Rockwell Automation 1769-OB32 Installation Instructions

Installation Instructions

Compact 32-point Solid-state 24V dc Source Output Module

Catalog Number 1769-OB32

Use this document as a guide when installing a Compact™ 32-point solid-state 24V dc source output module.

Topic Page

Important User Information 2

Module Description 3

Module Installation 4

System Assembly 5

Mounting Expansion I/O 6

Replacing a Single Module within a System 8

Field Wiring Connections 9

I/O Memory Mapping 12

1769-OB32 Configuration File 13

Spare/Replacement Module Parts 15

Specifications 16

Hazardous Location Considerations 21

For More Information 22

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2 Compact 32-point Solid-state 24V dc Source Output Module

Important User Information

Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. In no event will Rockwell Automation be responsible or liable for indirect or consequential damage resulting from the use or application of these products.

Any illustrations, charts, sample programs, and layout examples shown in this publication are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Rockwell Automation does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application, Installation and Maintenance of Solid-State Control (available from your local Rockwell Automation office), describes some important differences between solid-state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or part, without written permission of Rockwell Automation, is prohibited.

Throughout this publication, notes may be used to make you aware of safety considerations. The following annotations and their accompanying statements help you to identify a potential hazard, avoid a potential hazard, and recognize the consequences of a potential hazard:

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.

ATTENTIO

Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss.

IMPORTANT

Publication 1769-IN031A-EN-P - April 2003

Identifies information that is critical for successful application and understanding of the product.

Compact 32-point Solid-state 24V dc Source Output Module 3

Module Description

10a

10b

OUT 0

OUT 2

OUT 4

OUT 6

OUT 8

OUT 10

OUT 12

OUT 14

COM 1

WARNING -Do Not Remove RTB Unless

Area is Non-Hazardous

+VDC 1

OUT 1

OUT 3

OUT 5

OUT 7

OUT 9

OUT 11

OUT 13

OUT 15

1769-OB32

Item Description

1 bus lever

(with locking function)

+VDC 2

OUT 16

OUT 17

OUT 18

OUT 19

OUT 20

OUT 21

OUT 22

OUT 23

OUT 24

OUT 25

OUT 26

OUT 27

OUT 28

OUT 29

OUT 30

OUT 31

COM 2

2a upper panel mounting tab

2b lower panel mounting tab

3 I/O diagnostic LEDs

4 module door with terminal

identification label

5a movable bus connector

with female pins

5b stationary bus connector

with male pins

6 nameplate label

7a upper

tongue-and-groove slots

7b lower

tongue-and-groove slots

8a upper DIN rail latch

8b lower DIN rail latch

9 write-on label (user ID tag)

30537-M

10 removable terminal block (RTB)

with finger-safe cover

10a RTB upper retaining screw

10b RTB lower retaining screw

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4 Compact 32-point Solid-state 24V dc Source Output Module

Module Installation

Compact 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 Over Voltage Category II

(2)

(IEC 60664-1).

Prevent Electrostatic Discharge

(1)

) and to circuits not exceeding

(3)

ATTENTION

Remove Power

ATTENTION

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.

Remove power before removing or inserting this module. When you remove or insert 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

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

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

temporary conductivity caused by condensation shall be expected.

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

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

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

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Compact 32-point Solid-state 24V dc Source Output Module 5

System Assembly

The module can be attached to the controller or an adjacent I/O module before or after mounting. For mounting instructions, see

Rail Mounting on page 8. To work with a system that is already mounted, see Replacing a Single Module within a System on page 8.

The following procedure shows you how to assemble the Compact I/O system.

Panel Mounting on page 6, or DIN

1. Disconnect power.

2. Check that the bus lever of the module to be installed is in the unlocked

(fully right) position.

3. Use the upper and lower tongue-and-groove slots (1) to secure the modules

together (or to a controller).

4. Move the module back along the tongue-and-groove slots until the bus

connectors (2) line up with each other.

5. Push the bus lever back slightly to clear the positioning tab (3). Use your

fingers or a small screw driver.

6. To allow communication between the controller and module, move the bus

lever fully to the left (4) until it clicks. Ensure it is locked firmly in place.

ATTENTION

When attaching I/O modules, it is very important that the bus connectors are securely locked together to ensure proper electrical connection.

30536-M

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6 Compact 32-point Solid-state 24V dc Source Output Module

7. Attach an end cap terminator (5) to the last module in the system by using

the tongue-and-groove slots as before.

8. Lock the end cap bus terminator (6).

IMPORTANT

A 1769-ECR or 1769-ECL right or left end cap must be used to terminate the end of the serial communication bus.

Mounting Expansion I/O

ATTENTION

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 on power up.

Minimum Spacing

Maintain spacing from enclosure walls, wireways, adjacent equipment, etc. Allow 50 mm (2 in.) of space on all sides for adequate ventilation, as shown:

Side Side

Controller

Top

Compact I/O

Bottom

Compact I/O

End Cap

Compact I/O

Panel Mounting

Mount the module to a panel using two screws per module. Use M4 or #8 panhead screws. Mounting screws are required on every module.

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Compact 32-point Solid-state 24V dc Source Output Module 7

Panel Mounting Using the Dimensional Template

Spacing for one-and-a half-wide modules 52.5 mm (2.067 in.)

Refer to host controller documentation for this dimension.

Spacing for single-wide modules 35 mm (1.378 in.)

Note: Overall hole spacing tolerance: ±0.4 mm (0.016 in.).

Host Controller

Locate holes every 17.5 mm (0.689 in.) to allow for a mix of single-wide and one-and-a-half-wide modules (e.g. 1769-OA16).

Panel Mounting Procedure Using Modules as a Template

The following procedure allows you to use the assembled modules as a template for drilling holes in the panel. If you have sophisticated panel mounting equipment, you can use the dimensional template provided on mounting hole tolerance, it is important to follow these procedures:

1. On a clean work surface, assemble no more than three modules.

2. Using the assembled modules as a template, carefully mark the center of all

module-mounting holes on the panel.

3. Return the assembled modules to the clean work surface, including any

previously mounted modules.

4. Drill and tap the mounting holes for the recommended M4 or #8 screw.

5. Place the modules back on the panel, and check for proper hole alignment.

6. Attach the modules to the panel using the mounting screws.

TIP

If mounting more modules, mount only the last one of this group and put the others aside. This reduces remounting time during drilling and tapping of the next group.

page 7. Due to module

7. Repeat steps 1 to 6 for any remaining modules.

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8 Compact 32-point Solid-state 24V dc Source Output Module

DIN Rail Mounting

The module can be mounted using these DIN rails: 35 x 7.5 mm (EN 50 022 - 35 x 7.5) or 35 x 15 mm (EN 50 022 - 35 x 15).

Before mounting the module on a DIN rail, close the DIN rail latches. Press the DIN rail mounting area of the module against the DIN rail. The latches will momentarily open and lock into place.

Replacing a Single Module within a System

The module can be replaced while the system is mounted to a panel (or DIN rail).

1. Remove power. See important note on page 4.

2. On the module to be removed, remove the upper and lower mounting

screws from the module (or open the DIN latches using a flat-blade or phillips style screw driver).

3. Move the bus lever to the right to disconnect (unlock) the bus.

4. On the right-side adjacent module, move its bus lever to the right (unlock)

to disconnect it from the module to be removed.

5. Gently slide the disconnected module forward. If you feel excessive

resistance, check that the module has been disconnected from the bus, and that both mounting screws have been removed (or DIN latches opened).

TIP

6. Before installing the replacement module, be sure that the bus lever on the

module to be installed, and on the right-side adjacent module are in the unlocked (fully right) position.

7. Slide the replacement module into the open slot.

8. Connect the modules together by locking (fully left) the bus levers on the

replacement module and the right-side adjacent module.

9. Replace the mounting screws (or snap the module onto the DIN rail).

Publication 1769-IN031A-EN-P - April 2003

It may be necessary to rock the module slightly from front to back to remove it, or, in a panel-mounted system, to loosen the screws of adjacent modules.

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