Rockwell Automation 1734-SSI User Manual

POINT I/O Synchronous Serial Interface Absolute Encoder Module

1734-SSI

User Manual

Important User Information

SHOCK HAZARD

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://literature.rockwellautomation.com/) 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.

Throughout this manual, when neces sary, we u se notes t o make you awa re of safety considerations.

WARNING

IMPORTANT

ATTENTION

BURN HAZARD

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

Labels may be located on or inside the equipment (for example, drive or motor) to alert people that dangerous voltage may be present.

Labels may be located on or inside the equipment (for example, drive or motor) to alert people that surfaces may be dangerous temperatures.

Allen-Bradley, ControlLogix, POINT I/O, POINTBus, RSLinx, RSLogix 5000, RS Networx, and RSNetworx for DeviceNet are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.

Summary of Changes

This publication contains new and revised information not in the last release.

New and Revised Information

See the table for a summary of the major changes in this manual.

Chapter Change

Chapter 4 Set and Operate Your Module

Updated section on operation of the Data Latch and Comparator features.

Chapter 5 Diagnose Problems

Appendix A Configure Modules in RSLogix 5000 Software

Added a column on recommended actions in all of the troubleshooting charts.

Updated procedures on how to use the Watch Position dialog.

Change Bars

W e marked with change bars (as shown with this paragraph) the areas in this manual that are different from previous editions and indicate the addition of new or revised information.

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Summary of Changes 2

Notes:

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Preface

Install the Module

Configure the Module

Purpose of This Manual. . . . . . . . . . . . . . . . . . . . . . . Preface-1

Who Should Use This Manual . . . . . . . . . . . . . . . . . . Preface-1

Related Products and Documentation. . . . . . . . . . . . . Preface-2

Chapter 1

About This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

About the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Install the Mounting Base . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Install a Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Install the Removable Terminal Block . . . . . . . . . . . . . . . . 1-5

Remove a Mounting Base . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Wire the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Chapter 2

About This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Add the Adapter to Your Network. . . . . . . . . . . . . . . . . . . 2-1

Add I/O Modules to Your Network . . . . . . . . . . . . . . . . . . 2-2

Set the Encoder’s Parameters . . . . . . . . . . . . . . . . . . . . . . . 2-3

Check I/O Status and View the EDS File . . . . . . . . . . . . . . 2-5

Communicate with Your Module

Set and Operate Your Module

Diagnose Problems

Chapter 3

About This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

About Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Communicate Real-time Information . . . . . . . . . . . . . . . . . 3-3

Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Chapter 4

About This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Module Configuration Value Definitions. . . . . . . . . . . . . . . 4-1

Operation of the Data Latch and Comparator Features . . . . 4-4

Data Latch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Comparators 1 and 2 . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Other Module Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Example of Using the 1734-SSI Module

with a 24-bit SSI Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Chapter 5

About This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Use the Indicators for Troubleshooting . . . . . . . . . . . . . . . 5-1

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Table of Contents 2

Configure Modules in RSLogix 5000 Software

Index

Appendix A

About This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Understand Data, Connection, and Communication Formats A-1

Configure Your Module. . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Use the Help Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Work with the Feedback Dialog . . . . . . . . . . . . . . . . . . . . A-3

Work with the Conversion Dialog . . . . . . . . . . . . . . . . . . . A-4

Work with the Input Registration Dialog . . . . . . . . . . . . . . A-6

Work with the Watch Position Dialog . . . . . . . . . . . . . . . . A-7

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Preface

Purpose of This Manual

Who Should Use This Manual

Read this manual for information about how to install, configure, and troubleshoot your module.

For This Information See

Install the Module Chapter 1 Configure the Module Chapter 2 Communicate with Your Module Chapter 3 Operate Your Module Chapter 4 Diagnose Problems Chapter 5 Configure Modules in RSLogix 5000 Appendix A

You must be able to use RSNetWorx software or similar co nfiguration software to set up and calibrate these modules. You must have the capability to download and use electronic data sheet files.

In this manual, we assume you know how to do perform these tasks. If you do not, refer to your software user manuals or online help before attempting to use these modules.

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2 Preface

Install the Module

Chapter

About This Chapter

About the Module

Read this chapter to learn about how to install, wire, and remove the 1734-SSI module.

The 1734-SSI module collects serial data from industrial absolute-position encoding sensors that use a standard SSI protocol.

odule Locking Mechanism

Insertable I/O Module

Module Wiring Diagram

Module

Status

Network

Status

NODE:

24VDC

Source

Mechanical Keying

(Orange)

DIN Rail Locking Screw

Output

Slide-in Writable Label

1734

OB4E

(Orange)

RTB Removing Handle

Removable Terminal Block (RT

Interlocking Side Pieces

Mounting Base

43122

Insert the module into a POINT I/O terminal base that provides common power, communication, and wiring connections for the SSI sensors. Use this Series C module with the following.

• ControlNet adapter with RSLogix 5000 software, version 11 or later

• DeviceNet adapter

• EtherNet/IP adapter

with RSLogix 5000 software, version 11 or later

• PROFIBUS adapter

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1-2 Install the Module

Install the Mounting Base

The wiring base assembly (1734-TB or 1734-TBS) consists of a mounting base (1734-MB) and a removable terminal block (1734-RTB or 1734-RTBS). You can install the assembly, or just the mounting base. To install the mounting base/wiring base assembly on the DIN rail, proceed as follows.

ATTENTION

POINT I/O is grounded through the DIN rail to chassis ground. Use zinc-plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail material (such as aluminum and plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding.

Secure DIN rail to mounting surface approximately every 200 mm (7.8 in.).

1. Position the mounting base/wiring base assembly vertically above the installed units (adapter, power supply, or existing module).

2. Slide the mounting base down, allowing the interlocki ng side pieces to engage the adjacent module or adapter.

Slide the mounting base to allow the interlocking side pieces to engage the adjacent module or adapter.

31586

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Install the Module 1-3

3. Press firmly to seat the mounting base on the DIN rail, noting that the mounting base snaps into place.

Module Status

Network Status

NODE:

24VDC Source Output

1734 OB4E

44013

4. To remove the mounting base from the DIN rail, remove any installed module (and any module immediately to the right), and use a small-bladed screwdriver to rotate the DIN rail locking screw to a vertical position.

Install a Module

This releases the locking mechanism.

5. Lift straight up to remove the mounting base.

6. Repeat this procedure for the next mounting base assembly.

Install the module before or after base installation. Make sure that the mounting base is correctly keyed before installing the module into the mounting base. In addition, make sure the mounting base locking screw is horizontal referenced to the base.

WARNING

When you insert or remove the module while backplane power is on, an electrical arc can occur. This could cause an explosion in hazardous l ocation installations.

Be sure that power is removed or the area is nonhazardous before proceeding. Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector. W orn contacts may create electrical resistance that can affect module operation.

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1-4 Install the Module

1. Using a bladed screwdriver, rotate the keyswitch on the mounting base clockwise till the number requi red for the type of module being installed aligns with the notch in the base.

1734-SSI - Position 2

T urn the keyswitch to alig n the number with the notch.

Notch

(Position 3 Shown)

44009

2. Make sure the DIN-rail locking screw is in the horizontal position, noting that you cannot insert the module if the locking mechanism is unlocked.

Make sure the DIN-rail locking screw is in the horizontal position.

44101

3. Insert the module straight down into the mounting base and press to secure, locking the module into pl ace .

Module

Status

Network

Status

NODE:

24VDC

Source

Output

1734

OB4E

44012

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Install the Module 1-5

Install the Removable Terminal Block

A removable terminal block comes with your mounting base assembly.

To remove, pull up on the RTB handle. This lets you remove and replace the base as necessary without removing any of the wiring.

To reinsert the removable terminal block, proceed as follows.

WARNING

When you connect or disconnect the removable terminal block (RTB) with field-side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations.

Be sure that power is removed or the area is nonhazardous before proceeding.

1. Insert the RTB end opposite the handle into the base unit, noting that the end has a curved section that engages with the mounting base.

44011

Hook the RTB end into the mounting base end, and rotate until it locks into place.

2. Rotate the terminal block into the mounting base until it locks itself in place.

3. If an I/O module is installed, snap the RTB handle into place on the module.

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1-6 Install the Module

Remove a Mounting Base

To remove a mounting base, you must remove any installed module, and remove the removable terminal block (if wired).

1. Unlatch the RTB handle on the I/O module.

2. Pull on the RTB handle to remove the removable terminal block.

WARNING

When you connect or disconnect the removable terminal block (RTB) with field-side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations.

Be sure that power is removed or the area is nonhazardous before proceeding.

3. Press in on the module lock on the top of the module, and pull up on the I/O module to remove from the base.

4. Remove the module to the right of the base you are removing.

The interlocking portion of the base sits under the adjacent module.

WARNING

When you insert or remove the module while backplane power is on, an electrical arc can occur. This could cause an explosion in hazardous location installations.

Be sure that power is removed or the area is nonhazardous before proceeding. Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector . W orn contacts may create electrical resistance that can affect module operation.

5. Use a small-bladed screwdriver to rotate the orange DIN-rail locking screw on the mounting base to a vertical position, releasing the locking mechanism.

6. Lift the mounting base straight up to remove.

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Install the Module 1-7

Wire the Module

Read this section for information about wiring the module.

WARNING

If you connect or disconnect wiring while the field-side power is on, an electrical arc can occur. This could cause an explosion in hazardous l ocation installations. Be sure that power is removed or the area is nonhazardous before proceeding.

Run

Up Down Comp

D+

Module Status

Network Status

NODE:

RUN

UP DOWN

COMP

1734

SSI

D-

Module Status

Network Status

V+

Shield

C+

V-

I1 C-

43123

D = Data I1 = Digital Sourcing Input 1 C = Clock V = SSI Sensor

D+

D-

V+

C+

V-

C-

43124

Shield

D = Data I1 = Digital Sourcing Input 1 C = Clock V = SSI Sensor

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1-8 Install the Module

Module Terminations

0D+ 1D-

2V+ 3V4 Shield 5I1 6C+ 7C-

1 D and C are RS422-type

differential pairs.

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