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FLEX Ex Bus Isolator and Flexbus
Connector
(Cat. No. 1797-BIC, -CEC)
- A
B
Allen-Bradley
QUALITY
8
2
3
1797-CEC
Use the FLEX Ex
modules to intrinsically safe FLEX Ex modules in the same I/O group.
1
Indicators
2
Label
3
Module locking tab
4
Removable power connector
5
FLEX Ex backplane connector
6
FLEX Ex backplane connector cover
7
Master backplane connector
8
FLEX I/O backplane connector
FLEX Ex is a trademark of Rockwell
7
1797 - CEC
FLEXBUS
CONNECTOR
TM
bus isolator to interconnect standard FLEX I/O
Component Identification
Automation1
Installation Instructions
B -
A
Allen-Bradley
QUALIT Y
1
2
3
4
+V -V +V -V
4
1797-BIC
Publication 1797-5.13 - August 2001
5
1797 - BIC
6
FLEXBUS
ISOLATOR
PWR
2
1
3
42641
TM
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Related Manuals for Allen-Bradley 1797-BIC
Summary of Contents for Allen-Bradley 1797-BIC
- Page 1 Installation Instructions FLEX Ex Bus Isolator and Flexbus Connector (Cat. No. 1797-BIC, -CEC) Allen-Bradley QUALITY 1797 - CEC Allen-Bradley 1797 - BIC QUALIT Y FLEXBUS FLEXBUS CONNECTOR ISOLATOR +V -V +V -V 1797-CEC 1797-BIC 42641 Use the FLEX Ex bus isolator to interconnect standard FLEX I/O modules to intrinsically safe FLEX Ex modules in the same I/O group.
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Page 2: Product Features
• Up to eight FLEX Ex modules may be attached to the slave side Intermixed Systems The bus isolator modules, 1797-BIC and -CEC, allow you to 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 3 Field Wiring to Zone 0 40088 Note: A maximum of one 1794-CE1 cable and one 1794-CE3 cable can be attached onto the 1797-BIC module. Use the appropriate connection on the explosion-proof enclosure: For Metric Threads on the Connector: Part Number Manufacturer RS-FEED.M...
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Page 4: General 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 ATTENTION 1797-BIC at the same time power is cycled to the associated adapter. 1794 1797 1797... -
Page 5: European Community Directive Compliance
European Community or EEA regions. It has been designed and tested to meet the following directives. EMC Directive The 1797-BIC and -CEC are 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: •... -
Page 6: Customer Connections
Do not apply any non-instrinsically safe signals to the FLEX Ex backplane connector. When using as an intrinsically safe electrical apparatus according to EN50020, the European directives and regulations must be followed. Customer Connections 1797-CEC 1797-BIC FLEX Ex IS flexbus flexbus flexbus flexbus... -
Page 7: 1797-Cec Module Installation
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. Note: 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 8 FLEX Ex Bus Isolator and Flexbus Connector 4. Press down to lock the module on the DIN rail. 41377 If the module does not lock in place, use a screwdriver of 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.
- Page 9 FLEX Ex Bus Isolator and Flexbus Connector 6. To remove the 1797-CEC module, you must work from the right side and remove one module at a time. To disengage a module from its neighbor, place a common flat-bladed screwdriver between the two modules and turn 1/4 turn to separate the modules.
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Page 10: 1797-Bic Module Installation
FLEX Ex Bus Isolator and Flexbus Connector 1797-BIC Module Installation 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 11 6. Install DIN rail locks (supplied with the 1797-BIC module) to meet shock and vibration specifications as listed on page 15. 7. To remove the 1797-BIC, 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.
- Page 12 FLEX Ex Bus Isolator and Flexbus Connector Wiring When connecting wiring, torque terminal ATTENTION screws to 7-9 inch-pounds. Allen-Bradley 1797 - BIC QUALIT Y FLEXBUS ISOLATOR POWER +V -V +V -V 42648 Make certain that you power this device with ATTENTION normal 24V dc.
- Page 13 ISOLATOR Inches (Millimeters) (94) 41413 Repair The 1797-BIC 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 1797-5.13 - August 2001...
- Page 14 FLEX Ex Bus Isolator and Flexbus Connector 1797-CEC Mounting Dimensions 2.72 (69) 3.15 (80) Inches (Millimeters) 2.17 (55) 41413 Repair The 1797-CEC is not field-repairable. Any attempt to open the module will void its warranty. If repair is necessary, return the module to the manufacturer.
- Page 15 FLEX Ex Bus Isolator and Flexbus Connector 1797-BIC Specifications I/O Module Capacity 8 FLEX Ex modules Indicators Power green Isolation Path Flexbus to Flexbus Galvanic to DIN EN50020 Flexbus Slave Side Galvanic to DIN EN50020 to Power Supply Power Consumption 18V - 32V dc @ 0.15A...
- Page 16 -BIC are not included in this number. In intermixed systems, the number of 1797 FLEX Ex I/O modules (attached onto the 1797-BIC) plus the number of 1794 FLEX I/O modules (connected between the adapter and the 1797-CEC) cannot exceed eight.
- Page 17 FLEX Ex Bus Isolator and Flexbus Connector CENELEC Information The isolator type 1797-BIC/* is an associated apparatus according to EN 50020. 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 50020, DIN VDE 0165).
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Page 18: Power Supply
(1797-6.5.6). Application The isolator type 1797-BIC/* functions as a galvanic isolation barrier for signals between a non-intrinsic backplane bus and an intrinsic safe backplane bus. The isolator must be installed in a safe or Zone 2 area. - Page 19 FLEX Ex Bus Isolator and Flexbus Connector For detailed certification information, refer to the IMPORTANT FLEX Ex System Certification Reference Manual, publication 1797-6.5.6. Attention: Avoid electrostatic charge. ControlNet is a trademark of ControlNet International. ControlNet Ex is a trademark of Rockwell Automation. Publication 1797-5.13 - August 2001...
- Page 20 Notes: Publication 1797-5.13 - August 2001 PN 957555-70 Supersedes Publication 1797-5.13 - February 2001 © 2001 Rockwell International Corporation. Printed in USA...