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Allen-Bradley FLEX Ex 1797-OB4D, Installation Instructions Manual, Page: 24 / 28

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Allen-Bradley FLEX Ex 1797-OB4D Installation Instructions Manual Download Page 24

24

    FLEX Ex 24V dc Non-Isolated Source 4 Output Module 

Publication

 1797-5.6 - December 2003

IMPORTANT

A terminal base may or may not have an I/O module 
installed.

   1797- OB4D

Allen-Bradley

B

-

A

0

1

2

3

4

5

6

7

PWR

7

4 Point Source Output Module

FLEX Ex Discrete 
Output I/O Module

LEDs

Female Bus 
Connection

Field Wiring 
Terminals

Terminal Base

Terminal Base 
Key

Male Bus 
Connection

Key Position for 
Terminal Base 
Insertion

42058

Summary of Contents for FLEX Ex 1797-OB4D

Page 1: ...equipment must satisfy themselves that each intended application of this equipment is acceptable In no event will Rockwell Automation Inc be responsible or liable for indirect or consequential damages...

Page 2: ...n and understanding of the product ATTENTION Identifies information about practices or circumstances that can lead to personal injury or death property damage or economic loss Attentions help you iden...

Page 3: ...nal base 5 Press firmly and evenly to seat the module in the terminal base unit The module is seated when the latching mechanism 7 is locked into the module ATTENTION This equipment is considered Grou...

Page 4: ...one 1 This module must not be exposed to the environment Provide a suitable metal enclosure This module has a protection factor of IP20 Installation on Zone 22 When the module is installed in Zone 22...

Page 5: ...e system against electrostatic charge Post a sign near this module Attention Avoid electrostatic charge For your convenience a sign which can be cut out is included in this installation instruction Re...

Page 6: ...ility EMC Part 6 2 Generic Standards Immunity for Industrial Environments EN61326 1997 A1 A2 Electrical Equipment For Measurement Control and Laboratory Use Industrial EMC Requirements ATEX Directive...

Page 7: ...connected to each other Wiring to a 1797 TB3 or TB3S Terminal Base Unit Connect wiring to the terminal base as shown below 1 Connect the individual output wiring to terminals 0 4 8 12 on the 0 15 row...

Page 8: ...nal 50 V on this base unit to terminal 34 on the next base unit 6 If continuing common to the next terminal base unit connect a jumper from terminal 51 V on this base unit to terminal 35 on the next b...

Page 9: ...le such as bus bars and shield terminating feed throughs Output Output Output Output 0 A 0 A 1 Output 1 A 4 A 5 Output 2 A 8 A 9 Output 3 A 12 A 13 V C 34 and C 50 V C 35 and C 51 ATTENTION Do not use...

Page 10: ...e power up check is running B Insertable labels for writing individual input designations C Power Indicator green indicates power applied to module Memory Mapping Dec Bit 15 14 13 12 11 10 09 08 07 06...

Page 11: ...to the factory Where O Output OVL Overload alarm for individual channel FS Fault state 0 is reset and 1 is hold last state FM Detection of output faults 0 is disable and 1 is enable L Latch alarms 0...

Page 12: ...Detection Fault bits in data table and LED per channel blinking red 1 Hz Electronic Protection Lead break overload short circuit Maximum Output Delay Times OFF to ON ON to OFF 1 2ms 1 2ms Indicators...

Page 13: ...ns Operational Temperature 20 to 70o C 4 to 158o F Storage Temperature 40 to 85o C 40 to 185o F Relative Humidity 5 to 95 noncondensing ShockOperating Tested to 15g peak acceleration 11 1 ms pulse wid...

Page 14: ...c format is controlled by Module Data Format Control parameter This data is used when the channel is in analog output mode Digital Output Data Specifies the value of the digital output data to the mod...

Page 15: ...e information contained in the Module Safe State data until the value is set to 1 when normal function continues Analog Fault State Determines how module reacts to faults when channel is used in analo...

Page 16: ...h Retry Mode Latch Retry determines channel operation under wire off fault conditions These bits control the action of two channel groups channels 0 3 and or channels 4 7 When a channel fault occurs t...

Page 17: ...mechanism primarily targets fault behavior for loss of network communication Program Mode Behavior The adapter also monitors the state of the controlling processor or scanner Two states can be detect...

Page 18: ...utput depending upon the module type This mechanism primarily targets fault behavior for loss of backplane communication Power Up State Behavior The system and modules use the Output Enable bit at sys...

Page 19: ...f Electrical Equipment for Use in Hazardous Classified Locations UL 2279 Electrical Equipment for Use in Class I Zone 0 1 and 2 Hazardous Classified Locations UL 508 Industrial Control Equipment CSA C...

Page 20: ...each channel is separated in accordance with the National Electric Code NEC or Canadian Electric Code CEC Table 1 Wiring Method Channel Terminals Voc V Isc mA Vt V It mA Groups Ca F La mH 1 and 2 Any...

Page 21: ...Entity Concept parameters of Voc 5 8V Isc 400mA To any intrinsically safe device or associated apparatus with Entity Concept parameters of Voc 9 5V Isc 1A To any IS device with Entity Concept paramete...

Page 22: ...ble and Li Lcable respectively for the intrinsically safe apparatus Simple apparatus is defined as a device which neither generates nor stores more than 1 2V 0 1A 20 J or 25mW Wiring methods must be i...

Page 23: ...1 Hazardous Classified Locations FM C1 No 3615 1989 Explosionproof Electrical Equipment General Requirements FM C1 No 3810 1989 1995 Electrical and Electronic Test Measuring and Process Control Equip...

Page 24: ...base may or may not have an I O module installed 1797 OB4D Allen Bradley B A 0 1 2 3 4 5 6 7 PWR 7 4 Point Source Output Module FLEX Ex Discrete Output I O Module LEDs Female Bus Connection Field Wiri...

Page 25: ...to the General FM Certification Information on page 29 1 of 1797 6 5 6 From FM approved devices 1797 PS2N For connection to other modules refer to the General FM Certification Information on page 29 1...

Page 26: ...values of Ca and La of the associated apparatus are greater than Ci Ccable and Li Lcable respectively for the intrinsically safe apparatus Simple apparatus is defined as a device which neither genera...

Page 27: ...2003 Output Voltage Current Capability IMPORTANT For detailed certification information refer to the FLEX Ex System Certification Reference Manual publication 1797 6 5 6 Voltage mA 30 25 20 15 10 5 0...

Page 28: ...support rockwellautomation com Installation Assistance If you experience a problem with a hardware module within the first 24 hours of installation please review the information that s contained in t...

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