Rockwell Automation 1762-OB8 User Manual

Installation Instructions

MicroLogix 1762-OB8 Solid-State 24V DC Source
Output Module

Catalog Number 1762-OB8

Table of Contents

Top ic Page

Description 3
Installation 4
Mounting 5
System Assembly 7
Field Wiring Connections 8
I/O Memory Mapping 10
Specifications 11
North American Hazardous Location Approval 14

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2 MicroLogix 1762-OB8 Solid-State 24V DC Source Output Module

For More Information

Resource Description

MicroLogix 1200 Programmable Controllers User
Manual, publication

MicroLogix 1200 Programmable Controllers
Installation Instructions, publication

MicroLogix 1200 Memory Module and/or Real Time
Clock Installation Instructions, publication

1762- IA8 120V AC Input Module Installation
Instructions, publication 1762-IN002.

1762-OW8 Relay Output Module, publication

1762-IN003.

1762-IQ8 DC Input Module Installation Instructions,
publication 1762-IN004.

1762-IF2OF2 Analog Input/Output Module Installation
Instructions, publication 1762-IN005.

1762-OA8 Solid-State Output Module, publication

1762-IN007.

Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1.

1762-UM001.

1762-IN006.

1762-IN001.

If you would like a manual, you can:

• download a free electronic version from the Internet:

http://literature.rockwellautomation.com

• purchase a printed manual by contacting your local Allen-Bradley distributor or
Rockwell Automation representative

Information on installing, wiring, and operating a
MicroLogix 1200 Programmable Controller

Installation guide for the MicroLogix 1200
Programmable Controller.

Installation guide for the MicroLogix 1200 Memory
Module and Real Time Clock.

Installation guide for the 1762-IA8 Discrete Input
Module

Installation guide for the 1762-OW8 Relay Output
Module

Installation guide for the 1762-IQ8 Discrete Input
Module

Installation guide for the 1762-IF2OF2 Analog I/O
Module

Installation guide for the 1762-OA8 Solid-State Output
Module

More information on proper wiring and grounding
techniques.

Publication 1762-IN008B-EN-P - July 2013

Description

1a

7

6

MicroLogix 1762-OB8 Solid-State 24V DC Source Output Module 3

9

3

1b

4

Item Description Item Description

1a upper panel mounting tab 5 bus connector cover

1b lower panel mounting tab 6 flat ribbon cable with bus connector

2 I/O diagnostic LEDs 7 terminal block

3 module door with terminal identification

label

4 bus connector with male pins 9 pull loop

2

8 DIN rail latch

5

1a

6

8

(female pins)

2

1b

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4 MicroLogix 1762-OB8 Solid-State 24V DC Source Output Module

ATTENTION

ATTENTION

Installation

1762 I/O is suitable for use in an industrial environment when installed in accordance with these
instructions. Specifically, this equipment is intended for use in clean, dry environments

(Pollution degree 2
60664-1).

(3)

Prevent Electrostatic Discharge

Remove Power

(1)

) and to circuits not exceeding Over Voltage Category II

Electrostatic discharge can damage integrated circuits or semiconductors if
you touch bus connector pins. Follow these guidelines when you handle
the module:

• Touch a grounded object to discharge static potential.

• Wear an approved wrist-strap grounding device.

• Do not touch the bus connector or connector pins.

• Do not touch circuit components inside the module.

• If available, use a static-safe work station.

• When not in use, keep the module in its static-shield box.

(2)

(IEC

(1) Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that occasionally a

(2) Over Voltage Category II is the load level section of the electrical distribution system. At this level transient voltages are

(3) Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC) designations.

Publication 1762-IN008B-EN-P - July 2013

Remove power before removing or installing this module. When you
remove or install a module with power applied, an electrical arc may occur.
An electrical arc can cause personal injury or property damage by:

• sending an erroneous signal to your system’s field devices, causing
unintended machine motion

• causing an explosion in a hazardous environment

• causing permanent damage to the module’s circuitry

Electrical arcing causes excessive wear to contacts on both the module and
its mating connector. Worn contacts may create electrical resistance.

temporary conductivity caused by condensation shall be expected.

controlled and do not exceed the impulse voltage capability of the product’s insulation.

MicroLogix 1762-OB8 Solid-State 24V DC Source Output Module 5

ATTENTION

TIP

ATTENTION

MicroLogix

1200

1762 I/O

1762 I/O

1762 I/O

Side

Side

Top

Bottom

Mounting

Do not remove protective debris strip until after the module and all other
equipment near the module is mounted and wiring is complete. Once
wiring is complete and the module is free of debris, carefully remove
protective debris strip. Failure to remove strip before operating can cause
overheating.

Minimum Spacing

Maintain spacing from
enclosure walls, wireways,
adjacent equipment, etc.
Allow 50.8 mm (2 in.) of
space on all sides for adequate
ventilation, as shown:

1762 expansion I/O may be mounted horizontally only.

During panel or DIN rail mounting of all devices, be sure that all debris
(metal chips, wire strands, etc.) is kept from falling into the module.
Debris that falls into the module could cause damage when power is
applied to the module.

Publication 1762-IN008B-EN-P - July 2013