Rockwell Automation 1771-OQB User Manual

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Installation Instructions

Isolated 24V dc Output Module

(Cat. No. 1771-OQ Series B)

Important User Information

Use this document as a guide when installing the catalog number 1771-OQ Series B isolated dc output module.

To See page

Important User Information 1

Preinstallation Considerations 3

Set the Jumper Configuration 3

Calculate Power Requirements 4

Key the Backplane Connector 5

Install the Field Wiring Arm 5

Connect Wiring to the Field Wiring Arm 6

Interpreting the Status Indicators 8

Replacing the Fuses 8

Specifications 9

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.ab.com/manuals/gi) 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.

1 Publication 1771-IN081B-EN-P - June 2004

2 Isolated 24V dc Output Module

Throughout this manual we use notes to make you aware of safety considerations.

WARNING

IMPORTANT

ATTENTION

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.

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

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

• recognize the consequence

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication 60664-1), at altitudes up to 2000 meters without derating.

This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11. Without appropriate precautions, there may be potential difficulties ensuring electromagnetic compatibility in other environments due to conducted as well as radiated disturbance.

This equipment is supplied as "open type" equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

See NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosure. Also, see the appropriate sections in this publication, as well as the Allen-Bradley publication 1770-4.1 ("Industrial Automation Wiring and Grounding Guidelines"), for additional installation requirements pertaining to this equipment.

Publication 1771-IN081B-EN-P - June 2004

Isolated 24V dc Output Module 3

Preinstallation Considerations

Set the Jumper Configuration

ATTENTION

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component boards.

• Do not touch circuit components inside the equipment.

• If available, use a static-safe workstation.

• When not in use, store the equipment in appropriate static-safe

packaging.

This module contains soldered jumpers which must be removed when using certain output devices, such as solenoids. These jumpers limit the effects of noise. These jumpers are not reusable. Make certain that you will not be using a particular output for other uses before clipping the jumper.

Your module contains a jumper for each output. Under normal conditions, these jumpers are left in the position as shipped. When using solenoids as an output device, remove the jumper on the circuit board. Removing the jumper changes the off-state clamping voltage from -0.7V dc to -15.7V dc. This decreases the turnoff time of the solenoid, allowing it to energize faster. Follow the procedure listed below for removing a jumper. Refer to Figure 1.

1. Remove the plastic cover on the left front side of the module by removing two screws.

2. Locate the jumper which corresponds to your output. Note: The jumpers are usually brown with a black band.

3. Clip both ends of the jumper with diagonal cutters.

ATTENTION

Do not use a soldering tool to remove the jumper. This could cause damage to the adjacent components or the entire circuit board.

4. Replace the cover and secure with two screws

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Figure 1 Configuration Jumper Locations

Black Band

Clip leads here.

Jumper 1 - corresponds to output 0

Jumper 2 - corresponds to output 1

Jumper 3 - corresponds to output 2

Jumper 4 - corresponds to output 3

Calculate Power Requirements

Jumper 5 - corresponds to output 4

Jumper 6 - corresponds to output 5

Jumper 7 - corresponds to output 6

Jumper 8 - corresponds to output 7

1065-I

The module receives its power through the 1771 I/O chassis backplane from the chassis power supply. The module requires 225mA from the output of this supply .

Add this current to the requirements of all other modules in the I/O chassis to prevent overloading the chassis backplane and/or backplane power supply.

ATTENTION

Do not insert or remove modules from the I/O chassis while system power is applied. Failure to observe this rule could result in:

Publication 1771-IN081B-EN-P - June 2004

• module damage or degradation of performance

• injury or equipment damage due to possible

unexpected operation.

Isolated 24V dc Output Module 5

Key the Backplane Connector

ATTENTION

Observe the following precautions when inserting or removing keys:

• insert or remove keys with your fingers

• make sure that key placement is correct

Incorrect keying or the use of a tool can result in damage to the backplane connector and possible system faults.

Install the Field Wiring Arm

Place your module in any slot in the chassis except the leftmost slot which is reserved for processors or adapters.

Position the keying bands in the backplane connectors to

ATTENTION

correspond to the key slots on the module.

I/O chassis

Y ou can change the position of these bands if subsequent system design and rewiring makes insertion of a different type of module necessary.

Remove power from the 1771 I/O chassis backplane and

Place the keying bands:

- between 2 and 4

- between 10 and 12

Upper Connector

11022-I

field wiring arm before removing or installing the I/O module. Failure to remove power from the backplane or wiring arm could cause:

Place the module in the card guides on the top and bottom of the

chassis that guide the module into position.

Important: Apply firm even pressure on the module to seat it

into its backplane connector .

1771-A1B, -A2B, -A3B, -A4B I/O chassis

Snap the chassis latch over

the top of the module to

secure it.

• module damage, degradation of performance, or injury.

• injury or equipment damage due to possible unexpected operation.

1771-A1B, -A2B, -A4B Series B I/O chassis

Swing the chassis locking bar down into place to secure the modules. Make sure the locking pins engage.

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Attach the wiring arm (1771-WF) to the horizontal bar

at the bottom of the I/O chassis.

The wiring arm pivots upward and connects with the module so you can install or remove the module without disconnecting the wires.

1771-WF

The 1771-OQ module is a modular component of the 1771 I/O system requiring a properly installed system chassis. Refer to publication 1771-IN075 for detailed information on acceptable chassis, proper installation, and grounding requirements. Limit the maximum adjacent slot power dissipation to 15.5W maximum.

Connect Wiring to the Field Wiring Arm

Make wiring connections to the module through the field wiring arm (cat. no. 1771-WF). The arm pivots on the I/O chassis to connect with terminals on the front of the module and acts as a terminal strip. The wiring arm allows the module to be removed from the chassis without disconnecting the wiring.

ATTENTION

Remove power from the 1771 I/O chassis backplane and field wiring arm before removing or installing the I/O module.

• Failure to remove power from the backplane or wiring arm could cause module damage, degradation of performance, or injury.

• Failure to remove power from the backplane could cause injury or equipment damage due to possible unexpected operation.

1. Make certain all power is removed from the module before making wiring connections.

2. Swing the wiring arm up into position on the front of the module. The locking tab on the module will secure it into place.

Publication 1771-IN081B-EN-P - June 2004

IMPORTANT

The field wiring arm terminal identification number is not the same as the number of the bit which controls that output

Figure 2 Connection Diagram

Isolated 24V dc Output Module 7

Not used +24V dc

Output 0 Output 1

dc Common dc Common Output 2

Output 3 +24V dc

+24V dc

Output 4 Output 5 dc Common

dc Common

Output 6 Output 7 +24V dc Not used

15 14 13

11 10

7 6

5 4

2 1

Output Device

User 24V

dc Supply

User 24V

dc Supply

User 24V

dc Supply

User 24V

dc Supply

Field Wiring Arm Cat. No. 1771-WF

1066-I

(Actual wiring runs in this direction.)

Connect your output device wiring to the field wiring arm as shown in Figure

2. Use two wires per output. Connect only one wire to a terminal. When multiple connections to a terminal are required, use an auxiliary terminal strip. Use stranded 14 gauge wire to minimize the voltage drop over long cable distances.

ATTENTION

Observe proper polarity with dc power connections. Reverse polarity, or application of ac voltage could damage the module.

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Interpreting the Status Indicators

Replacing the Fuses

The front panel of your module contains 8 red status indicators (below). The red status indicators are on when the associated output is on.

Not used Output 0 Output 1

Output 2 Output 3 Output 4 Output 5

Output 6 Output 7

Status Indicators

1067-I

To replace a blown fuse, proceed as follows:

ATTENTION

Remove power from the 1771 I/O chassis backplane and field wiring arm before removing or installing an I/O module.

• Failure to remove power from the backplane or wiring arm could cause module damage, degradation of performance, or injury.

• Failure to remove power from the backplane could cause injury or equipment damage due to possible unexpected operation.

1. Turn off power to the chassis.

2. Remove the module from the I/O chassis.

3. Remove the 2 screws securing the front cover on the unlabelled side of

the module. Note: One fuse protects 2 outputs.

4. Remove the blown fuse from fuse holder, and replace with a 2.5A, 3AG normal blow fuse.

5. Replace the cover and secure with screws removed in step 3.

6. Reinsert the module into I/O chassis.

Publication 1771-IN081B-EN-P - June 2004

7. Turn on power to chassis.

Specifications

Isolated 24V dc Output Module 9

Specifications

Outputs per Module 8 (4 groups of 2, each group sharing a common dc supply)

Module Location 1771-A1B, thru -A4B or later I/O chassis

Output Voltage Range 24V dc, 2.25A, 4A inrush derated linearly from 37°C to 1.25A, 24V dc

@ 60°C

2.25A per group derated linearly from 37°C to 1.25A

Maximum Output Current 2.25A per output

2.25A per group

9.0A per module

Maximum Surge Current 4.0A for 10ms per output

Maximum On-state Voltage Drop

Maximum Off-stage Leakage Current

Maximum Power Rating 4.5W per output

Output Signal Delay 10ms on or off

Power Dissipation 19.1W (max.), 1.1W (min.)

Thermal Dissipation 65.1 BTU/hr (max.), 3.75 BTU/hr (min.)

Backplane Current 225mA @ 5V

Isolation Voltage 50V continuous, tested to withstand 500V for 60s

Envitonmental Conditions

Operating Temperative IEC 60068-2-1 (Test Ad, Operating Cold),

Storage Temperature IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),

Relative Humidity IEC 60068-2-30 (Test Db, Unpackaged Nonoperating Damp Heat):

Shock

Operating Nonoperating

Vibration IEC 60068-2-6 (Test Fc, Operating):

Radiated RF Immunity IEC 61000-4.3

EFT/B Immunity IEC 61000-4.4

Surge Transient Immunity IEC 61000-4.5

Conducted RF Immunity IEC 61000-4.6

2V dc @ 2.25A

1.0mA per output @ 34V dc, 25°C

IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 0 to 60°C (32 to 140°F)

IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat), IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock):

-40 to 85°C (-40 to 185°F)

5 to 95% noncondensing

IEC 60068-2-27 (Test Ea, Unpackaged Shock): 30g 50g

2g @ 10-500Hz

10V/m with 1kHz sine-wave 80%AM from 30MHz to 1000MHz 10V/m with 200Hz 50% Pulse 100%AM at 900Mhz

±1kV at 5kHz on signal ports

±1kV line-line(DM) and ±2kV line-earth(CM) on signal ports

10Vrms with 1kHz sine-wave 80%AM from 150kHz to 30MHz

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Specifications

Emmisions CISPR 11

Group 1, Class A (with appropriate enclosure)

Enclosure Type Rating None (open-style)

Fuse 2.5A, 250V normal blow fuse, Cooper Bussman AGC 2.5 or Littelfuse

31202.5

Field Wiring Arm Cat. No. 1771-WF

Wiring Arm Screw Torque 7 pound-inches (0.8Nm)

Conductors

Wire Size

Rockwell Automation 1771-OQB User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Important User Information

Preinstallation Considerations

Set the Jumper Configuration

Calculate Power Requirements

Key the Backplane Connector

Install the Field Wiring Arm

Connect Wiring to the Field Wiring Arm

Interpreting the Status Indicators

Replacing the Fuses

Specifications