Control Techniques Focus 3R User Manual

Focus 3R

¼ to 5HP Single Phase

Bi-Directional

Regenerative DC Drive

Page i

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.

Page ii

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: info@emersonct.com

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: pdtechsupport@emersonct.com

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: customer.service@emersonct.com

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 iii

“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 iv

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, nonconducting 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 v

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 vi

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

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Page 2

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

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Page 3

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

Page 4

Motor Compatibility

The Focus 3 was designed to run standard 90 Vdc or 180 Vdc Shunt Wound or Permanent Magnet DC motors in both directions. The Focus 3 can run motors with other characteristics (such as Universal motors) but one must review those requirements to insure compatibility. Universal motors have commutator brushes but typically plug into the AC power line. Universal motors are often used in tools such as Drills, Saws, Shop VAC’s, Routers, etc and typically cannot be run in reverse.

Shunt Wound Motors that are controlled by single phase DC drives typically have 4 power wires. Two of these are the Armature leads typically designated A1 & A2 or A+ & A-. The other two power wires are the shunt field leads and typically designated F1 & F2 or F+ & F-. The Focus 3 can supply up to 1 Amp for shunt field excitation (field current requirements beyond 1A may damage field rectifier diodes). If your motor does not have Field Current information on the nameplate, you can determine compatibility by measuring your motors Field resistance using a calibrated ohmmeter.

Motors with:

90v Armatures typically require 100 Vdc for field excitation. In these cases, the Focus

3 requires 120vac input power and must be internally set for this input level. The motor Field resistance should not be less than 100 ohms when cold.

180v Armatures typically require 200 Vdc for field excitation. In these cases, the Focus 3 requires 240vac input power and must be internally set for this input level. The motor Field resistance should not be less than 200ohms when cold.

The motor nameplate information is key to determining compatibility. As seen below, the motor below easily falls in the range of the Focus 1 operated from a 240vac supply. The drive will supply 180v for the armature and 200v for the field ( this motor indicates there are 2 field windings and for 200vdc they must be wired in series ). The field current requirement is 0.28A which is well under the 1A maximum.

1 1750 / 2050 180

5.0 SHUNT

0.28/.22 518

FLD VOLTS 200/100

240v Armatures typically require 150 Vdc for field excitation. In these cases, the Focus

3 requires 240vac input power and must be internally set for this input level. The motor field resistance should not be less than 150 ohms when cold and will require a series resistor to drop the additional field supply voltage. Consult Control Techniques Technical Support for additional information.

Page 5

Motors with:

Permanent Magnet Motors typically have only 2 power wires. These are the Armature

leads and typically designated A1 and A2 or A+ and A-.

Armature Voltage

Armature Current

Page 6

Speed Control

Armature Voltage Feedback

The Focus 3 can vary the speed of the motors mentioned above as a function of the Speed potentiometer setting (or external speed command signal) by simply varying the output Armature voltage (field excitation if used typically remains constant). A great many motor applications do not require ultra precise speed control. Because of this, the Focus 3 is factory set for Armature Voltage Feedback. Armature Voltage Feedback (or simply Armature Feedback) does not require any special motor mounted speed feedback device and is therefore inherently quite reliable and is capable of providing up to 1% speed regulation.

Speed Feedback- Tachometer

Should more precise speed control be required, the Focus 3 can accommodate those motors equipped with DC Tachometers (AC tachometers require an option kit). DC tachometers output a linear voltage proportional to their RPM and can provide the Focus 3 with accurate motor speed feedback information. With good DC tachometers up to

0.5% speed accuracy can be achieved.

Tach failure will typically result in motor speed runaway. One who designs

systems with Speed Feedback devices such as DC tachometers should be

cognizant of this fault condition and must take machine design precautions

should this event occur.

We would recommend that all DC Drives be initially run using Armature Voltage Feedback to verify operation even if Tach Feedback is the ultimate goal.

Quick Stops

The DB option provides a rather quick stopping action and provides motor turning resistance when the drive is not in the RUN condition. The Focus 3R can be outfitted with a Dynamic Braking resistor should this requirement be desired.

Regenerative drives are capable of stopping the motor more quickly than dynamic braking by rapidly reducing the speed command to zero and then disabling the drive. This requires the drive to be active and some external means of disabling the drive after the motor reaches zero speed.

Power Outages

Shunt Wound Motors

Should a power outage occur, the drive would turn off and the motor would coast to rest. If a Dynamic Braking resistor were employed there would typically be enough decaying field strength to enable some faster stopping action.

Permanent Magnet Motors

Should a power outage occur, the drive would turn off and the motor would coast to rest. If a Dynamic Braking resistor were employed, full Dynamic Braking force would be exerted because the field is maintained by the motors internal permanent magnets. Therefore, there would be motor turning resistance during power outages as well.

Note: DB Resistors require Contactor Option - See Options

Page 7

General Information

Introduction

The purpose of this manual is to provide the user with the information needed to install, start-up, and maintain the Focus 3 drive. This instruction manual should be read in its entirety, paying special attention to the warning and caution notices, before installation and before performing any start-up or drive maintenance.

Receiving

The user is responsible for inspecting the equipment thoroughly before accepting the shipment from the freight company. Check the items received against the purchase order. If any items are obviously damaged, do not accept delivery until the damage has been noted on the freight paperwork.

Inspection

Before installation and start-up of the drive, inspect the unit for mechanical integrity (i.e. loose parts, wires, etc). If physical damage was sustained during shipment, leave the shipping container intact and notify the freight agent. After unpacking, check the drive nameplate catalog number against the purchase order.

Storing

Store the drive in its shipping container prior to installation. If the drive isn’t used for a period of time, store according to the following instructions in order to maintain warranty coverage:

Clean, dry location

Ambient Temperature Range: -400C to 700C

: -400F to 1600F

Humidity: 95%, Non-condensing

Improper procedures can result in personal injury or equipment damage. Only qualified electrical maintenance technicians familiar with electronic drives and thei standard safety precautions should be permitted to install, start-up, or maintain this apparatus.

Page 8

PERFORMANCE FEATURES

• Solid State Full Wave Power Bridge -Uses generously rated power semiconductors for Maximum reliability and long life.

• Four Quadrant Operation – The drive is capable of running in both the directions and

providing full braking torque in both directions.

• Control Circuit Isolation – The control circuitry is isolated from the drives power section

allowing signal common to be connected to earth ground or process signals referenced to earth ground.

• Inner Current Loop Regulator - Inherent high bandwidth capability for fast response.

• Semiconductor Fusing - Both AC lines fused for maximum protection in case of short

circuit.

• AC Line Filter and Transient Voltage Suppressor Network - Eliminates interaction

between other drives or AC equipment.

• Current Limit Ranges - Selectable current limit ranges to match the drive to the motor

being used. Provides smooth acceleration of high inertia loads.

• Speed Regulator - 1 % accuracy armature voltage feedback with IR compensation or 0.5 %

accuracy with DC tachometer feedback. Regulation accuracy may be affected by the tachometer selected.

• Current (Torque) Regulator -

2% accuracy armature current regulator allows the user to control motor torque instead of speed.

• Circuit Board Indicators - Light emitting diodes (LEDs) on the control board indicate when

the drive is in Run Mode or the Current Limit is enabled.

• Remote Current Limit - Available by the simple addition of a potentiometer.

• Current Signal Follower lnput** - Allows the motor speed to be controlled by a current

signal from a commercially available transducer. The signal may be one of the following:

0 -5mA or 0-20mA

• Voltage Signal Follower lnput - Allows the motor speed to be controlled by a voltage

signal from a DC tachometer generator or a process voltage signal. It accepts an input with a range of 0-200 Vdc.

• Auto/Manual Operation - Standard circuitry allows the drive to be controlled by the

operator speed potentiometer or by the current/voltage signal inputs.

• UL/cUL - All Focus 3 Drives are UL/cUL listed.

** Note: The Current Signal Follower Input on the Focus 3 Regenerative Drives is designed for 0

to 5 or 0 to 20 ma, not 1 to 5 or 4 to 20 ma. The circuitry can be adjusted to bias out the 1 or 4 milliamp current levels and the drive will follow the signals correctly. The difference is that if the current input drops below the 1 or 5 ma level, the drive will rotate in the reverse direction ( as much as 25% speed if the signal goes to zero). If a 1 to 5 or 4 to 20 ma signal is required on a Focus 3 Regenerative Drives, it is recommended that the Focus 3 Signal Isolator board (F3NSBD) be used since it has circuitry built in to block the reverse speed signal.

Page 9

The Focus 3 comes in two basic model variations- with and without enclosure.

Chassis Model

Enclosed Model

Nameplate Information

Enclosed Unit

Model #

Model Number Definition

F3 N 2 C

Part #

Serial #

Enclosure

Chassis (C) Enclosed (E)

Max HP Rating @240vac

2 HP (2) 5 HP (5)

Always record the drive Model Number, Part Number and Serial Number for future warranty situations and spare parts. A good location to record these is on the Start-up

Guide Worksheet on page #49.

Page 10

Non-Regen (N) Regen (R)

Drive Family

Focus 3 (F3)

Chassis Models

Enclosed Models

F3R2C

F3R2E

F3R5E

F3R5C

Specifications

Ratings

Input

Catalog Enclosure HP 1Ø Max

Part #

F3R2C Chassis ¼ -1

½-2

F3R2E NEMA 4/12 ¼ -1

½-2 F3R5C Chassis 3-5 240 35 180 25 200 1 F3R5E NEMA 4/12 3-5 240 35 180 25 200 1

Volts Amps Volts Amps Volts Amps

120 240 120 240

14 14 14 14

Armature

DC Output

180

Armature Field Field

10 10 10 10

100 200 100 200

1 1 1 1

Page 11

Page 12

PERFORMANCE SPECIFICATIONS

Service Factor 1.0 Speed Regulation (95% Load Change): Armature Voltage 1% of Max. Speed with IR Compensation All other variables

(voltage regulated) 15% of Base Speed Tachometer Feedback (DC) 0. 5% of Base Speed Speed Range: 30:1 Efficiency: Control Only 98% Drive System (motor and control) 86% typically

DRIVE OPERATING CONDITIONS

Altitude (without derating) 3300Ft ( 1000meters ) Ambient Temperature:

Chassis Models 0-550C ( 32-130° F ) Enclosed (NEMA 4/12) 0-400C ( 32-104° F )

INTERNAL ADJUSTMENTS (POTENTIOMETERS)

Potentiometer Function Range

Maximum Speed 80-120% of Rated Speed Minimum Speed 0-30% of Maximum Speed IR Compensation 0-20% of Rated Voltage Current Limit 0-150% of Selected Range Acceleration Time 0.3-20 seconds (linear) Deceleration Time 0.3-20 seconds (linear) Jog Speed 0-30% of Full Speed command Speed Loop Offset Adjustable Velocity Loop Stability Adjustable Current Loop Stability Adjustable Current Signal Follower Gain Adjustable Velocity Signal Follower Gain Adjustable Signal Follower Zero Bias Adjustable

CUSTOMER SELECTIONS (JUMPERS)

Function Range

Input Voltage 120/240Vac Control Mode Speed / Torque Current Feedback range High / Medium / Low / Xlow Current Limit Pot Selector Local / Remote Armature Voltage level 90 Vdc/180 Vdc Optional “M” Contactor Yes/No Tachometer Feedback High/Low Speed Feedback Selector Armature / Tachometer Line Frequency 50/ 60Hz

Page 13

OPERATOR FUNCTIONS

Chassis Enclosed

Speed Adjustment (Speed Pot) Standard Standard Start/Stop Customer Supplied Standard Auto/Manual Optional Optional Run/Jog Optional Optional Fwd/Rev Optional Optional

CONTROL CIRCUIT SPECIFICATIONS

Logic Control Power 24 Vdc

Speed Potentiometer 5000 ohms

Input Signal Requirement 10 Vdc @ 0.5mA

Control Circuit Isolation Standard with regen F3R models

Current Signal Follower (see note, page 8) 0-5mA or 0 - 20mA

Voltage Signal Follower 10 – 200 Vdc (at Maximum Speed)

FOCUS 3 OPTIONS

CATALOG NUMBER DESCRIPTION

F3SE Enclosure Small (2HP), NEMA 4/12 F3LE Kits Large (5HP), NEMA 4/12

F3M112 “M” ¼ - 1HP @ 120V F3M224 Contactor ½ - 2HP @ 240V F3M524 Kits 3 - 5HP @ 240V F3DB224 ½ HP @ 120V, 2HP @ 240V F3DB1524 ¼ - 1/3 HP @ 120V, I .5HP @ 240V

F3DB124 Dynamic ¾ -1HP @ 240V F3DB0524 Braking ½ HP @ 240V F3DB112 Kits ¾ -1HP @ 120V F3DB324 3HP @ 240V F3DB524 5HP @ 240V

F3TS Toggle Switch, NEMA 4 /12 F3NSBD Signal Isolation Board 2450-9024 Remote Percent Speed Meter Kit 2450-9021 Remote RPM Speed Meter Kit 2950-9066 Remote Operator Station ( 3 Function ) 2950-9068 Remote Operator Station ( 5 Function ) 6160-9001 Ten-Turn Precision Potentiometer

Page 14

Focus 3 Chassis Dimensions

Chassis

Suitable for mounting in a user’s enclosure where internal temperatures will not exceed 550C or 1300F.

TB2

SMALL REGEN

NON-REGEN

MOUNTING

9.75" 9.35"

JP11

3.30"

AC1 AC2

0.25"

13.00"

12.00"

B B

LAL

0.168" (4 PLACES)

F3R2C

6.36"

6.75"

TB2

LARGE REGEN &

NON-REGEN

MOUNTING

TB1

C C

JP11

4.50"

AC2 G2

0.13"

8.88"

9.50"

0.312" (4 PLACES)

F3R5C

Page 15

Focus 3 Enclosed Dimensions

NEMA 4/12

Suitable for most well ventilated factory areas where industrial equipment is installed. Locations subject to steam vapors, oil vapors, flammable or combustible vapors, chemical fumes, and corrosive gases or liquids should be avoided unless an appropriate enclosure has been supplied. Ambient temperature is not to exceed 400C.

5.93

9.35

4.63

12.00

6.36

8.88

0.168 Dia (4 Places)

6.91

0.51

6.13

F3R2E

3.70

9.50

2.102.22

1.05

0.13

1.05

Page 16

Ø0.31

F3R5E

Focus 3 Option Kits

Focus 3 Enclosure Option – F3SE (small) up to 2HP

F3LE (large) 3-5HP

This kit provides the flexibility of stocking only Chassis drives and adding the enclosure when required. It reduces the number of stocked items to 6 (four chassis drives and two covers) as opposed to eight (fou enclosed drives and four chassis drives). It includes the speed adjustment potentiometer and the start/stop switch pre-wired to a plug-on terminal strip and all seals to provide a NEMA 4/12-enclosure rating.

Focus 3 Contactor Kit – P/N F3M112 (1 HP,120vac)

P/N F3M224 (2 HP, 240vac)

This Kit includes a magnetic contactor that can be mounted either in the Focus 3 enclosed unit or on the chassis mount unit. It provides a positive disconnect o the motor armature when the controller is stopped, preventing motor rotation in the event of SCR mis-fire due to line noise. This kit may also be required by local and/or National Electrical Codes. This kit also includes the DB (dynamic braking) poles, an auxiliary normally open contact and all connection wires.

Focus 3 Contactor Kit– P/N F3M524 (3-5 HP, 240vac)

Page 17

Focus 3 Option Kits

AC Input HP (Typical) Part Number

120 Vac

240 Vac

Focus 3 Dynamic Braking Kit PN– See Table Below

For use with Focus 3 Contactor Kits. Dynamic braking provides rapid motor stopping by quickly dissipating the stored energy in the rotating moto and load. These resistors have been sized in accordance with Nema specifications for dynamic braking.

“Providing 3 stops in rapid succession with the load inertia equal to the motor inertia, then cooling forever.”

Note: Large and small dynamic braking resistors shown, ¼-2 HP use small and the 3-5 HP use the large resistor.

1/4-1/3

1/2

3/4-1

1/2

3/4-1

1.5 2 3 5

F3DB1524

F3DB224 F3DB112

F3DB0524

F3DB224

F3DB1524

F3DB224 F3DB324 F3DB524

Page 18

Focus 3 Toggle Switch – P/N F3TS

This kit can be mounted in the drive enclosure cove or remote mounted when used with chassis drives. The kit includes the switch, NEMA 4/12 switch boot and the connection wires for enclosure use. It is used to provide one of the following functions: Fwd/Rev, Run/Jog, or Auto/Manual. Up to 3 o these kits may be used with the Drive cover.

Focus 3 Option Kits

Signal Isolator Board – P/N F3NSBD

This option is used in applications where isolation is required between an external control signal and the motor controller (which may or may not be at earth ground potential). It can be utilized to isolate a variety of voltage or current signals (see specifications below). It may also be used simply to isolate the speed adjustment pot, and the pot power supply is included. This option can be mounted in the enclosure or in a piece of plastic track (included with kit).

Specifications:

Input Power: 17- 30 Vdc @ 50mA Max. (for control circuitry)

Control Relay (CRR): 24 Vdc @ 12.1 mA (JP5 = 24 Vdc)

120 Vac @ 20 mA (JP5 = 120 Vac) Contact Type/Rating – 2 Form A / 1A @ 250 Vac

Isolation Voltage: 240 Vac Power Systems

2000 Vac Hi-Pot for 1 Minute

Inputs:

Voltage Ranges: 5,12,26,52,98 & 208 Vdc, 180 Ohms/volt

Current Ranges: 0-5 mA, 1-5 mA, 910 Ohms input impedance

0-20 mA, 4-20 mA, 250 Ohms input impedance

Speed Pot: 5Kohms, 2W (Includes +10 Vdc power supply for potentiometer)

Output: 0 to +10 Vdc (Uni-polar)

Application Note:

Although the Focus 3 Regenerative drives are isolated, this board is useful in applications requiring control with a 4-20 milliamp speed reference since the drive was designed for a 0-20 milliamp signal. It also adds an additional layer or isolation. In addition, the adjustments on this board are multi-turn adjustment potentiometers providing much finer adjustments than the ones on the drive.

Page 19

Focus Family Options

Speed

Remote Operator Station – P/N 2950-9068 /2950-9066

Speed

Run Jog

Auto Man

Start

Stop

100 100

Start

Stop

100

These NEMA 1 operator stations can be used to remotely control Focus 1 and Focus 3 Motor Controllers. Two models are available as shown. Both units include a Speed Potentiometer, a green normally open start button and a red normally closed stop button. The 2450-9068 also includes two two- position switches with two contacts, 1 normally open, 1 normally closed.

Remote Percent Meters – P/N See Accessories Catalog

This meter may be used to remotely display the motor speed in percent of maximum speed. Included is a calibration board. It is available in left zero (unidirectional applications) or 0-center (bidirectional applications) Meters supplied loose for customer mounting.

P/N Meter P/N Calibration board

M1 Meter 0 - 100 C1 Cal+/-10vdc M2 Meter 0 - 150 C2 Cal-90vdc M3 Meter 100 –0 -100 C3 Cal-180vdc M4 Meter 150 –0 -150

Ten-Turn Precision Speed Potentiometer – P/N 6160-9001

This is a multi-turn speed potentiometer. It provides a vernie scale for precise and repeatable speed setting. A locking tab is provided to prevent in advertent speed changes. It may be mounted in either of the Focus 1 and Focus 3 enclosures or the Remote Operator Station described above.

Page 20

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Control Techniques Focus 3R User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual