Control Techniques Focus 3R User manual

Page i

Focus 3R

¼ to 5HP Single Phase

Bi-Directional

Regenerative DC Drive

Page ii

General Information

The manufacturer accepts no liability for, negligent or incorrect installation or adjustment

of the optional operating parameters of the equipment or from mismatching the variable

speed drive with the motor.

The contents of this User Guide are believed to be correct at the time of printing. In the

interests of a commitment to a policy of continuous development and improvement, the

manufacturer reserves the right to change the specifications of the product or its

performance, or the contents of the User Guide, without notice.

form or by any means, electrical or mechanical, without permission in writing from

Control Techniques.

Page iii

Customer Support

Control Techniques

359 Lang Boulevard, Building B

Grand Island, New York 14072

U.S.A. Telephone: (716) 774-1193

It is Control Techniques’ goal to ensure your greatest possible satisfaction with the

operation of our products. We are dedicated to providing fast, friendly, and accurate

assistance. That is why we offer you so many ways to get the support you need.

Whether it’s by phone, fax or modem, you can access Control Techniques support

information 24 hours a day, seven days a week. Our wide range of services include:

Fax (716) 774-8327

You can FAX questions and comments to Control Techniques Just send a FAX to the

number listed above.

Website and Email www.emersonct.com

Website: www.emersonct.com

Email: [email protected]

If you have Internet capabilities, you also have access to technical support using our

website. The website includes technical notes, frequently asked questions, release

notes and other technical documentation. This direct technical support connection lets

you request assistance and exchange software files electronically.

Technical Support (716) 774-1193 or (800) 893-2321

Email: [email protected]

Control Techniques’ products are backed by a team of professionals who will service

your installation. Our technical support center in Grand Island New York is ready to help

you solve those occasional problems over the telephone. Our technical support center

is available 24 hours a day for emergency service to help speed any problem solving.

Also, all hardware replacement parts, if needed, are available through our customer

service organization.

When you call, please be prepared to provide the following information:

The type of controller or product you are using

What you were doing when the problem occurred

How you tried to solve the problem

Need on-site help? Control Techniques provides service, in most cases, the next day.

Just call Control Techniques’ technical support center when on-site service or

maintenance is required.

Customer Service (716) 774-1193 or (800) 367-8067

Email: [email protected]

Authorized Control Techniques distributors may place orders directly with our Customer

Service department. Contact the Customer Service department at this number for the

distributor nearest you.

Page iv

“Warning” indicates a potentially hazardous situation that, if

not avoided, could result in death or serious injury.

“Caution” indicates a potentially hazardous situation that, if

not avoided, may result in minor or moderate injury.

“Caution” used without the safety alert symbol indicates a

potentially hazardous situation that, if not avoided, may result in property

damage.

Page v

Safety Considerations

Safety Precautions

This product is intended for professional incorporation into a complete system. If

you install the product incorrectly, it may present a safety hazard. The product

and system may use high voltages and currents, carry a high level of stored

electrical energy, or are used to control mechanical equipment that can cause

injury.

You should give close attention to the electrical installation and system design to

avoid hazards either in normal operation or in the event of equipment

malfunction. System design, installation, commissioning and maintenance must

be carried out by personnel who have the necessary training and experience.

Read and follow this safety information and instruction manual carefully.

Enclosure

This product is intended to be mounted in an enclosure that prevents access

except by trained and authorized personnel and prevents the ingress of

contamination. This product is designed for use in an environment classified as

pollution degree 2 in accordance with IEC664-1. This means that only dry, non-

conducting contamination is acceptable.

Setup, Commissioning and Maintenance

It is essential that you give careful consideration to changes to drive settings.

Depending on the application, a change could have an impact on safety. You

must take appropriate precautions against inadvertent changes or tampering.

Restoring default parameters in certain applications may cause unpredictable or

hazardous operation.

Safety of Machinery

Within the European Union all machinery in which this product is used must

comply with Directive 89/392/EEC, Safety of Machinery.

The product has been designed and tested to a high standard, and failures are

very unlikely. However the level of integrity offered by the product’s control

function – for example stop/ start, forward/reverse and maximum speed – is not

sufficient for use in safety-critical applications without additional independent

channels of protection. All applications where malfunction could cause injury or

loss of life must be subject to a risk assessment, and further protection must be

provided where needed.

Page vi

General warning

Failure to follow safe installation guidelines can cause death or serious injury. The

voltages used in this unit can cause severe electric shock and/or burns, and could be

lethal. Extreme care is necessary at all times when working with or adjacent to this

equipment. The installation must comply with all relevant safety legislation in the country

of use.

AC supply isolation device

The AC supply must be removed from the drive using an approved isolation device or

disconnect before any servicing work is performed, other than adjustments to the

settings or parameters specified in the manual. The drive contains capacitors, which

remain charged to a potentially lethal voltage after the supply has been removed.

Grounding (Earthing, equipotential bonding)

The drive must be grounded by a conductor sufficient to carry all possible fault current

in the event of a fault. The ground connections shown in the manual must be followed.

Fuses

Fuses or over-current protection must be provided at the input in accordance with the

instructions in the manual.

Isolation of control circuits

The installer must ensure that the external control circuits are isolated from human

contact by at least one layer of insulation rated for use at the applied AC supply voltage.

Page 2

Table of Contents

Topic Page

Introduction 4

Motor Compatibility 5

Basic Control Modes/Feedback 6

Armature Voltage Feedback 6

Speed or Tach Feedback 6

Quick Stops 6

Receiving, Inspection, Storing 7

Performance Features 8

Nameplate Information 9

Nameplate Location 9

Catalog Number Definition 9

Specifications

Ratings Table 10

Performance Specifications 11

Operating Conditions 11

Internal Adjustments (Potentiometer) 11

Customer Selections (Jumpers) 11

Operator Functions 12

Control Circuit Specifications 12

Options 12

Dimensions 13-14

Option Kits & Descriptions 15-19

Customer Connections & Start-Up

Start-Up Guidelines 20

Incoming Power Requirements 21

Grounding 21

Motor Wiring 21-22

When viewing this document electronically, the Table of Content items

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Page 3

Table of Contents

Topic Page

Power Wiring 23-24

Control Wiring 25-32

Speed Pot Wiring 33

Customer Selections

Jumper Programming 34-38

Current Ranges 35

Current/Torque Control 35

LED Status Indicators 39

Potentiometer Adjustments 40-46

Basic Adjustments 41-42

Tuning Adjustments 43-44

Interconnect Drawings

Functional Block Diagram 48

Non-Regen Circuit Overview 49

Start-up Guide Worksheet 50-52

Initial Start-Up & Basic Test Setups 53

Installation of Option Kits 53

Motor Test 54-56

Trouble Shooting Guide 56-59

Light Bulb Test 61-62

Retrofitting Focus 3 to Focus 2 Applications 63-65

Application Notes 66

Tachometer Follower Application 67-68

Spare Parts 70

When viewing this document electronically, the Table of Content items

are active and will direct you to that topic by clicking on that item.

Page 4

Introduction

This is the User’s Guide for Focus 3R (Regenerative) series of DC Drives. The Focus 3 is

a 3rd generation product of the long-standing Focus series. The Focus 1 was introduced back

in 1980 and the Focus 2 later in 1982. The Focus 2 was retired when the Focus 3 was

introduced as it took advantage of many technological advances in power electronics. The

Focus 3 Regen is a single-phase, bi-directional analog drive for DC motors with power ranges

from ¼ to 5HP.

Your Focus 3R is a general purpose regenerative DC motor speed controller that is

powered from either 115Vac or 230Vac single phase power. A regenerative (four quadrant)

drive is one that can provide motoring and regenerating torque for acceleration and deceleration

to overcome rated loads. There are a great many applications where regenerative drives

provide the most economical solution. A regenerative drive can slow down a motor faster than

the motors normal coasting rate and can stop overhauling load situations.

Both drives incorporate many features that are standard on high performance system

drives, such as dynamic stability and built-in signal follower adjustments. Focus 3 drives come

in two basic model variations- with and without enclosure.

Chassis Model

The model without an enclosure is denoted as a chassis model.

The chassis model is intended for mounting within a User

supplied cabinet and where the User intends to provide remote

Start/Stop and Speed control signals. (5 Hp model shown)

Enclosed Model

The Enclosed version comes to you already in a NEMA 4/12

enclosure that would allow the User to mount the Focus on a wall

or machine surface. The Enclosed version has Start/Stop and the

Speed Control adjustment on the front cover for convenient

operation.

For a complete overview of the Focus 3 product

line and available options, visit our website at:

www.emersonct.com or click the link below:

Focus 3 Catalog Section

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