Allen-Bradley Compact 1769-OB32 Manuale utente

Publication 1769-IN031A-EN-P - April 2003

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

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

Publication 1769-IN031A-EN-P - April 2003

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

product.

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

Publication 1769-IN031A-EN-P - April 2003

Module Description

Item Description

1bus lever

(with locking function)

2a upper panel mounting tab

2b lower panel mounting tab

3I/O diagnostic LEDs

4module door with terminal

identification label

5a movable bus connector

with female pins

5b stationary bus connector

with male pins

6nameplate label

7a upper

tongue-and-groove slots

7b lower

tongue-and-groove slots

8a upper DIN rail latch

8b lower DIN rail latch

9write-on label (user ID tag)

10 removable terminal block (RTB)

with finger-safe cover

10a RTB upper retaining screw

10b RTB lower retaining screw

10a

10b

1769-OB32

WARNING -Do Not

Remove RTB Unless

Area is Non-Hazardous

30537-M

COM 1

OUT 14

OUT 12

OUT 10

OUT 8

OUT 6

OUT 4

OUT 2

OUT 0

OUT 15

OUT 13

OUT 11

OUT 9

OUT 7

OUT 5

OUT 3

OUT 1

+VDC 1

COM 2

OUT 30

OUT 28

OUT 26

OUT 24

OUT 22

OUT 20

OUT 18

OUT 16

OUT 31

OUT 29

OUT 27

OUT 25

OUT 23

OUT 21

OUT 19

OUT 17

+VDC 2

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

Publication 1769-IN031A-EN-P - April 2003

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(1)) and to circuits not exceeding

Over Voltage Category II(2) (IEC 60664-1).(3)

Prevent Electrostatic Discharge

Remove Power

(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.

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.

ATTENTION

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.

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

Publication 1769-IN031A-EN-P - April 2003

System Assembly

The module can be attached to the controller or an adjacent I/O module before or

after mounting. For mounting instructions, see Panel Mounting on page 6, or DIN

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.

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

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

Publication 1769-IN031A-EN-P - April 2003

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).

Mounting Expansion I/O

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:

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.

IMPORTANT A 1769-ECR or 1769-ECL right or left end cap must be used to

terminate the end of the serial communication bus.

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.

Controller

Compact I/O

End Cap

Top

Bottom

Side Side

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

Publication 1769-IN031A-EN-P - April 2003

Panel Mounting Using the Dimensional Template

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 page 7. Due to module

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.

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

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.

Host Controller

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

Refer to host controller documentation for this dimension.

Note: Overall hole spacing

tolerance: ±0.4 mm (0.016 in.).

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

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

Publication 1769-IN031A-EN-P - April 2003

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).

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).

TIP 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.

Compact 32-point Solid-state 24V dc Source Output Module 9

Publication 1769-IN031A-EN-P - April 2003

Field Wiring Connections

Grounding the Module

This product is intended to be mounted to a well-grounded mounting surface such

as a metal panel. Additional grounding connections from the module’s mounting

tabs or DIN rail (if used), are not required unless the mounting surface cannot be

grounded. Refer to Industrial Automation Wiring and Grounding Guidelines,

Allen-Bradley publication 1770-4.1, for additional information.

Output Wiring

Basic wiring(1) of output devices(2) to the 1769-OB32 is shown below.

ATTENTION

•Miswiring of the module to an AC power source or

applying reverse polarity will damage the module.

•Be careful when stripping wires. Wire fragments that fall

into a module could cause damage at power up. Once

wiring is complete, ensure the module is free of all metal

fragments.

(1) Recommended Surge Suppression - Use a 1N4004 diode reverse-wired across the load for transistor outputs switching 24V

dc inductive loads. For additional details, refer to Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley

publication 1770-4.1.

(2) Sourcing Output - Source describes the current flow between the I/O module and the field device. Sourcing output circuits

supply (source) current to sinking field devices. Field devices connected to the negative side (DC Common) of the field

power supply are sinking field devices. Field devices connected to the positive side (+V) of the field supply are sourcing field

devices. Europe: DC sinking input and sourcing output module circuits are the commonly used options.

+DC

24Vdc

-DC

COM 1

COM 2

OUT 14

OUT 12

OUT 10

OUT 8

OUT 6

OUT 4

OUT 2

OUT 0

OUT 15

OUT 13

OUT 11

OUT 9

OUT 7

OUT 5

OUT 3

OUT 1

+VDC 1

+DC

24Vdc

-DC

OUT 30

OUT 28

OUT 26

OUT 24

OUT 22

OUT 20

OUT 18

OUT 16

OUT 31

OUT 29

OUT 27

OUT 25

OUT 23

OUT 21

OUT 19

OUT 17

+VDC 2

30527-M

1769-OB32

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

Publication 1769-IN031A-EN-P - April 2003

A removable write-on label is included with the module. Remove the label from the

door, mark the identification of each terminal with permanent ink, and slide the

label back into the door. Your markings (ID tag) will be visible when the module

door is closed.

Removing the Finger-safe Terminal Block

When wiring field devices to the module, it is not necessary to remove the terminal

block. If you remove the terminal block, use the write-on label on the side of the

terminal block to identify the module slot lcation and type. RTB position can be

indicated by circling either the ‘R’ for right side or ‘L’ for left side.

To remove the terminal block, loosen the upper and lower retaining screws. The

terminal block will back away from the module as you remove the screws. When

replacing the terminal block, torque the retaining screws to 0.46 Nm (4.1 in-lbs).

Wiring the Finger-safe Terminal Block

When wiring the terminal block, keep the finger-safe cover in place.

1. Loosen the terminal screws to be wired.

R SLOT# L

MODULE TYPE

30517-M

wiring the

finger-safe terminal

block

upper retaining screw

lower retaining screw

Indice

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