Allen-Bradley 1794-OB8EP Installation Instructions Manual
24v dc flex i/o electronically fused 8 output module
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- Installation instructions manual (28 pages) ,
- Installation instructions manual (16 pages)
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24V dc FLEX I/O
Electronically Fused
8 Output Module
(Cat. No. 1794-OB8EP)
4
Module Installation
This module mounts on a 1794 terminal base unit.
1. Rotate keyswitch (1) on terminal base unit (2) clockwise to position 2
as required for this type of module.
2. Make certain the flexbus connector (3) is pushed all the way to the left
to connect with the neighboring terminal base/adapter. You cannot
install the module unless the connector is fully extended.
3. Make sure that the pins on the bottom of the module are straight so
they will align properly with the connector in the terminal base unit.
4. Position the module (4) with its alignment bar (5) aligned with the
groove (6) on the terminal 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.
FLEX I/O is a trademark of Rockwell Automation
Installation Instructions
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1
2
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Publication 1794 5.20 - April 1999
AB Driv
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Summary of Contents for Allen-Bradley 1794-OB8EP
- Page 1 Installation Instructions 24V dc FLEX I/O Electronically Fused 8 Output Module (Cat. No. 1794-OB8EP) Module Installation This module mounts on a 1794 terminal base unit. 1. Rotate keyswitch (1) on terminal base unit (2) clockwise to position 2 as required for this type of module.
- Page 2 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 following Allen-Bradley publications: Industrial Automation Wiring and Grounding Guidelines For Noise Immunity, publication 1770-4.1...
- Page 3 24V dc FLEX I/O Electronically Fused 8 Output Module 3 Wiring to a 1794 TB3 or TB3S Terminal Base Unit 1. Connect individual output wiring (customer loads) to even-numbered terminals 0 through 14 on the 0 to 15 row (A). 2.
- Page 4 24V dc FLEX I/O Electronically Fused 8 Output Module 1794 TB3, TB3S Output Channel Output Channel Output Terminal Common Terminal /B 17 /B 19 /B 21 /B 23 /B 25 A 10 A 11 /B 27 A 12 A 13 /B 29 A 14 A 15...
- Page 5 C = Power Terminals C 34 and C 51, and odd numbered output common terminals 1 thru 15 Indicators Allen Bradley 1794-OB8EP 8 ELECTRONICALLY FUSED OUTPUT A = Status Indicators (O) – yellow – show status of individual outputs. B = Diagnostic indicators (D) – red – when lit, indicates fault C = Insertable label for writing input designations D = Reset button –...
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Page 6: Using The Fault Reset Button
24V dc FLEX I/O Electronically Fused 8 Output Module Using the Fault Reset Button When you press the manual reset button: the fault indicator for the faulted output turns off for about 1.2s (the faulted output will not attempt to turn on during this delay) after the 1.2s delay, the faulted output attempts to turn on if the external condition causing the fault is corrected, the output will remain on, the fault indicator is off, and the status indicator is on... - Page 7 24V dc FLEX I/O Electronically Fused 8 Output Module 7 Specifications - 8 Output Module Cat. No. 1794 OB8EP Number of Outputs 8 (1 group of 8), non isolated, sourcing Module Location Cat. No. 1794 TB3, TB3S, and TBN Terminal Base ON state Voltage Range 19.2V dc minimum 24V dc nominal;...
- Page 8 24V dc FLEX I/O Electronically Fused 8 Output Module Specifications - 8 Output Module Cat. No. 1794 OB8EP Environmental Conditions Operational Temperature 0 to 55 C (32 to 131 Storage Temperature -40 to 85 C (-40 to 185 Relative Humidity 5 to 95% noncondensing Shock Operating...
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