FLEX Ex System Certification

FLEX Ex System Certification 1797 Series Reference Manual

Important User Information Because of the variety of uses for the products described in this publication, those responsible for the application and use of this control equipment must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. The illustrations, charts, sample programs and layout examples shown in this guide are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Allen-Bradley does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication. Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application, Installation and Maintenance of Solid-State Control (available from your local Allen-Bradley office), describes some important differences between solid-state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication. Reproduction of the contents of this copyrighted publication, in whole or part, without written permission of Rockwell Automation, is prohibited. Throughout this manual we use notes to make you aware of safety considerations: ATTENTION! Identifies information about practices or circumstances that can lead to personal injury or death, property damage or economic loss Attention statements help you to: identify a hazard avoid a hazard recognize the consequences IMPORTANT Identifies information that is critical for successful application and understanding of the product. Allen-Bradley and FLEX Ex are trademarks of Rockwell Automation

European Communities (EC) Directive Compliance If this product has the CE mark it is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives. EMC Directive This product is tested to meet the Council Directive 89/336/EC Electromagnetic Compatibility (EMC) by applying the following standards, in whole or in part, documented in a technical construction file: EN 50081-2 EMC Generic Emission Standard, Part 2 Industrial Environment EN 50082-2 EMC Generic Immunity Standard, Part 2 Industrial Environment This product is intended for use in an industrial environment. Low Voltage Directive This product is tested to meet Council Directive 73/23/EEC Low Voltage, by applying the safety requirements of EN 61131-2 Programmable Controllers, Part 2 - Equipment Requirements and Tests. For specific information required by EN 61131-2, see the appropriate sections in this publication, as well as the Allen-Bradley publication Industrial Automation Wiring and Grounding Guidelines For Noise Immunity, publication 1770-4.1. This equipment is classified as open equipment and must be mounted in an enclosure during operation to provide safety protection.

Notes:

Summary of Changes Changed Items These items changed since the last printing of this FLEX Ex System Certification Reference Manual, publication 1797-6.5.6: Changed Item Page Methods of Protection P-6 General CENELEC Certification Information Ex Directive 1-2 ControlNet Ex System Zone Information 2-3 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector CENELEC Information 15-1 General UL, cul Certification Information UL, C-UL I/O Entity Parameters 16-2 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector UL, C-UL Information 30-1 General FM Certification Information FM I/O Entity Parameters 31-3 1797-TB3 FLEX Ex Terminal Base Unit FM Certificate Number 3009806 33-3 1797-TB3S FLEX Ex Terminal Base Unit FM Certificate Number 3009806 34-3 1797-IBN16 FLEX Ex 16 NAMUR Input Module FM Certificate Number 3009806 35-2 1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module FM Certificate Number 3009806 36-2 1797-IE8 FLEX Ex 8 Input Analog Module FM Certificate Number 3009806 37-2 1797-IE8NF FLEX Ex 8 Input Analog Module with Noise Filter FM Certificate Number 3009806 38-2 1797-OE8 FLEX Ex 8 Output Analog Module FM Certificate Number 3009806 39-2 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module FM Certificate Number 3009806 40-2 1797-IJ2 FLEX Ex Frequency Input Module FM Certificate Number 3009806 41-2 1797-PS2N/A FLEX Ex Power Supply Agency Certification 42-2 1797-PS2N/A FLEX Ex Power Supply FM Certificate Number 3009806 42-2 1797-PS2N/A FLEX Ex Power Supply FM I/O Entity Parameters 42-2 1797-PS2N/A FLEX Ex Power Supply FM I/O Entity Parameters Descriptions 42-3 42-4 1

Summary of Changes 2 Changed Item 1797-ACNR15/B ControlNet Ex Redundant Media Adapter FM Certificate Number 3009806 1797-RPA ControlNet Ex Modular Repeater Adapter and 1797-RPFM Fiber Repeater Module, Medium Distance Agency Certification FM Certificate Number 3009806 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector FM Information Page 43-1 44-2 44-2 45-1

Preface What Is Intrinsically Safe? According to Article 504 of the National Electrical Code, NFPA 70, an intrinsically safe (I/S) product is defined as one in which no spark or thermal effect generated during normal functioning and/or during specific fault conditions is able to ignite a given explosive atmosphere. One example of an I/S product is FLEX Ex distributed I/O control. What are Product Certifications? A product certification is a guarantee that the product has been designed and manufactured with the required I/S specifications and protection. Considering the potential danger in hazardous locations, product certification is required for all I/S products. Three Types of Product Certifications In this reference manual, we describe three types of product certifications and how they relate to FLEX Ex products: CENELEC - European Electrotechnical Committee for Standardization. This is the standard in all European Union countries. UL and C-UL - Underwriters Laboratories (UL in the United States and C-UL in Canada) FM - Factory Mutual, another available certifying body in the United States All FLEX Ex products are certified to CENELEC, UL, C-UL and FM standards. What are Entity Parameters? 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. FLEX Ex uses entity parameters to quantify safe levels when connecting I/O modules to field devices. 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 ) 1

Preface 2 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 and L i in a control loop cannot exceed the C o and L o. Also, the sum of all the U o and I o cannot exceed the input U i and I i. The following is a short explanation of how entity-based architectures help simplify IS system design. 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 <0.5uH/m R<0.1Ω/m P/I transmitter EEx ia IIC T4 U i =30V I i =165mA C i =22.5nF L i =730uH 22Ω 1797-IE8 Analog Input EEx ia/ib IIB/IIC T4 U o <23.7V I o <93.5mA IIB C a =560nF L a =10mH IIC C a =66nF L a =2.5mH Module U o I o C a L a Module U o <23.7V I o <92.5mA C a =66nF L a =2.5mH < 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 =22.6nF L i =735uH = = = = = = = = Transmitter U i I i C i L i Transmitter U i =30V I i =165mA C i =22.5nF 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 =0.5uH/m) 40052 In this example, the combination is compatible because the valve can withstand: U i = 30V I i = 165mA

Preface 3 These values are higher than what the 1797-IE8 can provide: U o = 23.7V I o = 93.5mA In the same way, the valve is characterized by: C i = 22.5nF L i = 730µH These values are lower than what the 1797-IE8 allows: C o = 66nF L o = 2.5mH Intrinsic Safety Terminology The following sections describe key terms used in this reference manual: 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 (CENELEC) 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 I Class III Gas or vapor Dust Fiber or flying (no group designation)

Preface 4 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) 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 - - 1 Mining applications under jurisdiction of MSHA.

Preface 5 FLEX Ex usage 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 installed in a Class II or III location in your application, you can 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. FLEX Ex usage 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 installed in a North American or European Zone method dust or fiber location in your application, you can mount them in a suitable enclosure with the appropriate connectors, glans, and seals. For example, a North American NEMA 4 or better enclosure may be appropriate. As always, observe local code requirements when applying your FLEX Ex application. 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 gains its dust and fiber certification.

Preface 6 Methods of Protection The following techniques are rated by methods of protection. Symbol for Protection Method Zone Division Technique IEC CENELEC 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.

Preface 7 Understanding the Layout of this Manual This reference manual consists of three sections: CENELEC Certification Information UL, C-UL Certification Information FM Certification Information Each section details the specific certification for each FLEX Ex product as shown in the following tables: CENELEC Certification Information For Information On Refer to this Chapter CENELEC Certification Information General CENELEC Certification Information 1 ControlNet Ex System 2 1797-TB3 1797-TB3 FLEX Ex Terminal Base Unit 3 1797-TB3S 1797-TB3S FLEX Ex Terminal Base Unit 4 1797-IBN16 1797-IBN16 FLEX Ex 16 NAMUR Input Module 1797-OB4D 1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module 1797-IE8 1797-IE8 FLEX Ex 8 Input Analog Module 7 1797-IE8NF 1797-OE8 1797-IE8NF FLEX Ex 8 Input Analog Module with Noise Filter 1797-OE8 FLEX Ex 8 Output Analog Module 1797-IRT8 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module 1797-IJ2 1797-IJ2 FLEX Ex Frequency Input Module 11 5 6 8 9 10 1797-PS2E 1797-PS2E FLEX Ex Power Supply 12 1797-ACNR15 1797-RPA, -RPFM 1797-BIC, -CEC 1797-ACNR15/B ControlNet Ex Redundant Media Adapter 1797-RPA ControlNet Ex Modular Repeater Adapter and 1797-RPFM Fiber Repeater Module, Medium Distance 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector 13 14 15

Preface 8 UL, cul Certification Information For Information On Refer to this Chapter UL, cul Certification Information General UL, cul Certification Information 16 ControlNet Ex System 17 1797-TB3 1797-TB3 FLEX Ex Terminal Base Unit 18 1797-TB3S 1797-TB3S FLEX Ex Terminal Base Unit 19 1797-IBN16 1797-IBN16 FLEX Ex 16 NAMUR Input Module 20 21 1797-OB4D 1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module 1797-IE8 1797-IE8 FLEX Ex 8 Input Analog Module 22 1797-IE8NF 1797-OE8 1797-IE8NF FLEX Ex 8 Input Analog Module with Noise Filter 1797-OE8 FLEX Ex 8 Output Analog Module 23 24 25 1797-IRT8 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module 1797-IJ2 1797-IJ2 FLEX Ex Frequency Input Module 26 1797-PS2N 1797-PS2N/A FLEX Ex Power Supply 27 1797-ACNR15 1797-RPA, -RPFM 1797-BIC, -CEC 1797-ACNR15/B ControlNet Ex Redundant Media Adapter 1797-RPA ControlNet Ex Modular Repeater Adapter and 1797-RPFM Fiber Repeater Module, Medium Distance 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector 28 29 30

Preface 9 FM Certification Information For Information On Refer to this Chapter FM Certification Information General FM Certification Information 31 ControlNet Ex System 32 1797-TB3 1797-TB3 FLEX Ex Terminal Base Unit 33 1797-TB3S 1797-TB3S FLEX Ex Terminal Base Unit 34 1797-IBN16 1797-IBN16 FLEX Ex 16 NAMUR Input Module 35 36 1797-OB4D 1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module 1797-IE8 1797-IE8 FLEX Ex 8 Input Analog Module 37 1797-IE8NF 1797-OE8 1797-IE8NF FLEX Ex 8 Input Analog Module with Noise Filter 1797-OE8 FLEX Ex 8 Output Analog Module 38 39 40 1797-IRT8 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module 1797-IJ2 1797-IJ2 FLEX Ex Frequency Input Module 41 1797-PS2N 1797-PS2N/A FLEX Ex Power Supply 42 1797-ACNR15 1797-RPA, -RPFM 1797-BIC, -CEC 1797-ACNR15/B ControlNet Ex Redundant Media Adapter 1797-RPA ControlNet Ex Modular Repeater Adapter and 1797-RPFM Fiber Repeater Module, Medium Distance 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector 43 44 45

Preface 10 Notes:

Table of Contents CENELEC Information General CENELEC Certification Information Chapter 1 General Installation.............................. 1-1 Installation in Zone 1............................ 1-2 Electrostatic Charge.............................. 1-2 European Community Directive Compliance........... 1-2 Ex Directive................................. 1-2 Repair........................................ 1-3 Chapter 2 ControlNet Ex System ControlNet Ex System Diagram..................... 2-2 Describing the ControlNet Ex System Diagram.......... 2-3 Certified Equivalent ControlNet Ex System Diagram Items............................... 2-4 European Community Directive Compliance........... 2-4 Ex Directive................................. 2-5 Installation in Zone 1............................ 2-5 Electrostatic Charge.............................. 2-6 Repair........................................ 2-6 General Specifications............................ 2-7 1797-TB3 FLEX Ex Terminal Base Unit 1797-TB3S FLEX Ex Terminal Base Unit Chapter 3 General Information............................. 3-1 Module Installation.............................. 3-1 Installation in Zone 1............................ 3-1 Inputs........................................ 3-2 Description.................................... 3-2 Intrinsically Safe Specifications...................... 3-3 Chapter 4 General Information............................. 4-1 Module Installation.............................. 4-1 Installation in Zone 1............................ 4-1 Inputs........................................ 4-2 Description.................................... 4-2 Intrinsically Safel Specifications..................... 4-3 i

Table of Contents ii 1797-IBN16 FLEX Ex 16 NAMUR Input Module 1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module 1797-IE8 FLEX Ex 8 Input Analog Module 1797-IE8NF FLEX Ex 8 Input Analog Module with Noise Filter 1797-OE8 FLEX Ex 8 Output Analog Module Chapter 5 General Information............................. 5-1 Module Installation.............................. 5-1 Inputs........................................ 5-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 5-2 Instrinsically Safe Specifications..................... 5-2 CE/CENELEC I/O Entity Parameters (Each Channel)...... 5-3 Chapter 6 General Information............................. 6-1 Module Installation.............................. 6-1 Outputs...................................... 6-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 6-1 Intrinsically Safe Specifications...................... 6-2 CE/CENELEC I/O Entity Parameters.................. 6-2 Chapter 7 General Information............................. 7-1 Module Installation.............................. 7-1 Inputs........................................ 7-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 7-2 Intrinsically Safe Specifications...................... 7-2 CE/CENELEC I/O Entity Parameters.................. 7-3 Chapter 8 General Information............................. 8-1 Module Installation.............................. 8-1 Inputs........................................ 8-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 8-2 Intrinsically Safe Specifications...................... 8-2 CE/CENELEC I/O Entity Parameters.................. 8-3 Chapter 9 General Information............................. 9-1 Module Installation.............................. 9-1 Outputs...................................... 9-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 9-1 General Specifications............................ 9-2 CE, CENELEC I/O Entity Parameters.................. 9-2

Table of Contents iii 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module 1797-IJ2 FLEX Ex Frequency Input Module Chapter 10 General Information............................. 10-1 Module Installation.............................. 10-1 Inputs........................................ 10-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 10-2 Intrinsically Safe Specifications...................... 10-2 CE/CENELEC I/O Entity Parameters.................. 10-3 Chapter 11 General Information............................. 11-1 Module Installation.............................. 11-1 Inputs........................................ 11-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 11-2 Intrinsically Safe Specifications...................... 11-2 CE/CENELEC Input I/O Entity Parameters............. 11-3 Channel 0 Frequency Input..................... 11-3 Channel 1 Frequency Input..................... 11-4 Channel 0 Gate Input.......................... 11-4 Channel 1 Gate Input.......................... 11-5 Relay Outputs.................................. 11-6 Chapter 12 1797-PS2E FLEX Ex Power Supply Installation in Zone 1............................ 12-1 Outputs...................................... 12-1 Typical Wiring Configurations...................... 12-2 Intrinsically Safe Specifications...................... 12-2 1797-ACNR15/B ControlNet Ex Redundant Media Adapter 1797-RPA ControlNet Ex Modular Repeater Adapter and 1797-RPFM Fiber Repeater Module, Medium Distance 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector Chapter 13 Module Installation.............................. 13-1 Inputs/Outputs................................. 13-1 Intrinsically Safe Specifications...................... 13-2 Chapter 14 Module Installation.............................. 14-1 Inputs/Outputs................................. 14-1 Intrinsically Safe Specifications...................... 14-3 Chapter 15 General Installation.............................. 15-1 Inputs/Outputs................................. 15-2 Intrinsically Safe Specifications...................... 15-3

Table of Contents iv UL, C-UL Information General UL, cul Certification Information Chapter 16 Module Installation.............................. 16-1 Installation in Division 1/Zone 1.................... 16-2 Electrostatic Charge.............................. 16-2 UL, C-UL I/O Entity Parameters..................... 16-2 Repair........................................ 16-3 Chapter 17 ControlNet Ex System............................................ 17-1 ControlNet Ex System Diagram..................... 17-2 Describing the ControlNet Ex System Diagram.......... 17-3 Certified Equivalent ControlNet Ex System Diagram Items............................... 17-4 Installation in Division 1/Zone 1.................... 17-5 Electrostatic Charge.............................. 17-6 Repair........................................ 17-6 1797-TB3 FLEX Ex Terminal Base Unit 1797-TB3S FLEX Ex Terminal Base Unit 1797-IBN16 FLEX Ex 16 NAMUR Input Module Chapter 18 General Information............................. 18-1 Module Installation.............................. 18-1 Installation in Division 1/Zone 1.................... 18-1 Inputs........................................ 18-2 Description.................................... 18-2 Intrinsically Safe Specifications...................... 18-3 Chapter 19 General Information............................. 19-1 Module Installation.............................. 19-1 Installation in Division 1/Zone 1.................... 19-1 Inputs........................................ 19-2 Description.................................... 19-2 Intrinsically Safe Specifications...................... 19-3 Chapter 20 General Information............................. 20-1 Module Installation.............................. 20-1 Inputs........................................ 20-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 20-2 Intrinsically Safe Specifications...................... 20-2 UL, cul I/O Entity Parameters...................... 20-3 Table 1.................................... 20-3 Table 2.................................... 20-4

Table of Contents v 1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module 1797-IE8 FLEX Ex 8 Input Analog Module 1797-IE8NF FLEX Ex 8 Input Analog Module with Noise Filter 1797-OE8 FLEX Ex 8 Output Analog Module Chapter 21 General Information............................. 21-1 Module Installation.............................. 21-1 Outputs...................................... 21-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 21-1 Intrinsically Safe Specifications...................... 21-2 UL, cul I/O Entity Parameters...................... 21-2 Table 1.................................... 21-2 Table 2.................................... 21-3 Chapter 22 General Information............................. 22-1 Module Installation.............................. 22-1 Inputs........................................ 22-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 22-2 Intrinsically Safe Specifications...................... 22-2 UL, cul I/O Entity Parameters...................... 22-3 Table 1.................................... 22-3 Table 2.................................... 22-4 Chapter 23 General Information............................. 23-1 Module Installation.............................. 23-1 Inputs........................................ 23-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 23-2 Intrinsically Safe Specifications...................... 23-2 UL, cul I/O Entity Parameters...................... 23-3 Table 1.................................... 23-3 Table 2.................................... 23-4 Chapter 24 General Information............................. 24-1 Module Installation.............................. 24-1 Outputs...................................... 24-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 24-1 Intrinsically Safe Specifications...................... 24-2 UL, cul I/O Entity Parameters...................... 24-2 Table 1.................................... 24-2 Table 2.................................... 24-3

Table of Contents vi 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module 1797-IJ2 FLEX Ex Frequency Input Module 1797-PS2N/A FLEX Ex Power Supply 1797-ACNR15/B ControlNet Ex Redundant Media Adapter 1797-RPA ControlNet Ex Modular Repeater Adapter and 1797-RPFM Fiber Repeater Module, Medium Distance Chapter 25 General Information............................. 25-1 Module Installation.............................. 25-1 Inputs........................................ 25-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 25-2 Intrinsically Safe Specifications...................... 25-2 UL, cul I/O Entity Parameters...................... 25-3 Table 1.................................... 25-3 Table 2.................................... 25-5 Chapter 26 General Information............................. 26-1 Module Installation.............................. 26-1 Inputs........................................ 26-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 26-2 Intrinsically Safe Specifications...................... 26-2 UL, cul I/O Entity Parameters...................... 26-2 Table 1.................................... 26-3 Table 2.................................... 26-4 Chapter 27 Installation in Division 1/Zone 1.................... 27-1 Outputs...................................... 27-1 Typical Wiring Configurations...................... 27-1 Intrinsically Safe Specifications...................... 27-2 UL, cul I/O Entity Parameters...................... 27-2 Table 1.................................... 27-2 Chapter 28 Module Installation.............................. 28-1 Inputs/Outputs................................. 28-1 General Specifications............................ 28-1 UL, cul Entity Parameters and Requirements........... 28-2 UL, cul I/O Entity Parameters and Requirements..... 28-2 Chapter 29 Module Installation.............................. 29-1 Inputs/Outputs................................. 29-1 Intrinsically Safe Specifications...................... 29-2 UL, cul Entity Parameters and Requirements........... 29-2

Table of Contents vii 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector Chapter 30 General Installation.............................. 30-1 Inputs/Outputs................................. 30-2 Intrinsically Safe Specifications...................... 30-3 FM Information General FM Certification Information Chapter 31 Module Installation.............................. 31-1 Installation in Division 1/ Zone 1.................... 31-2 Electrostatic Charge.............................. 31-2 FM I/O Entity Parameters......................... 31-3 Repair........................................ 31-3 Chapter 32 ControlNet Ex System............................................ 32-1 ControlNet Ex System Diagram..................... 32-2 Describing the ControlNet Ex System Diagram.......... 32-3 Certified Equivalent ControlNet Ex System Diagram Items............................... 32-4 1797-TB3 FLEX Ex Terminal Base Unit 1797-TB3S FLEX Ex Terminal Base Unit 1797-IBN16 FLEX Ex 16 NAMUR Input Module Chapter 33 Module Installation.............................. 33-1 Installation in Division 1/Zone 1.................... 33-1 Inputs........................................ 33-2 Description.................................... 33-2 Intrinsically Safe Specifications...................... 33-3 Chapter 34 Module Installation.............................. 34-1 Installation in Division 1/Zone 1.................... 34-1 Inputs........................................ 34-2 Description.................................... 34-2 Intrinsically Safe Specifications...................... 34-3 Chapter 35 Inputs........................................ 35-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 35-1 Intrinsically Safe Specifications...................... 35-2 FM I/O Entity Parameters (Each Channel)............. 35-2 Table 1.................................... 35-2 Table 2.................................... 35-3

Table of Contents viii 1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module 1797-IE8 FLEX Ex 8 Input Analog Module 1797-IE8NF FLEX Ex 8 Input Analog Module with Noise Filter 1797-OE8 FLEX Ex 8 Output Analog Module 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module Chapter 36 Outputs...................................... 36-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 36-1 Intrinsically Safe Specifications...................... 36-2 FM I/O Entity Parameters......................... 36-2 Table 1.................................... 36-2 Table 2.................................... 36-3 Chapter 37 Inputs........................................ 37-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 37-1 Intrinsically Safe Specifications...................... 37-2 FM I/O Entity Parameters......................... 37-2 Table 1.................................... 37-2 Table 2.................................... 37-3 Chapter 38 Inputs........................................ 38-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 38-1 Intrinsically Safe Specifications...................... 38-2 FM I/O Entity Parameters......................... 38-2 Table 1.................................... 38-2 Table 2.................................... 38-3 Chapter 39 Outputs...................................... 39-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 39-1 Intrinsically Safe Specifications...................... 39-2 FM I/O Entity Parameters......................... 39-2 Table 1.................................... 39-2 Table 2.................................... 39-3 Chapter 40 Inputs........................................ 40-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 40-1 Intrinsically Safe Specifications...................... 40-2 FM I/O Entity Parameters......................... 40-2 Table 1.................................... 40-2 Table 2.................................... 40-4

Table of Contents ix 1797-IJ2 FLEX Ex Frequency Input Module 1797-PS2N/A FLEX Ex Power Supply 1797-ACNR15/B ControlNet Ex Redundant Media Adapter 1797-RPA ControlNet Ex Modular Repeater Adapter and 1797-RPFM Fiber Repeater Module, Medium Distance 1797-BIC Bus Isolator Module and 1797-CEC Flexbus Connector Chapter 41 Inputs........................................ 41-1 Wiring to a 1797-TB3 or -TB3S Terminal Base Unit....... 41-1 Intrinsically Safe Specifications...................... 41-2 FM Input I/O Entity Parameters..................... 41-2 Table 1.................................... 41-2 Table 2.................................... 41-4 Chapter 42 Installation in Division 1/Zone 1.................... 42-1 Outputs...................................... 42-1 Typical Wiring Configurations...................... 42-1 Intrinsically Safe Specifications...................... 42-2 FM I/O Entity Parameters......................... 42-2 Table 1.................................... 42-2 Chapter 43 Module Installation.............................. 43-1 Inputs/Outputs................................. 43-1 Intrinsically Safe Specifications...................... 43-1 FM Entity Parameters and Requirements............... 43-2 FM I/O Entity Parameters and Requirements......... 43-2 Chapter 44 Module Installation.............................. 44-1 Inputs/Outputs................................. 44-1 Intrinsically Safe Specifications...................... 44-2 FM Entity Parameters and Requirements............... 44-2 Chapter 45 General Installation.............................. 45-1 Inputs/Outputs................................. 45-2 Intrinsically Safe Specifications...................... 45-3

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Chapter 1 General CENELEC Certification Information (1) keyswitch (8) flexbus cover (2) terminal base unit Label here or under here 40231 General Installation FLEX Ex I/O modules must be used with a 1797-TB3 or -TB3S intrinsically safe terminal base unit. You will need to rotate the keyswitch (1) to the correct position depending on the module. Refer to the module s installation instructions for more information. Do not change the position of the keyswitch after wiring the terminal base unit. Make certain that you only connect terminal base units to other intrinsically safe system modules, adapters or power supplies to maintain the integrity of the intrinsically-safe backplane. 41307 Remove cap plug and attach another intrinsically safe terminal base unit to the right of the terminal base unit (2) if required. Do not remove the flexbus cover (8) on the right-most terminal base unit. CENELEC Information 1

1-2 General CENELEC Certification Information Installation in Zone 1 Modules, adapters, and terminal base units must not be exposed to the environment. Provide a suitable enclosure. The modules, adapters, and terminal base units have a protection factor of IP20. ATTENTION! Modules, adapters, and terminal base units cannot be used in an intrinsically safe environment after they have been exposed to non-intrinsically safe signals. Electrostatic Charge Protect the system against electrostatic charge. Post a sign near each module: Attention! Avoid electrostatic charge. For your convenience, a sign which can be cut out and posted is included in this chapter. European Community Directive Compliance If this product has the CE mark it is approved for installation within the European Community or EEA regions. It has been designed and tested to meet the following directives. Ex Directive All system components, expect the power supply, are tested to meet the Council Directive 94/9/EC (ATEX 100a, 95) Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres by applying the following standards, as appropriate: EN50014:1997 + A1-A2, Electrical Apparatus for Potentially Explosive Atmospheres EN50018:1995, Electrical Apparatus for Potentially Explosive Atmospheres - Flameproof Enclosure d EN50019:1996, Electrical Apparatus for Potentially Explosive Atmospheres - Increased Safety e EN50020:1994, Electrical Apparatus for Potentially Explosive Atmospheres - Intrinsic Safety i EN50021: 1999, Electrical Apparatus for Potentially Explosive Atmospheres - Type of Protection n EN50039:1980, Electrical Apparatus for Potentially Explosive Atmospheres - Intrinsically Safe Electrical Systems i pren50284:1999, Special requirements for construction, test and marking of electrical apparatus of equipment group II, category 1G CENELEC Information

General CENELEC Certification Information 1-3 The power supply is tested to meet the Council Directive 76/117/EC Electrical Apparatus for Explosive Atmospheres by applying the following standards: EN50014:1977 + A1-A5, Electrical Apparatus for Potentially Explosive Atmospheres EN50018:1977 + A1-A3, Electrical Apparatus for Potentially Explosive Atmospheres - Flameproof Enclosure d EN50019:1977 + A1-A5, Electrical Apparatus for Potentially Explosive Atmospheres - Increased Safety e EN50020:1977 + A1-A5, Electrical Apparatus for Potentially Explosive Atmospheres - Intrinsic Safety i Repair System components are not field-repairable. Any attempt to open a system component will void the warranty and the IS certification. If repair is necessary, return the system component to the manufacturer. Attention: Avoid electrostatic charge. ATTENTION! When installing, commissioning, operating, and maintaining devices with intrinsically safe circuits, the certificate of conformity of the devices, as well as the applicable national and local construction, installation, and operating regulations must be heeded (in Germany DIN EN 50020, DIN VDE 0165). ATTENTION! Repairs to devices having intrinsically safe circuitry may only be carried out by qualified personnel in accordance with the valid regulations (Elex V). CENELEC Information

1-4 General CENELEC Certification Information Notes: CENELEC Information

Chapter 2 ControlNet Ex System Adapter Bus Connectors Terminal Base Keyswitch Flexbus Connector Ex I/O Module 1797-ACNR15 Ex PWR PWR Terminal Strips Field Power Connection Terminals 20125-M CENELEC Information 1

2-2 ControlNet Ex System ControlNet Ex System Diagram 30670-M Safe Area Hazardous Area Zone 0 Hazardous Area Zone 1 The ControlNet Ex System is an intrinsically safe system according to EN 50039. 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. 1797-6.5.6). Node 2 1797-RPA/* or RSD-CFA-Ex.CN 1797-RPFM/* or RSD-FC-Ex2.CN 3km 1797-RPFM/* or RSD-FC-Ex2.CN 3km 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. Uo=5.4V, Io=201mA, F -3 >500kHz Power Supply Ui=9.5V, Ii=1A, Ci<120nF, Li=negligible Ch0 fiber Ch1 fiber Ch0 fiber Ch1 fiber Node 3 1797-ACNR15/* or RSD-GW-Ex2.CN 1 Flexbus Uo=5.4V, Io=400mA, Po=2.16W, Co=65µF, Lo=10µH Node 4... 48 1797-ACNR15/* or RSD-GW-Ex2.CN Flexbus Uo=5.4V, Io=400mA, Po=2.16W, Co=65µF, Lo=10µH ChA Uo=5.4V, Io=160mA, F -3 >500kHz ChB Uo=5.4V, Io=160mA, F -3 >500kHz Power Supply Ui=9.5V, Ii=1A, Ci<120nF, Li=negligible ChA Uo=5.4V, Io=160mA, F -3 >500kHz ChB Uo=5.4V, Io=160mA, F -3 >500kHz Power Supply Ui=9.5V, Ii=1A, Ci<120nF, Li=negligible CNet Ex trk trm 75 Ohm 1W Ci negl. Li negl. ControlNet Ex tap Ci < 60pF Li < 560nH Li < 1100uH Li < 1100uH ControlNet Ex tap coax trunk cable Cable type 1189A, 3092A, or 3092A Blue from manufacturer Belden Wire or type RG6-CNet* ControlNet Ex tap coax trunk cable ControlNet Ex tap CNet Ex trk trm 75 Ohm 1W Ci negl. Li negl. The Coax Trunk Cable is permitted to have a maximum 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. Node 1 CNet Ex tap trm Ci < 68pF Li negl. 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 <5.94nF per 100m Cable Resistance >9.08 Ohm per 100m Cable Attenuation (-20 to +70 o C) 0.2MHz > 0.93dB/100m 5MHz > 1.39dB/100m 0.5MHz > 0.95dB/100m 10MHz > 1.86dB/100m 1MHz > 1.07dB/100m 20MHz > 2.73dB/100m 2MHz > 1.16dB/100m 50MHz > 4.33dB/100m................ CENELEC Information

ControlNet Ex System 2-3 Describing the ControlNet Ex System Diagram A maximum of 48 ControlNet Ex TM 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) 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-ACNR15 1797-ACNR15 Redundant Media ControlNet Ex Adapter CNet Ex Tap Trm ControlNet Ex Tap CNet Ex Trk Trm Coax Trunk Cable 1797-TCAP 1797-TPx 1797-XT 1797-RG6 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 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 ControlNet Ex Trunk Terminator 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 2 1797-TPx is 3280ft (1000m) - each 1797-TPx reduces the (functional) coax cable length by 53.4ft (16.3m) Different standard cable couplers, 90 o, 180 o, etc. CENELEC Information

2-4 ControlNet Ex System 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 Allen-Bradley RSD-CFA-Ex.CN Pepperl+Fuchs 1797-RPFM 1797-RPFM Allen-Bradley RSD-FC-Ex2.CN Pepperl+Fuchs 1797-ACNR15 1797-ACNR15 Allen-Bradley RSD-GW-Ex2.CN Pepperl+Fuchs Coax Trunk Cable 1 1797-RG6 Allen-Bradley 3092A 2 Belden Wire & Cable Co. 3092A with blue jacket Belden Wire & Cable Co. ControlNet Ex Tap 1797-TPx Allen-Bradley RS-TPx-Ex Pepperl+Fuchs CNet Ex Trk Trm 1797-XT Allen-Bradley RS-XT-Ex Pepperl+Fuchs CNet Ex Tap Trm 1797-TCAP Allen-Bradley RS-TCAP-Ex Pepperl+Fuchs 1 In addition to these cable types, the following specification can be followed to allow additional types: Cable Impedance = 75Ω ± 3Ω Cable Capacitance = <5.94nF per 100m Cable Resistance = >9.08Ω per 100m Cable Attenuation 0.2MHz > 0.93dB/100m 5MHz > 1.39dB/100m (-20 to +70 o C) 0.5MHz > 0.95dB/100m 10MHz > 1.86dB/100m 1MHz > 1.07dB/100m 20MHz > 2.73dB/100m 2MHz > 1.16dB/100m 50MHz > 4.33dB/100m 2 Belden Wire & Cable 1189A may be used, but with functional loss of communication distance and/or nodes. European Community Directive Compliance If this product has the CE mark it is approved for installation within the European Community or EEA regions. It has been designed and tested to meet the following directives. CENELEC Information

ControlNet Ex System 2-5 Ex Directive This product is tested to meet the Council Directive 94/9/EC (ATEX 100a) Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres by applying the following standards: EN50014:1992, Electrical Apparatus for Potentially Explosive Atmospheres EN50020:1994, Electrical Apparatus for Potentially Explosive Atmospheres - Intrinsic Safety i EN50039:1980, Electrical Apparatus for Potentially Explosive Atmospheres - Intrinsically Safe Electrical Systems i pren50284:1997, Special requirements for construction, test and marking of electrical apparatus of equipment group II, category 1G Installation in Zone 1 Modules must not be exposed to the environment. Provide a suitable metal enclosure. A label with this system marking must be attached near the main components of the system. If the system is installed in a cabinet, this label must be fixed inside the cabinet. Allen-Bradley 1 Allen-Bradley Dr. Mayfield Hts., OH USA ControlNet Ex System DMT 99 ATEX E 065 X II (1) 2G SYST EEx ia/ib IIB/C T4 0102-20 0 C <= Ambient Temperature <= +70 0 C Attention! Avoid electrostatic charging! ATTENTION! Modules cannot be used in an intrinsically safe environment after they have been exposed to non-intrinsically safe signals. CENELEC Information

2-6 ControlNet Ex System Electrostatic Charge Repair Protect the system against electrostatic charge. Post a sign near each module: Attention! Avoid electrostatic charge. For your convenience, a sign which can be cut out and posted is included in this chapter. Modules are not field-repairable. Any attempt to open a module will void the warranty and the IS certification. If repair is necessary, return the module to the manufacturer. Attention: Avoid electrostatic charge. ATTENTION! When installing, commissioning, operating, and maintaining devices with intrinsically safe circuits, the certificate of conformity of the devices, as well as the applicable national and local construction, installation, and operating regulations must be heeded (in Germany DIN EN 50020, DIN VDE 0165). ATTENTION! Repairs to devices having intrinsically safe circuitry may only be carried out by qualified personnel in accordance with the valid regulations (Elex V). CENELEC Information

ControlNet Ex System 2-7 General Specifications For a full list of specifications, refer to ControlNet Ex Redundant Media Adapter Installation Instructions, publication 1797-5.14. Operational Temperature -20 to 70 o C (-4 to 158 o F) Agency Certification II (1) 2G SYST EEx ia/ib IIB/IIC T4 Certificates DMT 99 ATEX E 065 X CENELEC Information

2-8 ControlNet Ex System Notes: CENELEC Information

Chapter 3 1797-TB3 FLEX Ex Terminal Base Unit (1) keyswitch Label here (8) flexbus cover 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 42332 General Information FLEX Ex I/O modules must be used with a 1797-TB3 or -TB3S intrinsically safe terminal base unit. Module Installation You will need to rotate the keyswitch (1) to the correct position depending on the module. Refer to the module s installation instructions for more information. Do not change the position of the keyswitch after wiring the terminal base unit. Make certain that you only connect terminal base units to other intrinsically safe system modules or adapters to maintain the integrity of the intrinsically-safe backplane. 41307 Installation in Zone 1 Do not remove the flexbus cover (8) on the right-most terminal base unit. CENELEC Information 1

3-2 1797-TB3 FLEX Ex Terminal Base Unit Inputs Do not apply any non-instrinsically safe signals to the terminal base. When using as an intrinsically safe electrical apparatus according to EN50020, the European directives and regulations must be followed. The terminals in the terminal base unit may be electrically connected to each other by the insertion of FLEX Ex I/O modules. See the module installation instructions to determine this. IMPORTANT When interconnecting several lines, you must consider the total accumulated power and check for intrinsic safety requirements. Description The 1797-TB3 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. 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.. Wiring Connections for Terminal Base 1797-TB3 A B 16 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 C 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 +V -V +V -V No connections allowed to terminals 36 and 49 41252 ATTENTION! Make certain that you power the terminal base unit with an intrinsically safe power supply. Do not exceed the values listed in the specifications for the terminal base unit. Do not use the unused terminals on the terminal base unit. Using these terminals as supporting terminals can result in damage to modules and/or unintended operation of your system. CENELEC Information