I/O connector pins i 30-32, 62-64, i I i C i <25A < 1nF 36, 49 All Other Terminals L i Negligible Must not be used for any connection U i <30V dc I i <100mA C i <1nF L i Negligible Specifications TB3 Flexbus Connection U i <10V dc Intrinsically Safe I i <400mA C i <1nF L i Negligible Isolation Voltage Channel-to-channel isolation determined by inserted module Weight 200g (approximately) Dimensions (with module installed in base)inches 37H x 37W x 27D (Millimeters) (94H x 94W x 69D) Environmental Conditions Operational Temperature -20 to 70 o C (-4 to 158 o F) Storage Temperature -40 to 85 o C (-40 to 185 o F) Relative Humidity 5 to 95% noncondensing Shock Operating Tested 15g peak acceleration, 11 (±1)ms pulse width Tested 15g peak acceleration, 11 (±1)ms pulse width Non-Operating Vibration Tested Hz per IEC Conductors Wire Size 12 gauge (4mm 2 ) stranded maximum 12mm (3/64in) insulation maximum Agency Certification II 2G EEx ia IIC T4 UL, C-UL Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ia IIC T4 FM Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ia IIC T4 Certificates DMT 98 ATEX E012 U UL, C-UL UL Certificate Number C US Class I Division 1 Hazardous FM FM Certificate Number Termination connections are unique with each I/O module Refer to the appropriate I/O module s installation instructions The 1797-TB3 terminal base also has connections for cold junction compensation and terminals designated for shield termination to chassis ground The terminal base is equipped with a factory-installed tab cover for the backplane bus connection The tab cover may be removed only when the terminal base unit is connected to other terminal base units or 1794-CE1 or -CE3 extender cables Wiring Connections for Terminal Base 1797-TB3 A B C V -V +V -V No connections allowed to terminals 36 and

25 FLEX Ex 3-Tier Spring Clamp Terminal Base Unit Cat No 1797-TB3S 25 3-Tier Spring Clamp Terminal Base Unit Cat No 1797-TB3S ATTENTION! ATTENTION! Make certain that the hook on the terminal base you are installing is properly hooked into the adjacent terminal base/adapter Failure to lock the hook into the adjacent base/adapter can result in loss of communication on the backplane Do not force the terminal base into the adjacent base/adapter Forcing the units together can bend or break the hook and allow the units to separate and break communication over the backplane The 1797-TB3S terminal base unit is intended for users preferring the spring-type wire retention method You can use the 1797-TB3S terminal base unit with any module on the FLEX Ex system Specific terminal function is governed by the I/O module itself Check the installation instructions for each module to determine the specific terminal functions The 1797-TB3S terminal base has 36 wiring connections to/from a plug-in module The use of each terminal depends on the module mounted in this base It also has connections for cold junction compensation and terminals designated for shield termination to chassis ground Specifications TB3S Number of Terminals 1 row of 16, 2 rows of 18 Number of Terminals 1 row of 16, 2 rows of 18 Terminal Type Spring-clamp - To open, insert bladed screwdriver ( in/ mm) and lift up Terminals Assignments 1 Only for intrinsically safe circuits +34, -35, +50, -51, and 96 U i <10V dc pin female I/O connector I i <25A pins i 30-32, 62-64, i C i <1nF L i Negligible 36, 49 Must not be used for any connection All Other Terminals U i <30V dc I i <100mA C i <1nF L i Negligible Flexbus Connection U i <10V dc Intrinsically Safe I i <400mA C i <1nF L i Negligible Isolation Voltage Channel-to-channel isolation determined by inserted module Weight 200g (approximately) Dimensions (with module installed in base)inches 37H x 37W x 27D (Millimeters) (94H x 94W x 69D) Environmental Conditions Operational Temperature -20 to 70 o C (-4 to 158 o F) Storage Temperature -40 to 85 o C (-40 to 185 o F) Relative Humidity 5 to 95% noncondensing Shock Operating Tested 15g peak acceleration, 11 (±1)ms pulse width Tested 15g peak acceleration, 11 (±1)ms pulse width Non-Operating Vibration Tested Hz per IEC Conductors Wire Size 12 gauge (4mm 2 ) stranded maximum 12mm (3/64in) insulation maximum Agency Certification II 2G EEx ia IIC T4 UL, C-UL Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ia IIC T4 FM Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ia IIC T4 Certificates DMT 98 ATEX E012 U UL, C-UL UL Certificate Number C US Class I Division 1 Hazardous FM FM Certificate Number Termination connections are unique with each I/O module Refer to the appropriate I/O module s installation instructions The terminal base is equipped with a factory installed tab cover for the backplane bus connection The tab cover may be removed only when the terminal base unit is connected to other terminal base units or 1794-CE1 or -CE3 extender cables Row A Row B Row C Label placed at top of wiring area Row A Row B Allen-Bradley Spares Row C +V-V +V-V No connections allowed to terminals 36 and

26 26 16 pt Non-Isolated NAMUR Input Module Cat No 1797-IBN16 FLEX Ex 16 pt Non-Isolated NAMUR Input Module Cat No 1797-IBN16 Ex 1797-IBN16 PWR Product Features 16 single-ended input channels referenced to a single common Maximum no load voltage/short-circuit current: U/V = 75V dc/ I = 75mA Yellow LED to indicate input state, input ON = LED ON Fault detection, fault bits in data table and LED (per channel) blinking red (1Hz) DIN 19234, NAMUR compatible Switching points/hysteresis: I = 12mA to 21mA/02mA Input pulse width on/off: >500µs/>500µs Lead breakage threshold: I<035mA Lead breakage defeat on four-channel group basis via module DIP switch selection Fault detection can be disabled via data table Input frequency up to 1000Hz Programmable digital input filtering 1 to 33ms (OFF-ON and ON-OFF) All channels updated to flexbus<500µs Module field-side power consumption: 28W Customer Connections lead break defeat +V -V Power Supply Flexbus Bus + ~15K NAMUR Prox µc - ~9K

27 FLEX Ex 16 pt Non-Isolated NAMUR Input Module Cat No 1797-IBN16 27 Terminal Base Assignment Row A Row B Ch 0 Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 Ch 6 Ch Ch 8 Ch 9 Ch 10 Ch 11 Ch 12 Ch 13 Ch 14 Ch 15 Row C V -V +V -V No connection allowed to terminals 36 and Specifications IBN16 Number of Inputs 16 (1 group of 16), non-isolated, sinking IS Input Type EEx ia IIB/IIC T4, AEx ia IIC T4, Class I, II, III Division 1 Group A-G T4 IS Module Type EEx ib IIB/IIC T4, AEx ib IIC T4, Class I, Division 1 & 2 Group A-D T4 Input Type DIN19234, NAMUR compatible ON-State Current 21mA OFF-State Current 12mA Hysteresis 02mA Input Frequency 1000Hz maximum Input Pulse Width >500µs on or off Maximum Load Voltage U/V = 75V dc Short Circuit Current I = 75mA Short Circuit Threshold I > 6mA Lead Breakage Threshold I < 035mA Input Delay Times OFF to ON ON to OFF Indicators (field side indication, customer device driven) Output (intrinsically safe) (16 pin male and female flexbus connector) Isolation Path Input to power supply Input to flexbus Input to input Power supply to flexbus Power Supply (+V, -V intrinsically safe) 1ms, 2ms, 3ms, 5ms, 9ms, 17ms, 33ms 1ms, 2ms, 3ms, 5ms, 9ms, 17ms, 33ms 1ms default - selectable thru output image table (see Setting Input Filter Times) 16 yellow status indicators 16 red fault indicators 1 green module power indicator U i < 58V dc I i < 400mA L i = Negligible C i = Negligible Isolation Type Galvanic to DIN EN50020 Galvanic to DIN EN50020 None Galvanic to DIN EN50020 U i < 95V dc I i < 1A L i = Negligible C i = Negligible Module Location Conductor Wire Size Dimensions Weight Keyswitch Position 6 Environmental Conditions Operational Temperature Storage Temperature Relative Humidity Cat No 1797-TB3 or -TB3S Terminal Base Unit 12 gauge (4mm 2 ) stranded maximum 3/64in (12mm )insulation maximum 46mm x 94mm x 75mm (18in x 37in x 295in) 200g (approximate) Module Field-Side Power 28W Consumption Power Dissipation Allen-Bradley 28W Spares Thermal Dissipation Maximum 96 BTU/hr Shock Vibration Operating Nonoperating Agency Certification UL, C-UL FM Certificates -20 to +70 o C (-4 to +158 o F) -40 to +85 o C (-40 to +185 o F) 5 to 95% noncondensing Tested to 15g peak acceleration, 11(+1)ms pulse width Tested to 15g peak acceleration, 11(+1)ms pulse width Tested Hz per IEC II (1) 2G EEx ia/ib IIB/IIC T4 Class I Division 1 & 2 Groups A-D T4 Class I Zone 1 & 2 AEx ib/[ia] IIC T4 Class I Division 1 Groups A-D T4 Class I Zone 1 AEx ib/[ia] IIC T4 DMT 98 ATEX E013 X UL, C-UL UL Certificate Number C US Class I Division 1 Hazardous FM FM Certificate Number

28 28 24V dc 4 pt Non-Isolated Source Output Module Cat No 1797-OB4D FLEX Ex 24V dc 4 pt Non-Isolated Source Output Module Cat No 1797-OB4D Ex 1797-OB4D PWR Product Features output channels referenced to a single supply Functional data: U = 12V at I = 45mA Yellow LED to indicate output state, output ON = LED ON Fault indication, signal to the backplane and LED (per channel) blinking red for fault Output wire-off detection Customer Connections Output wire-off detection on per channel basis via module data bit Electronically short circuit protected, fault reported to controller All channels updated from the backplane every 2ms Output fault state programmable flexbus bus +V -V + power supply valve audible alarm solenoid uc - Terminal Base Assignment Row A ch0 ch1 ch2 ch Row B Row C V -V +V -V No connections allowed to terminals 2, 3, 6, 7, 10, 11, 14, 15, 17 to 32, 36, 37, 38, 39, 46, 47, 48,