Rockwell Automation Allen-Bradley 1769-OF8V Bedienungsanleitung

Publication 1769-IN066D-EN-P - June 2010

Installation Instructions

Compact 1769-OF8V Analog Output Module

Inside

Module Description ..................................................................................2

Module Installation...................................................................................3

System Assembly......................................................................................4

Mounting Expansion I/O ...........................................................................5

Replacing a Single Module within a System ...........................................7

Module Spare/Replacement Parts ...........................................................8

Field Wiring Connections..........................................................................8

I/O Memory Mapping .............................................................................12

Specifications .........................................................................................23

Hazardous Location Considerations .......................................................26

Environnements dangereux ....................................................................27

For More Information..............................................................................28

2Compact 1769-OF8V Analog Output Module

Publication 1769-IN066D-EN-P - June 2010

Module Description

Item Description

1bus lever

(with locking function)

2a upper panel mounting tab

2b lower panel mounting tab

3module status LED

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

Compact 1769-OF8V Analog Output Module 3

Publication 1769-IN066D-EN-P - June 2010

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 or the terminal block. 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.

4Compact 1769-OF8V Analog Output Module

Publication 1769-IN066D-EN-P - June 2010

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 7. To work with a system that is already mounted, see “Replacing a Single

Module within a System” on page 7.

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 screwdriver.

Compact 1769-OF8V Analog Output Module 5

Publication 1769-IN066D-EN-P - June 2010

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.

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:

ATTENTION

When attaching I/O modules, it is very important that the bus connectors

are securely locked together to ensure proper electrical connection.

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.

Top

Bottom

Side Side

Host Controller

Compact I/O

End Cap

6Compact 1769-OF8V Analog Output Module

Publication 1769-IN066D-EN-P - June 2010

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.

Panel Mounting Using the Dimensional Template

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 6. 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

Compact I/O

End Cap

132 (5.197)

122.6±0.2

(4.826±0.008)

(1.38)

28.5

(1.12)

Refer to host controller documentation for this dimension.

For more than 2 modules: (number of modules-1) X 35mm (1.38 in.)

NOTE: All dimensions are in mm (inches).

Hole spacing tolerance: ±0.4 mm (0.016 in.)

Compact 1769-OF8V Analog Output Module 7

Publication 1769-IN066D-EN-P - June 2010

DIN Rail Mounting

The module can be mounted using the following 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). Follow the

steps below in order:

1. Remove power. See important note on page 3.

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 screwdriver).

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.

8Compact 1769-OF8V Analog Output Module

Publication 1769-IN066D-EN-P - June 2010

Module Spare/Replacement Parts

•Terminal block, catalog number 1769-RTBN12 (1 per kit)

(A-B part number A22112-319-01)

•Door, catalog number 1769-RD (2 per kit)

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.

System Wiring Guidelines

Consider the following when wiring your system:

•All module commons (ANLG COM) are connected in the analog module. The analog

common (ANLG COM) is not connected to earth ground inside the module.

•Channels are not isolated from each other.

•Use Belden™ 8761, or equivalent, shielded wire.

•Under normal conditions, the drain wire and shield junction must be connected to

earth ground, via a panel or DIN rail mounting screw at the analog I/O module end.

Keep the shield connection to ground as short as possible.(1)

•To ensure optimum accuracy, limit overall cable impedance by keeping your cable as

short as possible. Locate the I/O system as close to your sensors or actuators as your

application will permit.

•Voltage outputs (Vout 0+ to Vout 7+) of the 1769-OF8V module are referenced to

ANLG COM. Load resistance for a voltage output channel must be equal to or

greater than 1K Ω.

(1) In environments where high frequency noise may be present, it may be necessary to ground the shield via a 0.1µF capacitor

at the load end and also ground the module end without a capacitor.

Compact 1769-OF8V Analog Output Module 9

Publication 1769-IN066D-EN-P - June 2010

External Power Switch

The 1769-OF8V has an external 24V dc power switch which gives you the option of using an

external power supply. The switch is located in on the lower left portion of the module’s

circuit board, as shown below. With this switch pressed on the top (default), 24V dc power is

drawn from the 1769 system power supply via the 1769 I/O bus. Pressed on the bottom, 24V

dc power is drawn from the external power supply.

Wire the external power supply to the module via the module’s terminal block. The external

power supply must be rated Class 2, with a 24V dc range of 20.4 to 26.4V dc and 125 mA

minimum.

External Power Switch

Pressed on the Top

Bus Power (default)

Pressed on the Bottom

External Power

10 Compact 1769-OF8V Analog Output Module

Publication 1769-IN066D-EN-P - June 2010

Wiring Output Devices

Basic wiring of output devices is shown below.

Labeling the Terminals

A removable, write-on label is provided 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.

ATTENTION

•Miswiring of the module to an AC/DC source 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.

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