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Installation Instructions
SLC 500 Digital I/O Modules
Input Catalog Numbers 1746-IA4, 1746-IA8, 1746-IA16, 1746-IB8,
1746-IB16, 1746-IC16, 1746-IG16, 1746-IH16, 1746-IM4, 1746-IM8,
1746-IM16, 1746-IN16, 1746-ITB16, 1746-ITV16, 1746-IV8, 1746-IV16
Output Catalog Numbers 1746-OA8, 1746-OA16, 1746-OAP12, 1746-OB8,
1746-OB6EI, 1746-OB16, 1746-OB16E, 1746-OBP8, 1746-OBP16,
1746-OG16, 1746-OV8, 1746-OV16, 1746-OVP16, 1746-OW4, 1746-OW8,
1746-OW16, 1746-OX8
Combination Input/Output Catalog Numbers 1746-IO4, 1746-IO8,
1746-IO12, 1746-IO12DC
Table of Contents
Topic
Page
Important User Information
2
North American Hazardous Location Approval
3
Environment and Enclosure
4
Prevent Electrostatic Discharge
4
Install and Remove the Module
5
Octal Label Kit Installation (for PLC processors only)
6
Wiring Diagrams
17
Apply the Octal Filter Label
6
Apply the Octal Door Label
6
Removable Terminal Blocks
6
Recovery From Blown Fuse/Processor Fault/Processor Shutdown
13
Replacement Fuse Recommendations
13
Replace Fuses
14
Electronically Protected Modules (1746-OB6EI and 1746-OB16E)
14
Specifications
29
2
SLC 500 Digital I/O Modules
Important User Information
Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines
for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell
Automation sales office or online at http://www.rockwellautomation.com/literature/) describes some important differences
between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the
wide variety of uses for solid-state equipment, all persons responsible for applying this 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 resulting from the use
or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and
requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for
actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software
described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is
prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING: Identifies information about practices or circumstances that can cause an explosion in a
hazardous environment, which may lead to personal injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or
death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard and
recognize the consequences.
SHOCK HAZARD: Labels may be on or inside the equipment (for example, drive or motor) to alert people
that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment (for example, drive or motor) to alert people
that surfaces may reach dangerous temperatures.
IMPORTANT
Identifies information that is critical for successful application and understanding of the product.
Overview
In addition to providing the module’s electrical specifications, this document tells you how to:
• install the module into a chassis.
• wire the module’s terminal block.
• install the Octal Filter Label.
Publication 1746-IN027D-EN-P - December 2012
SLC 500 Digital I/O Modules
3
North American Hazardous Location Approval
The following modules are North American Hazardous Location approved: 1746-IA4,
1746-IA8, 1746-IA16, 1746-IB8, 1746-IB16, 1746-IC16, 1746-IG16, 1746-IH16, 1746-IM4,
1746-IM8, 1746-IM16, 1746-IN16, 1746-ITB16, 1746-ITV16, 1746-IV8, 1746-IV16,
1746-OA8, 1746-OA16, 1746-OAP12, 1746-OB8, 1746-OB6EI, 1746-OB16, 1746-OB16E,
1746-OBP8, 1746-OBP16, 1746-OG16, 1746-OV8, 1746-OV16, 1746-OVP16, 1746-OW4,
1746-OW8, 1746-OW16, 1746-OX8, 1746-IO4, 1746-IO8, 1746-IO12, 1746-IO12DC.
The following information applies when
operating this equipment in hazardous
locations:
Informations sur l’utilisation de cet
équipement en environnements
dangereux:
Products marked "CL I, DIV 2, GP A, B, C, D" are
suitable for use in Class I Division 2 Groups A, B, C,
D, Hazardous Locations and nonhazardous locations
only. Each product is supplied with markings on the
rating nameplate indicating the hazardous location