esrs-encoder signal reference simulator

ESRS – Encoder Signal Reference Simulator(Cat. No. 4100-ESRS)

Installation and Setup Manual

Important User Information Because of the variety of uses for the products described in this publication, those responsible for the application and use of this control equipment 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.

The illustrations, charts, sample programs and layout examples shown in this guide are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Allen-Bradley 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 Allen-Bradley 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 manual we use notes to make you aware of safety considerations:

Attention statements help you to:

• identify a hazard

• avoid a hazard

• recognize the consequences

Allen-Bradley is a trademark of Rockwell Automation

ATTENTION

!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.

European Communities (EC) Directive Compliance

If this product has the CE mark it is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.

EMC Directive

This product is tested to meet the Council Directive 89/336/EC Electromagnetic Compatibility (EMC) by applying the following standards, in whole or in part, documented in a technical construction file:

• EN 50081-2 EMC — Generic Emission Standard, Part 2 — Industrial Environment

• EN 50082-2 EMC — Generic Immunity Standard, Part 2 — Industrial Environment

This product is intended for use in an industrial environment.

Low Voltage Directive

This product is tested to meet Council Directive 73/23/EEC Low Voltage, by applying the safety requirements of EN 61131-2 Programmable Controllers, Part 2 - Equipment Requirements and Tests. For specific information required by EN 61131-2, see the appropriate sections in this publication, as well as the Allen-Bradley publication Industrial Automation Wiring and Grounding Guidelines For Noise Immunity, publication 1770-4.1.

This equipment is classified as open equipment and must be mounted in an enclosure during operation to provide safety protection.

Table of Contents

Preface Using This Manual

Read This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1Who Should Use this Manual. . . . . . . . . . . . . . . . . . . . . . . P-1Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-2

Contents of this Manual . . . . . . . . . . . . . . . . . . . . . . . . P-3Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . P-3

Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-3Common Techniques Used in this Manual . . . . . . . . . . . . . P-4Product Receiving & Storage Responsibility . . . . . . . . . . . . P-4Allen-Bradley Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-5

Local Product Support . . . . . . . . . . . . . . . . . . . . . . . . . P-5Technical Product Assistance . . . . . . . . . . . . . . . . . . . . P-5

On the Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-6

Chapter 1 Overview

ESRS Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Principal features of the ESRS . . . . . . . . . . . . . . . . . . . . 1-1

ESRS Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2ESRS Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3ESRS Principal Specifications . . . . . . . . . . . . . . . . . . . . . . . 1-4

Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . 1-4Environmental Specifications . . . . . . . . . . . . . . . . . . . . 1-4

Power Supply and Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4Power Supply Specifications. . . . . . . . . . . . . . . . . . . . . 1-4Quadrature Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5Index Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5I/O Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Chapter 2 Installation

Mounting the ESRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Enable Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2External Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

i Publication 4100-IN505A-EN-P - October 2000

ii

Chapter 3 Operation

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Line Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1When Set To Unidirectional. . . . . . . . . . . . . . . . . . . . 3-1When Set To Bi-directional . . . . . . . . . . . . . . . . . . . . 3-2

Acceleration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Rounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Line Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Line Speed Ref Out . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Strobe Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Ext Line Speed In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4P1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Enable Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Enable Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Direction Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

P2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6Options Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Setting the Option Switch. . . . . . . . . . . . . . . . . . . . . . . 3-7Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7Index Division Ratio Selection . . . . . . . . . . . . . . . . . . 3-8Maximum Effective Motor Speed . . . . . . . . . . . . . . . . 3-8

Index

Publication 4100-IN505A-EN-P - October 2000

Preface

Read This Manual Read and understand this instruction manual. It provides the necessary information to let you install, connect, and set up the Encoder Signal Reference Simulator for safe, reliable operation. This preface covers the following topics:

• Who should use this manual

• The purpose of this manual

• Terminology

• Common techniques used in this manual

• Allen-Bradley support

Who Should Use this Manual

You should read this manual if you are responsible for the installation or set up of the Encoder Signal Reference Simulator.

If you do not have a basic understanding of the products listed below, contact your local Allen-Bradley representative for information on available training courses before using this product.

• S Class Compact motion controller

• 1394 GMC System module

Purpose of this Manual This manual is an installation and set up guide for the Encoder Signal Reference Simulator. It describes the procedures necessary to properly install and configure it into your motion control system.

1 Publication 4100-IN505A-EN-P - October 2000

Preface P-2

Safety Precautions The following general precautions apply to the Encoder Signal Reference Simulator:

ATTENTION

!Electric shock can kill. Make sure the Encoder Signal Reference Simulator is safely installed in accordance with the Installation and Set-up chapters of this manual. Avoid contact with electrical wires and cabling while power is on. Only trained service personnel should open the electrical cabinet.

This product contains stored energy devices. To avoid hazard of electrical shock, verify that all voltage on the capacitors has been discharged before attempting to service, repair, or remove this unit. You should only attempt the procedures in this manual if you are qualified to do so and familiar with solid-state control equipment and the safety procedures in publication NFPA 70E and BS-EN60204.

The system integrator is responsible for local safety and electrical codes.

ATTENTION

!An incorrectly applied or installed product can result in component damage or a reduction in product life. Wiring or application errors, such as undersizing or inadequate DC supply, or excessive ambient temperatures can result in a malfunction.

The Encoder Signal Reference Simulator contains ESD (Electrostatic Discharge) sensitive parts and assemblies. Static control precautions are required when installing, testing, servicing, or repairing this assembly. Component damage can result if ESD control procedures are not followed. If you are not familiar with static control procedures, refer to Allen-Bradley publication 8000-4.5.2, Guarding Against Electrostatic Damage or any other applicable ESD Protection Handbook.


Preface P-3

Contents of this Manual

Related Documentation

The following documents contain additional information concerning related Allen-Bradley products. To obtain a copy, contact your local Allen-Bradley office or distributor.

Terminology In order to avoid confusion, we have used the following general terms in a specific manner within this manual. We define them as follows:

ESRS - Refers to the Encoder Signal Reference Simulator.

Chapter Title ContentsPreface Describes the purpose, background, and scope

of this manual. Also specifies the audience for whom this manual is intended.

1 Overview Provides a general description of the Encoder Signal Reference Simulator, its features and mechanical specifications.

2 Installation Provides the steps needed to successfully mount and wire the Encoder Signal Reference Simulator.

3 Operation Provides information on using the ESRS.

For Read This Document Document NumberInstructions for installation and set-up for the 1394 GMC system

1394 Digital, AC, Multi-Axis Motion Control System User Manual

1394-5.0

Instructions for installation and set-up for the S Class Compact motion controller

IMC S Class Compact Motion Controller Installation and Set-up Manual

999-122

Instructions for using the Ultra Plus 1398 Ultra Plus User Manual 1398-5.1An article on wire sizes and types for grounding electrical equipment (North American standards)

National Electrical Code Published by the National Fire Protection Association of Boston, MA.

An article on wire sizes and types for grounding electrical equipment (European standards).

BS-EN 60204 Electrical Equipment of Machines

Published by British Standards Institute

A complete listing of current Allen-Bradley documentation, including ordering instructions. Also indicates whether the documents are available on CD-ROM or in multi-languages

Allen-Bradley Publication Index SD499

A glossary of industrial automation terms and abbreviations Allen-Bradley Industrial Automation Glossary AG-7.1


Preface P-4

For specific definitions of other terms used in industrial automation, see the Allen-Bradley Industrial Automation Glossary (publication number AG-7.1).

Common Techniques Used in this Manual

The following conventions are used throughout this manual:

• Bulleted lists such as this one provide information, not procedural steps.

• Numbered lists provide sequential steps or hierarchical information.

• When we refer you to another location, the section name appears in italics.

• The exclamation point inside of a triangle, followed by the word “ATTENTION” indicate circumstances that can lead to personal injury, death, property damage or economic loss. See example below.

• An important table indicates critical information. See the following example.

Product Receiving & Storage Responsibility

You, the customer, are responsible for thoroughly inspecting the equipment before accepting the shipment from the freight company. Check the item(s) you receive against your purchase order. If any items are obviously damaged, it is your responsibility to refuse delivery until the freight agent has noted the damage on the freight bill. Should you discover any concealed damage during unpacking, you are responsible for notifying the freight agent. Leave the shipping container intact and request that the freight agent make a visual inspection of the equipment.

ATTENTION

!Failure to observe these warnings may cause damage to the unit, unexpected and/or uncontrolled movement of peripheral equipment, and your health and safety.

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


Preface P-5

Leave the product in its shipping container prior to installation. If you are not going to use the equipment for a period of time, store it:

• in a clean, dry location

• within an ambient temperature range of 0 to 85° C (32 to 185° F)

• within a relative humidity range of 5% to 95%, non-condensing

• in an area where it cannot be exposed to a corrosive atmosphere

• in a non-construction area

Allen-Bradley Support Allen-Bradley offers support services worldwide, with over 75 Sales/Support Offices, 512 authorized Distributors and 260 authorized Systems Integrators located throughout the United States alone, plus Allen-Bradley representatives in every major country in the world.

Local Product Support

Contact your local Allen-Bradley representative for:

• sales and order support

• product technical training

• warranty support

• support service agreements

Technical Product Assistance

If you need to contact Allen-Bradley for technical assistance, please review the information in this manual first. Then call your local Allen-Bradley representative. For the quickest possible response, we recommend that you have the catalog numbers of your products available when you call. See the Related Documentation section of this chapter for the publication numbers of other manuals that can help with this product.


Preface P-6

The Rockwell Automation Technical Support numbers are:

in Europe: (+44) 1270 580142

in North America (603) 443-5419

On the Web For information about Allen-Bradley, visit the following World Wide Web site:

http://www.ab.com/


Chapter 1

Overview

ESRS Description The Encoder Signal Reference Simulator (ESRS) generates a digital speed reference for a motor and encoder feedback combination. In practice the ESRS would be connected to the Master Encoder input of a drive. The ESRS then generates quadrature pulses with selectable index (i.e. marker) which a drive forces its motor/encoder to follow.

The ESRS operates in either unidirectional or bi-directional mode as selected by the Options switch located on the printed circuit board (PCB) of the ESRS. The rounding and acceleration functions are operational in all modes and for all inputs including STOP.

Principal features of the ESRS

• Selectable Internal and External Line Reference inputs plus Stop.

• Separate Enable input, with status indication, allows for remote control.

• Rate of acceleration and deceleration continuously variable between 1.5 and 15 seconds.

• Five positions of rounding plus “OFF”.

• Powered with a single +5V or +12V DC input voltage taken from either the drive’s Encoder connector or external power supply.

• User selectable Index pulse in the range 210, 211, 212, 213 counts.

• Motor speed selectable in the range 1875 to 15000 RPM.

• Product housed in a rugged steel box with mounting tabs.

• Operates in Unidirectional and Bi-directional mode.

• Separate square wave “STROBE” output, which is synchronized with the Index pulse, for triggering stroboscopes, oscilloscopes, and so forth.

• Analog output indication of commanded speed.


1-2 Overview

• Digital output indicates phase of quadrature pulse train (i.e. direction of motor rotation).

ESRS Front Panel The following illustration shows the placement and labelling of major items on the ESRS front panel.

Figure 1.1 ESRS Front Panel Layout


Overview 1-3

ESRS Footprint The following figure shows the footprint of the ESRS with fixing hole dimensions and drilling details.

Figure 1.2 ESRS Dimensions


1-4 Overview

ESRS Principal Specifications

Mechanical Specifications

Environmental Specifications

Power Supply and Fuses Power Supply Specifications

Table 1.A Mechanical Specifications

Enclosure Type Steel case with integral mounting feet on rear edge.

Enclosure Size English (inch)11.6 x 13.5 x 1.7

Metric (mm)295 x 343 x 43

Table 1.B Environmental Specifications

Operating Storage

Temperature 0 to 60oC -40 to 70oC

Humidity 95% non condensing @ 60oC

Table 1.C Power Specifications

Input Voltage +5 or +12V DC. Both ± 5%

Current Draw Approximately 0.6A DC

Overcurrent Protection Overcurrent protection is provided by separate +5V (F102) and +12V (F103) PCB mounted fuses rated at T1.6A. A spare fuse (F101) is also provided on the PCB.

If +5V and +12V are applied simultaneously, the ESRS selects the +12V input.

The ESRS is intended to take its power from the encoder supply of the target equipment. However, the user should establish that this supply has sufficient capacity to provide the current indicated above. If necessary, an additional power supply is required – see Chapter 2: Installation.


Overview 1-5

Quadrature Output

Index Pulse

I/O Filtering

Table 1.D Quadrature Output

Number of quadrature outputs provided. One

Output format Incremental quadrature with Index pulse.

Output data type RS422 TTL Levels.

Quadrature output frequency 0 to 275kHz.

Quadrature output phase Forward is defined as A phase leading B.

Reverse is defined as B phase leading A.

Table 1.E Index Pulse

Index division ratios. Selectable in the range : 210, 211, 212, 213 pulses.

Index pulse type Gated

The index pulse is high (Logic 1 or True) only when the selected division ratio has been satisfied and the A and B phases are High.

Table 1.F I/O Filtering

High Frequency Filtering. High Frequency filtering is provided on all power, digital and analog I/O lines as appropriate.

Over-Voltage Clamping Over-voltage clamping is provided on the power supply inputs, the quadrature and index outputs, and the “EXT LINE SPEED IN” input.


1-6 Overview


Chapter 2

Installation

The ESRS is designed to be mounted in an electrical cabinet via the mounting tabs on its back panel. For all applications, this installation method should be observed. Before powering up your ESRS, make sure it has been configured correctly and that all peripheral equipment has been correctly connected to it.

The following safety points must be observed when installing the unit:

• The 5V or 12V DC supply must be electrically isolated from all other supplies with higher potentials.

• The 0V (common) side of the 24V DC supply must be connected to a safety ground.

• The unit is intended for installation and use within an electrical control cabinet in a normal industrial environment.

• When used in an electrical cabinet, the case of the ESRS must be bonded to the cabinet via the mounting feet.

ATTENTION

!Do not apply power to your ESRS when it is part of a control system without first establishing that this will not have any adverse effects.

Do not make or break any electrical connections to your ESRS while power is applied.

Do not change any option switch settings on your ESRS while power is applied.

Failure to observe the above warnings may cause immediate and uncontrolled movement of controlled hardware, damage to the ESRS, peripheral equipment, and your health and safety.


2-2 Installation

Mounting the ESRS The ESRS must be properly grounded to the metal enclosure panel. The following diagram shows how to ground the ESRS to the panel.

Figure 2.1 Mounting and Grounding Diagram

Enable Input There are several ways in which the Enable Input can be wired. The diagrams on the following pages indicate the various connection options.

The following diagram shows how to connect the ESRS to continually enable the device from the internal Enable supply.


Installation 2-3

Figure 2.2 ESRS Continually Enabled – Power Supplied by the ESRS


2-4 Installation

The next diagram shows how to connect the ESRS to enable the device from a source provided by the users equipment.

Figure 2.3 ESRS Enabled – Power Supplied by Users Equipment


Installation 2-5

This figure shows how to connect the ESRS to enable the device from its internal Enable supply and control with volt free contacts.

Figure 2.4 ESRS Enabled via Volt Free Contacts – Power Supplied by ESRS


2-6 Installation

This diagram shows how to connect the ESRS to enable the device from a source provided by your equipment and control the Enable with volt free contacts.

Figure 2.5 ESRS Enabled via Volt Free Contacts – Power Supplied by Users Equipment

External Power Supply The following diagrams indicate how an external power supply should be connected to the ESRS in cases where the encoder supply in the target equipment has insufficient capacity to drive it. The


Installation 2-7

recommended minimum current capacity for the external power supply is 1 Amp.

This diagram shows how to connect the ESRS to a power supply adjacent to the ESRS.

Figure 2.6 External Power Supply Adjacent to Encoder

ATTENTION

!The ESRS does not contain reverse supply polarity protection. You must observe polarity when installing the unit. Reverse supply polarity can permanently damage the ESRS.


2-8 Installation

The next diagram shows the ESRS connected to a power supply adjacent to the drive or controller.

Figure 2.7 External Power Supply Adjacent to Drive/Controller


Chapter 3

Operation

General Your ESRS is fitted with a range of indicators and controls to allow easy configuration and use. This chapter explains the function and operation of these and provides additional technical data where appropriate.

Indicators There are two green LED indicators provided on the ESRS front panel: OK and Enable.

The OK indicator relates the status of the applied power (either +5V DC or +12V DC) and associated fuse. When the LED is lit, it indicates that power is applied and the fuse is healthy.

The Enable indicator relates the status of the Enable input. When it is lit, the Enable input is active and the ESRS is enabled.

Controls The ESRS provides controls for Line Speed, Acceleration, Rounding, and Line Selection.

Line Speed

The Line Speed control of the ESRS allows the user to set the desired line speed from the ESRS. The control is a 270 degree potentiometer accessible from the front panel of the ESRS. For tamper avoidance, the control is screwdriver operated. The function of this control is dependent on whether the Option Switch is set to Unidirectional or Bi-directional.

When Set To Unidirectional

When Unidirectional Mode is selected, zero speed occurs in the MIN position and maximum speed occurs in the MAX position. The direction of rotation in this mode is set by the Options switch.


3-2 Operation

When Set To Bi-directional

When Bi-directional Mode is selected, zero speed occurs at the center of rotation. Maximum reverse speed occurs in the MIN position and maximum forward speed occurs in the MAX position.

Acceleration

The Acceleration control allows the user to set the rate of motor acceleration. It is a 270 degree potentiometer accessible from the front panel of the ESRS. For tamper avoidance, it is screwdriver operated.

Minimum acceleration occurs in the MIN position and maximum acceleration occurs in the MAX position. The acceleration is continuously variable between these limits.

When the rounding switch in the OFF position, the motor accelerates/decelerates linearly at the rate set by the ACCEL control. For any particular setting, the acceleration and deceleration rates are equal.

Rounding

The Rounding control lets you round off the acceleration at the start and end points. The Rounding control is a 6 position rotary switch with a knob mounted on the front panel of the ESRS.

No rounding is applied in the OFF position. Minimum rounding occurs at the next CW position and the maximum rounding is applied in the MAX position. Within the selected range, the amount of rounding applied is proportional to the rate of acceleration.

Line Selection

This 3 position toggle switch lets you select whether to use an internal line, an external line or stop.

INT – Positioning the toggle switch at INT selects the line speed control mounted in the ESRS.

STOP – Toggling to the STOP position removes all line references and forces the motor to stop when the acceleration and rounding settings allow. The STOP position overrides the Enable input and stops the motor even when the Enable input is active.


Operation 3-3

EXT – This setting selects a customer supplied line speed input via the EXT LINE SPEED IN input.

Inputs and Outputs The following analog and digital inputs and outputs are provided.

Line Speed Ref Out

The ESRS provides an analog indication of commanded speed after rounding and acceleration have been applied. The analog output range is 0V > Vout > 10V.

The output produces a voltage ranging from 0 to +10 V DC as the commanded speed varies from stationary to the selected maximum. Within the speed range selected, the output voltage is directly proportional to speed.

In Bi-directional Mode, this output produces +10V DC at maximum speed for both directions of rotation. The direction of rotation is then defined by the quadrature pulse phase via the Phase Output.

The impedance of this output is approximately 300Ω. Therefore to ensure low interface errors, any device connected to this output should have an input resistance of greater than 30kΩ.

Strobe Out

The Strobe Out is a TTL Digital Output providing a buffered signal to trigger stroboscopes, oscilloscopes, and so forth.

This output provides a TTL square wave whose rising edge is synchronized to the rising edge of the Index pulse.


3-4 Operation

The Strobe Out is a square wave. Its falling edge is centered between the consecutive rising edges of the Index Pulse.

Figure 3.1 ESRS Strobe and Index Pulses

Ext Line Speed In

This is an analog input requiring a DC voltage within the range of -10V > Vin > +10V. You can set the commanded speed from an analog voltage within this range. Within the selected range, the motor speed is directly proportional to input voltage.

In Unidirectional mode, zero speed occurs at 0V input voltage and maximum speed occurs at +10V DC input voltage. The direction of rotation in this mode is set by the Options switch.

In Bi-directional mode, zero speed occurs at 0V DC input voltage. Maximum reverse speed occurs at -10V DC input voltage and maximum forward speed occurs at +10V DC input voltage.

When the ESRS is set to EXT, the LINE SPEED control has no function.

The input resistance of this input is 100kΩ. Therefore the output resistance of the device driving this input should be 1kΩ or less to avoid interface errors.

Input clamping at ±15V is provided at this input. The input current is not limited by the ESRS when clamping occurs.

Acceleration and rounding are operational in this mode.

P1

The P1 connector is a 2 part 6 way mating screw that lets you make the connection to the Enable Voltage Input and Output and the Direction Output.


Operation 3-5

The following table shows the Pin number and its signal name.

Enable Voltage

This provides a current limited supply to power the Enable input.

Enable Input

This input, which is opto-isolated, allows control of the ESRS via an applied voltage in the range of 5 to 24V DC. The Enable voltage can be applied with either polarity (AC voltages cannot be used). Voltage must be applied to the Enable Input to make the chosen line reference available. Removing the Enable voltage has the same effect as selecting STOP on the SELECTION switch.

In situations where it is required to control the ESRS via volt free contacts, the Enable voltage provided can be routed through these to the Enable Input.

In cases where you supply the Enable voltage, the current required to drive this input can be determined by calculating:

IENABLE = (VENABLE - 1.5) / 4700

Direction Output

This digital output indicates the phase of the quadrature pulse train. The switched element is a relay with contact rating of 24V DC at 0.5 A. The following table defines the functionality of the Direction Output.

Table 3.A P1 Pin Functions

Pin Number Signal Name1 Enable Voltage, +15V2 Enable Voltage, 0V3 Enable Input4 Enable Input5 Direction Input6 Direction Output, 0V

Table 3.B Output Direction Values

Direction Output Quad. Pulse PhaseON A leads BOFF B leads A


3-6 Operation

P2

The P2 connector is a 15 way male high density D connector. It allows you to make connection to the quadrature pulse train and index plus power (+5 and +12V DC).

The following table shows the Pin Number and the matching Signal name.

The A+ and A-, B+ and B-, I+ and I- outputs are RS422 TTL level outputs. These outputs are intended to be connected to bi-directional line receivers in the target equipment. If single ended outputs are required A+, B+, and I+ outputs can be used and A-, B-, and I- are left unconnected.

Options Switch The Options Switch is a 10 lever DIP switch mounted on the printed circuit board (PCB). Use this switch to set the various configurations options. With the box mounted vertically, the switch is positioned on the horizontal. Each of the 10 levers is numbered from left to right with 1 being to the extreme left and 10 being to the extreme right. A switch is in the ON position when the upper portion of the lever is depressed. It is in the OFF position when the lower portion of the lever is depressed.

Table 3.C P2 Pin Functions

Pin Number Signal Name1 A+2 A-3 B+4 B-5 I+ (Z+)6 Common7 Common8 +12V DC9 +5V DC10 I- (Z-)11 Not Used12 Not Used13 Not Used14 +5V DC15 Shield


Operation 3-7

Setting the Option Switch

You must remove the side panel of the ESRS box to gain access to the DIP switches.

Set the DIP switches by pressing the appropriate lever to either its ON or OFF position based on the following switch setting values.

When configuring the ESRS with the DIP switches, some of the settings are cumulative. These setting combinations determine the actual configuration. Make sure all of the levers are in the correct position for the desired configuration.

Mode Selection

DIP switch levers 1 and 2 determine the operating mode of the ESRS.

Switch 1 – ON = Unidirectional; OFF = Bi-directional.

Switch 2 – ON = Unidirectional Mode - Forward; OFF = Unidirectional Mode - Reverse.

ATTENTION

!Removal of the side panel and setting of DIP switches should be performed by authorized personnel only. Proper safety precautions must be followed to reduce the risk of damage to the unit, other equipment, and health of personnel.

TIP When Switch 1 is in the OFF position, for Bi-directional Mode, Switch 2 has no effect.


3-8 Operation

Index Division Ratio Selection

Switch 3 and Switch 4 are used to create 4 patterns based on their ON/OFF combinations. The patterns determine the pulse ranges, the pulses per revolution, and the counts per revolution.

Maximum Effective Motor Speed

The Maximum Effective Motor Speed is dependent on the combined values for Switch 3 and Switch 4. Only one of the switches numbered 5 through 10 should be in the ON position. The default setting has Switch 5 in the ON position with switches 6 through 10 in their OFF positions.

Table 3.D Index Division Ratio Selection

Switch Settings forSwitch 3/ Switch 4

PulseRange

Pulses PerRevolution

Counts perRevolution

OFF/OFF 210 1024 4096

ON/OFF 211 2048 8192

OFF/ON 212 4096 16384

ON/ON 213 8192 32768

TIP Having more than one switch, in series 5 through 10, set to the ON position results in an undefined maximum RPM speed. No switches, in series 5 through 10, set to the ON position results in an output speed of zero. In either case, no damage is done to the ESRS.

Table 3.E Maximum Effective Motor Speed (RPM) Selection

SwitchNumber

Switch 3 and 4 set to: OFF/OFF

Switch 3 and 4 set to: ON/OFF

Switch 3 and 4 set to: OFF/ON

Switch 3 and 4 set to: ON/ON

5 1500 750 375 1876 3000 1500 750 3757 6000 3000 1500 7508 9000 4500 2250 11259 12000 6000 3000 150010 15000 7500 3750 1875


Index

AAllen-Bradley Support P-5

CCommon Techniques P-4Connecting

external power supply 2-6External Power Supply Adjacent to Drive/Controller 2-8External Power Supply Adjacent to Encoder 2-7

Contents of this Manual P-3Continually 2-3Controls 3-1

Acceleration 3-2Line Selection 3-2Line Speed 3-1

When Set To Bi-directional 3-2When Set To Unidirectional 3-1

Rounding 3-2

EEnable Input 2-2Enabled Output

Continually Enabled 2-3ESRS Enabled 2-4ESRS Enabled via Volt Free Contacts 2-5ESRS Enabled via Volt Free Contacts – Power Supplied by

Users Equipment 2-6ESRS Description 1-1ESRS Dimensions 1-3ESRS Front Panel Layout 1-2External Power Supply 2-6

FFront Panel 1-2

IInputs and Outputs 3-3

Ext Line Speed In 3-4Line Speed Ref Out 3-3P1 3-4P2 3-6Strobe Out 3-3

Strobe and Index Pulses 3-4Installation 2-1

Mounting and Grounding 2-2safety points 2-1

wiringEnable Input 2-2

LLED

Enable indicator 3-1OK indicator 3-1

LED indicators 3-1

OOperation 3-1Options Switch 3-6

Setting 3-7Index Division Ratio 3-8Maximum Effective Motor Speed 3-8Mode Selection 3-7

PP1 3-4

Direction Output 3-5Enable Input 3-5Enable Voltage 3-5

P1 connector 3-4P2 connector 3-6Principal features 1-1Product Receiving P-4Purpose of this Manual P-1

RRead This Manual P-1Related Documentation P-3

SSafety Precautions P-2Specifications 1-4

Environmental 1-4I/O Filtering 1-5Index Pulse 1-5Mechanical 1-4Power Supply 1-4Quadrature Output 1-5

Storage Responsibility P-4Support

Allen-Bradley, P-5local product, P-5


I-2 Index

technical product assistance, P-5support

On the Web P-6

TTerminology P-3

WWho Should Use this Manual P-1World Wide Web site P-6


Publication 4100-IN505A-EN-P - October 2000 1 PN 4100-IN505ASupersedes Publication 4100-5.5 - November 1998 © 2000 Rockwell International Corporation. Printed in the U.S.A.

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