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FLEX Ex Bus Isolator and Flexbus Connector
Catalog Numbers 1797-BIC, 1797-CEC
Topic
Important User Information
About the Isolator and Flexbus Connector
Product Features
Intermixed Systems
Module Installation
Installation in Zone 2
Installation in Zone 22
Electrostatic Charge
Removal and Insertion Under Power
European Communities (EC) Directive Compliance
Inputs and Outputs
Wire the Isolator Module
Indicators
About the Mounting Kit
Specifications
Installation Instructions
Publication
1797-IN513G-EN-P - August 2017
Page
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20
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Related Manuals for Rockwell Automation 1797-BIC
Summary of Contents for Rockwell Automation 1797-BIC
- Page 1 Installation Instructions FLEX Ex Bus Isolator and Flexbus Connector Catalog Numbers 1797-BIC, 1797-CEC Topic Page Important User Information About the Isolator and Flexbus Connector Product Features Intermixed Systems Module Installation Installation in Zone 2 Installation in Zone 22 Electrostatic Charge...
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Page 2: Important User Information
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. -
Page 3: About The Isolator And Flexbus Connector
Allen-Bradley 1797 - BIC QUALIT Y FLEXBUS FLEXBUS CONNECTOR ISOLATOR +V -V +V -V 1797-CEC 1797-BIC 42641 Component Identification Power indicators Label Module locking tab Removable power connector FLEX Ex backplane connector FLEX Ex backplane connector cover Master backplane connector... -
Page 4: Product Features
Intermixed Systems The bus isolator modules, 1797-BIC and 1797-CEC, let you configure FLEX Ex modules and FLEX I/O modules on the DIN rail when attached to the same adapter and grouped together on appropriate sides of the bus isolator module. -
Page 5: Module Installation
Make certain that you only connect the FLEX Ex backplane connector to other intrinsically-safe system modules to maintain the integrity of the intrinsically-safe backplane. For proper operation, cycle power to the 1797-BIC module at the ATTENTION same time power is cycled to the associated adapter. - Page 6 6 FLEX Ex Bus Isolator and Flexbus Connector 1797-CEC Module Installation The 1797-CEC module mounts on a DIN rail. It connects to an adapter or another FLEX I/O module. If using this module with FLEX I/O modules, do not mount between FLEX I/O modules. Mount the 1797-CEC module to the right of FLEX I/O modules.
- Page 7 FLEX Ex Bus Isolator and Flexbus Connector 7 If the module does not lock in place, use a screwdriver or similar device to move the locking tab down, press the module flush with the DIN rail and release the locking tab to lock the module in place. 5.
- Page 8 8 FLEX Ex Bus Isolator and Flexbus Connector Install the 1797-BIC Module The 1797-BIC module mounts on a DIN rail. It connects to a 1797-CEC module. 1. Remove the cover plug (if used) in the male connector of the unit to which you are connecting this module.
- Page 9 IS OL AT OR PW R 42647 6. Install DIN rail locks (supplied with the 1797-BIC module) to meet shock and vibration specifications as listed on page 20. 7. To remove the 1797-BIC module, remove the DIN-rail locks and then slide the module away from its left neighbor, and release the locking lever to remove the module from the DIN rail.
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Page 10: Installation In Zone
10 FLEX Ex Bus Isolator and Flexbus Connector Installation in Zone 2 The 1797-CEC and 1797-BIC modules must not be exposed to the environment. These modules have a protection factor of IP20. Provide a suitable metal enclosure. The 1797-BIC module cannot be used as an associated apparatus... -
Page 11: Electrostatic Charge
For your convenience, a sign that can be cut out is included in this installation instruction. Removal and Insertion Under Power Do not remove the 1797-CEC or 1797-BIC modules under power. WARNING Removing these modules under power will break the electrical backplane (flexbus) connections. -
Page 12: European Communities (Ec) Directive Compliance
Generic Standards - Immunity for Industrial Environments • EN 61326-1:2013 (Industrial), Electrical Equipment For Measurement, Control, and Laboratory Use - Industrial EMC Requirements European Hazardous Location Approval (For 1797-BIC) The following applies to products marked II 2G and II 2D •... - Page 13 • The type of protection is “Ex nA IIC T4” according to EN 60079-15. IEC Hazardous Location Approval (For 1797-BIC only) The following applies to products with the IECEx certification: • Are intended for use in areas in which explosive atmospheres caused by gases, vapors, mists, or air are likely to occur only infrequently and for short periods.
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Page 14: Usl Compliance
14 FLEX Ex Bus Isolator and Flexbus Connector • FM C1. No.3615:1989, Explosionproof Electrical Equipment General Requirements • FM C1. No.3810:1989, 1995, Electrical and Electronic Test, Measuring and Process Control Equipment • ANSI/NEMA 250, 1991, Enclosures for Electrical Equipment USL Compliance If this product has the UL mark, it has been designed, evaluated, tested, and certified to meet the following standards: •... -
Page 15: Inputs And Outputs
Do not apply any noninstrinsically safe signals to the FLEX Ex backplane connector. When using as an intrinsically safe electrical apparatus according to EN 60079-11, the European directives and regulations must be followed. 1797-CEC 1797-BIC FLEX Ex IS Flexbus Flexbus Flexbus... -
Page 16: Wire The Isolator Module
16 FLEX Ex Bus Isolator and Flexbus Connector Wire the Isolator Module When connecting wiring, torque terminal screws to 0.8…1.0 Nm ATTENTION (7…9 lb-in). Allen-Bradley 1797 - BIC QUALIT Y FLEXBUS ISOLATOR POWER +V -V +V -V 42648 Make certain that you power this device with normal 24V dc. Do not WARNING use an intrinsically-safe power supply, such as the 1797-PS2E or 1797-PS2N, to power this module. -
Page 17: About The Mounting Kit
1797-BIC module. The FLEX Ex backplane connector cover must remain in place until a ATTENTION FLEX Ex terminal base or cable is connected to the 1797-BIC module. Indicators The 1797-BIC isolator module provides a power indicator to show power has been applied to the module. - Page 18 The DIN rail or mounting bracket must be appropriately connected to ATTENTION the dedicated intrinsic safety ground. Repair The 1797-BIC isolator module is not field-repairable. Any attempt to open the module will void its warranty and the IS certification. If repair is necessary, return the module to the manufacturer. Publication...
- Page 19 FLEX Ex Bus Isolator and Flexbus Connector 19 Dimensions for Mounting the 1797-CEC Flexbus Connector (2.72) (3.15) mm (in.) (2.17) 42650 The DIN rail or mounting bracket must be appropriately connected to ATTENTION the dedicated intrinsic safety ground. Repair The 1797-CEC Flexbus Connector module is not field-repairable. Any attempt to open the module will void its warranty.
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Page 20: Specifications
20 FLEX Ex Bus Isolator and Flexbus Connector Specifications Table 1 1797-BIC Flex Ex Bus Isolator Attribute Value I/O module capacity 8 FLEX Ex modules Indicators Power - green when power is applied Isolation path Flexbus to Flexbus Galvanic to DIN EN 60079-11... - Page 21 [Ex ib] IIC IEC temp code A total of eight I/O modules can be attached to a 1794 FLEX I/O adapter. The 1797-CEC and 1797-BIC modules are not included in this number. In intermixed systems, the number of 1797 FLEX Ex I/O modules (attached onto the 1797-BIC module) plus the number of 1794 FLEX I/O modules (connected between the adapter and the 1797-CEC module) cannot exceed eight.
- Page 22 22 FLEX Ex Bus Isolator and Flexbus Connector Table 2 Flexbus Connector - 1797-CEC Attribute Value Indicators Not applicable Weight Approx. 100 g Environmental conditions Operational temperature -20…70 C (-4…158 Storage temperature -40…85 C (-40…185 Relative humidity 5…95% noncondensing Shock operating Tested 30 g peak acceleration, 11 (±1) ms pulse width nonoperating...
- Page 23 FLEX Ex Bus Isolator and Flexbus Connector 23 CENELEC Information The isolator type 1797-BIC/* module is an associated apparatus according to EN 60079-11. If the isolator is connected to intrinsically-safe circuits the applicable national local construction, installation and operating regulations must be heeded (in Germany DIN EN 60079-11, DIN VDE 0165).
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Page 24: Power Supply
Refer to table 2 of the appropriate I/O Modules sections in this document (1797-RM001). Application The isolator type 1797-BIC/* module functions as a galvanic isolation barrier for signals between a nonintrinsic backplane bus and an intrinsic safe backplane bus. The isolator must be installed in a safe or Zone 2 area. - Page 25 FLEX Ex Bus Isolator and Flexbus Connector 25 WARNING Avoid electrostatic charging. ADVERTÊNCIA! PREVENIR CONTRA O ACÚMULO DE CARGA ELETROSTÁTICA. Publication 1797-IN513G-EN-P - August 2017...
- Page 26 26 FLEX Ex Bus Isolator and Flexbus Connector Notes: Publication 1797-IN513G-EN-P - August 2017...
- Page 27 FLEX Ex Bus Isolator and Flexbus Connector 27 Notes: Publication 1797-IN513G-EN-P - August 2017...
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Page 28: Rockwell Automation Support
Rockwell Automation Support Rockwell Automation provides technical information on the Web to assist you in using its products. At http://support.rockwellautomation.com, you can find technical manuals, a knowledge base of FAQs, technical and application notes, sample code and links to software service packs, and a MySupport feature that you can customize to make the best use of these tools.