FOR PRECISION MOTION TECHNOLOGY - … · ... Duff-Norton has the right solution to meet ... I0:1...

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CONTROL SYSTEMS SOLUTIONS FOR PRECISION MOTION TECHNOLOGY 9415 Pioneer Ave. • Charlotte, NC 28273 Phone: (704) 588-4610 • (800) 477-5002 Fax: (704) 588-1994 Email: [email protected] www.duffnorton.com © 2018 Duff-Norton, Inc., Columbus McKinnon Engineered Products. All Rights Reserved. 135 YEARS OF POSITIONING & PROCESS SOLUTIONS PB-CNTL-01 01/18 Since 1883, Duff-Norton has been at the forefront of precision motion technology. Providing a continued commitment to leading edge manufacturing and highest quality engineered products for the most advanced industrial lifting, positioning and transfer needs for our customers worldwide. Motion technology today is expected to lift, move and precisely position heavy loads, often under extreme or adverse conditions. Whether it’s creating motion to twist and pivot, open and close or keeping a production line moving, Duff-Norton has the right solution to meet the demand. Our systems can be found in industries ranging from aluminum, steel, agriculture, pharmaceutical, material handling, energy, food and beverage, and automated machinery. I S O 9 0 0 1 : 2 0 1 5 1 0 0 0 0 6 7 7 Q M 1 5 D u f f - N o r t o n ® Your First Choice for Control Systems Solutions

Transcript of FOR PRECISION MOTION TECHNOLOGY - … · ... Duff-Norton has the right solution to meet ... I0:1...

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CONTROL SYSTEMS SOLUTIONS

F O R P R E C I S I O N M O T I O N T E C H N O L O G Y

9415 Pioneer Ave. • Charlotte, NC 28273Phone: (704) 588-4610 • (800) 477-5002 Fax: (704) 588-1994 Email: [email protected]

www.duffnorton.com

© 2018 Duff-Norton, Inc., Columbus McKinnon Engineered Products. All Rights Reserved.

135 YEARS OF POSITIONING & PROCESS SOLUTIONS

PB-CNTL-01 01/18

Since 1883, Duff-Norton has been at the forefront

of precision motion technology. Providing a continued

commitment to leading edge manufacturing and highest

quality engineered products for the most advanced

industrial lifting, positioning and transfer needs for our

customers worldwide.

Motion technology today is expected to lift, move and

precisely position heavy loads, often under extreme or

adverse conditions. Whether it’s creating motion to twist

and pivot, open and close or keeping a production line

moving, Duff-Norton has the right solution to meet the

demand.

Our systems can be found in industries ranging from

aluminum, steel, agriculture, pharmaceutical, material

handling, energy, food and beverage, and automated

machinery.

ISO

9001:2015 10000677 Q

M15

Duff-Norton ®

Your First Choicefor Control Systems Solutions

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DUFF-NORTON CONTROLS . . . . . . . 4

FeaTUReS aND BeNeFiTS . . . . . . . . 5

CUSTOM CONTROLS . . . . . . . . . . . . . . . 6

SYNCHRONiZaTiON CONTROLS . . . . . . 7

VaRiaBLe SPeeD CONTROLS . . . . . . . . 8

POSiTiONiNG CONTROLS . . . . . . . . . . . 9

PeNDaNT CONTROLS . . . . . . . . . . . . . 10

DiGiTaL DiSPLaY CONTROLS . . . . . . . . 11

THRee PHaSe JOG CONTROLS . . . . .12

SiNGLe PHaSe JOG CONTROLS . . . . . 13

OPTiONaL aCCeSSORieS . . . . . . . . . . 14

CONTROL COMPaRiSON CHaRTS . . . . 14

TERmS OF SALE . . . . . . . . . . . . . .15

NOTE

Duff-Norton has made every effort to ensure that the information contained in the publication is accurate and reliable. Determining the suitability of our products for specific applications is the user’s responsibility.

WARNINGThe equipment shown in this catalog is intended for industrial use only and should not be used to lift, support, or otherwise transport people unless you have written statement from Duff-Norton which authorizes the specific actuator used in your applications as suitable for moving people.

TABLE OF CONTENTS

DUFF-NORTONCONTROL SYSTEMS

FOR PRECISION MOTION TECHNOLOGY

DUFF-NORTONCONTROL SYSTEMS

Whether you need a custom

turn-key solution, a standalone,

or an integration into a legacy

system our automated motion

control solutions bring together

the products and technology that

improve your processes and move

you into the future through each

stage of production.

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DUFF-NORTONCONTROL SYSTEMS FEATURES AND BENEFITS

DUFF-NORTONCONTROL SYSTEMS

Electric control systems support a wide range of applicationsDuff-Norton engineers a wide range of controls systems, and can provide turn-key solutions for applications

ranging from jogging controls to complex automated systems. We offer systems from fractional horsepower

sizes up to 200 HP.

■■ Synchronization controls

■■ Positioning controls

■■ PLCs

■■ HMis

■■ VFDs

■■ Safety relays

■■ PLC

■■ HMi

BeNeFiTS

iNDUSTRY eXPeRTiSe

STaNDaRD HaRDWaRe

STaNDaRD SOFTWaRe PROGRaMMiNG

STaNDaRD FeaTUReS

■■ all Duff-Norton controls are designed to meet UL508a

■■ NeMa enclosures provided for all applications

■■ Labeled terminal strip for ease of field connections

■■ Motor overload protection

■■ Short circuit protection for all control voltages

■■ external Main Disconnect Switch (MDS)

■■ all wires labeled for quick troubleshooting

■■ electrical schematics provided for all applications

■■ Fewer interfaces

■■ Better performance

■■ One integrated system

■■ Turn-key solutions

■■ Reduced downtime

■■ increased productivity

■■ Variable speed controls

■■ Jog Controls

■■ encoders

■■ Motor overloads

■■ Linear sensors

■■ Contactors

■■ VFD

■■ SERVO

Why use Duff Norton Controls?We are linear motion experts. We

know our linear motion products

better than anyone and understand

the challenges you face – navigating

a dynamic marketplace that demands

innovative technologies and the agility

to contend with a greater need for

increased productivity.

Our industrial experience combined

with the latest controls technologies

and our broad assortment of linear

motion products make us the ideal

partner to work closely with you to

design and implement your system

solutions.

We know how to get the highest

performance out of our linear motion

products. Through our control solutions

we can meet the most advanced

industrial lifting, positioning, and transfer

demands needed to help you gain a

competitive advantage in the global

marketplace.

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Synchronization Controls Synchronization controls provide smooth, reliable

synchronization of multiple axis of motion. We

offer a variety of solutions for synchronizing from

two to six axis of motion. Our synchronization

packages are designed with reliability and

safety in mind. Most importantly, to hold the

tolerances for your specific application.

SYNCHRONIZATION CONTROLS

DUFF-NORTONCONTROL SYSTEMS

MeTHODS

FeeDBaCK

OPTiONSSynchronization Control Methods■■ Motor starters with motor overload protection

■■ Variable Frequency Drives (VFDs)

■■ Servo motors with absolute encoders

Synchronization Control Feedback Options■■ incremental encoders

■■ absolute encoders

■■ Potentiometers

■■ Linear transducers

Synchronization Control Options■■ Line reactors/filters for longer motor cable lengths

■■ 4 - 12 inch color touch screens (HMi)

■■ Pendant controls

■■ Live positioning display

■■ Strobe/stack light for motion

■■ additional e-Stops

■■ UL or cUL certifications

MCR FAULT

OUTPUTS INPUTS

SAFETY RELAY LIMITS OK

Local Message Display

DRIVE READY

O0:0 POWER LIGHTO0:1 MCR POWERO0:2 RUN FORWARDO0:3 RUN REVERSEO0:4 SPAREO0:5 DRIVE FREQ 1O0:6 DRIVE FREQ 2O0:7 DRIVE ENABLEO0:8 RELEASE BRAKEO0:9 SPAREO0:10 SPAREO0:11 SPARE

I0:0 ENCODER CH AI0:1 ENCODER CH BI0:2 SPAREI0:3 SPAREI0:4 E-STOP ACTIVEI0:5 MCR IS ONI0:6 DRIVE READYI0:7 DRIVE FAULTI0:8 SPAREI0:9 SPAREI0:10 SPAREI0:11 SPAREI0:12 BRAKE RELEASEDI0:13 SPAREI0:14 SPAREI0:15 SPAREI0:16 SPAREI0:17 SPAREI0:18 EXTEND LIMITI0:19 RETRACT LIMIT

I/O SCREEN150 T

MAIN MANUAL FAULT INFO

Custom Controls Duff-Norton realizes no two applications

are the same. We work closely with

you to understand your application

and provide the best possible solution.

Control packages can be highly

customized to meet your needs.

We offer a wide variety of options to

meet demanding control requirements.

Package options can easily be

implemented to best fit your application

and provide you with complete turn-key

solutions.

CUSTOM CONTROLS

DUFF-NORTONCONTROL SYSTEMS

Local Message Display

PEDESTAL

RAISEPEDESTAL 2

15 HZ

40 HZ

50 HZ

60 HZ

15 HZ

40 HZ

50 HZ

60 HZ

LOWERPEDESTAL 2

RAISESOUTH SIDE

LOWERSOUTH SIDE

RAISEAFT SIDE

LOWERAFT SIDE

RAISENORTH SIDE

LOWERNORTH SIDE

RAISEFORWARD SIDE

LOWERFORWARD SIDE

RAISEPEDESTAL 1

LOWERPEDESTAL 1

15 HZ

40 HZ

50 HZ

60 HZ

RAISEPEDESTAL 4

LOWERPEDESTAL 4

MANUAL SCREEN 2

MENU SCREEN 2

RAISEPEDESTAL 3

RAISEPEDESTALS

LOWERPEDESTALS

15 HZ

40 HZ

50 HZ

60 HZLOWER

PEDESTAL 3

1 - FORWARD LEFT

2 - FORWARD RIGHT

3 - AFT RIGHT

4 - AFT LEFT

N.NNN

N.NNN

N.NNN

N.NNN

NNNNN

NNNNN

NNNNN

NNNNN

POSITION LOAD

MANUAL SCREEN 1

■■ Multiple axis of motion

■■ aC or DC controls

■■ Load sensing

■■ Servo applications

FeaTUReS & BeNeFiTS OPTiONSAdditional Custom Control Options

■■ Stack lights

■■ HMi pendants

■■ Programming ports

■■ Quick disconnects

■■ enclosure heaters

■■ explosion proof enclosures

■■ Remote pushbutton stations

■■ Motor cables

■■ Feedback cables

■■ Console enclosures

■■ NeMa type 4/4x enclosures

■■ LeD indicators

UL, cUL Requirementsa large majortity of our control panels can be

made available with UL or cUL certifications.

MET

LISTED

US

Complies withUL 508AE212326

SN160ENCLOSED INDUSTRIAL CONTROL PANEL

No. A 06621181

®C UL US LISTEDMET

LISTED

US

Complies withUL 508AE212326

SN160ENCLOSED INDUSTRIAL CONTROL PANEL

No. A 06621181

®C UL US LISTED

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Variable Speed Controls Many applications require a variation of

speeds during the motion process. Our

Variable Speed Controller allows the

speed pot to be adjusted between 0%

and 100%, even while the application

is in motion. We offer preset, select-

able speed controls with a choice of

three different speeds (25%, 50% and

100%). if custom speeds are desired,

they can be easily entered into a nu-

meric keypad as a percentage ranging

from 0 to 100%. You have a choice of

a pushbutton controller or color touch

screen operator for your application.

Standard VFD Synchronization Enclosure Dimensions

HP HEIGHT WIDTH DEPTH

1/2

42 in30 in 8 in

3/4 - 1

1-1/2

2

3

5

48 in7-1/236 in 10 in

10

VARIABLE SPEED CONTROLS

CONTROLCOMPONENTS

BeNeFiTS OPTiONS

Variable Speed Control Advantages■■ allows greater flexibility for motion

applications

■■ Multiple processes can be achieved with the same equipment by adjusting speeds

■■ eliminates the need for additional equipment for fast or slow processes

■■ eliminates equipment hard starts and stops

■■ Prolongs equipment life

Variable Speed Controls Options■■ Door mounted Speed Pot adjustable from

0 to 100%.

■■ Preset, selectable speeds using a panel mounted selector switch

■■ Numeric entry speed using a HMi touch screen

■■ UL or cUL certifications

Positioning Control Positioning applications can be complicated

and time consuming. We offer an adaptable

range of options to precisely position single

or multiple axes of motion. Locations can be

easily entered with our numeric entry position

controls anywhere along a desired axis and

then activated with the Move-To pushbutton.

Duff-Norton’s versatile, programmable entry

position control allows up to five preset

positions. Positions can be programmed,

stored and changed at any time.

MCR FAULTSAFETY RELAY LIMITS OK DRIVE READY

CURRENT POSITION: INCH MMNNN.NN

NN.NN NN.NN NN.NN NN.NN NN.NN NN.NN

NNN.NN

Local Message Display

MOVE TOSETPOINT 1

MOVE TOSETPOINT 2

MOVE TOSETPOINT 3

MOVE TOSETPOINT 4

MOVE TOSETPOINT 5

MOVE TOPOSITION

STORE ASSETPOINT 1

STORE ASSETPOINT 2

STORE ASSETPOINT 3

STORE ASSETPOINT 4

STORE ASSETPOINT 5

MOVEPOSITION

MANUAL SCREEN 1

MANUAL I/O FAULT INFO AUTOSTOP

POSITIONING CONTROL

CONTROLCOMPONENTS

FEATURES MeTHODS

Standard Position Control Features■■ Panel mounted emergency stop

(e-Stop)

■■ Labeled terminal block for field connections

■■ Fused and shafted Main Disconnect Switch (MDS)

■■ Short circuit protection

■■ Color touch screen (HMi)

■■ NeMa type 12/13 wall mount

Position Control Methods■■ Numeric position entry

■■ Programmable entry positions

enclosure

■■ Two-channel safety relay

■■ Brake relay, if required

■■ illuminated POWeR ON indicator

■■ UL or cUL certifications

MET

LISTED

US

Complies withUL 508AE212326

SN160ENCLOSED INDUSTRIAL CONTROL PANEL

No. A 06621181

®C UL US LISTEDMET

LISTED

US

Complies withUL 508AE212326

SN160ENCLOSED INDUSTRIAL CONTROL PANEL

No. A 06621181

®C UL US LISTED

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Pendant Controls Duff-Norton pendant controls

provide ease of movement around

applications. We offer an option of

3, 5, 7, and 9 button pendants. each

pendant control comes standard with

an easily accessible emergency stop

(e-Stop) button on the pendant.

Customize your pendant with

selector switches, momentary

pushbuttons, indicators, and

nameplates to meet your application

need. Pendant controls are available

to control packages for jogging,

synchronization, positioning, and

variable speed uses.

PENDANT CONTROLS

CONTROLCOMPONENTS

Digital Display Controls Positioning applications are becoming

increasingly popular in today’s industry.

Duff-Norton controls provide easy-to-read, live,

positioning feedback and can be used with

encoder, linear transducer, or potentiometer

feedback. Scaling a linear application is easy

using the panel mounted pushbuttons on the

digital display.

DIGITAL DISPLAY CONTROLS

CONTROLCOMPONENTS

Additional Pendant Control Options■■ LOCaL/ReMOTe keyed switch

■■ illuminated e-Stop

■■ Customizable pendant cable lengths

■■ UL or cUL certifications

Five Button Control Pendant

Nine Button Control Pendant

Three Button Control Pendant

Digital Display Controls Features

Display Resolution

Input Types Power

0.001 inches• Potentiometer (0 - 10K OHM)• encoder• analog 4 - 20 Ma

aC and DC models available

BeNeFiTS OPTiONS

Standard Benefits of Digital Display Controls■■ Digital display controls can easily be “zeroed”

with the press of a single button

■■ Digital display controls offer live feedback for precise positioning

■■ Displays can be set up to display up to five decimal positions

■■ No need for excitation power supplies for potentiometer applications

■■ additional pull-up resistors are not required for encoder applications

Digital Display Controls Options■■ Multiple displays can be used

in the same control panel

■■ Optional outputs for indicators or alarms

■■ Displays can be provided for existing applications

■■ UL or cUL certifications

MET

LISTED

US

Complies withUL 508AE212326

SN160ENCLOSED INDUSTRIAL CONTROL PANEL

No. A 06621181

®C UL US LISTED

FEATURES OPTiONS

Standard Pendant Control Features■■ Three, five, seven, and nine button pendants

■■ emergency Stop (e-Stop) on pendant

Custom Pendant Control Features■■ Selector switches

■■ Momentary pushbuttons

■■ indicators

■■ Custom nameplates

MET

LISTED

US

Complies withUL 508AE212326

SN160ENCLOSED INDUSTRIAL CONTROL PANEL

No. A 06621181

®C UL US LISTED

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Three Phase Jog ControlDuff-Norton standard three phase

jogging motor controls provide simple

operation and reliable service. To start

motion simply press and hold the extend

or retract pushbutton. To stop motion

release either the extend or retract

pushbutton. Our three phase jogging

motor controls come standard with a

power on indicator to inform users that

the panel is under power. Standard three

phase jog panels include an auxiliary

brake relay if fast stopping is required.

Labeled terminal strips are included for

easy termination of end-of-travel limit

switches.

Single Phase Jog Control Duff-Norton offers single phase jogging control

panels that meet a wide variety of single phase

voltages. all of our control panels come standard

with short circuit protection devices as well as

adjustable motor overload protection.

SINGLE PHASE JOG CONTROL

CONTROLCOMPONENTSTHREE PHASE JOG CONTROL

CONTROLCOMPONENTS

FEATURES FEATURESOPTiONS OPTiONS

Standard Features for all Control Boxes■■ Twist-to-release, illuminated LeD

eMeRGeNCY STOP button

■■ Labeled terminal block for field connections

■■ Fused and shafted Main Disconnect Switch (MDS)

■■ Fused 120VaC transformer for control voltage

■■ NeMa type 12/13 wall mount enclosure

■■ interlocked reversing contactor

■■ adjustable motor overload

■■ Brake relay provided for fast braking applications

■■ illuminated POWeR ON indicator

■■ Momentary eXTeND/ReTRaCT pushbuttons

Standard Features for all Control Boxes■■ Twist-to-release illuminated LeD eMeRGeNCY

STOP button

■■ Labeled terminal block for field connections

■■ Door mounted Main Disconnect Switch (MDS)

■■ NeMa type 12/13 wall mount enclosure

■■ electrical/mechanical interlocked motor starters

■■ adjustable motor overload

■■ illuminated POWeR ON indicator

■■ Momentary eXTeND/ReTRaCT pushbuttons

Additional Feature Options■■ illuminated eXTeND/ReTRaCT

pushbuttons

■■ MOTOR OVeRLOaD indicator

■■ Pendant controls

■■ Strobe/stack light alarm

■■ Maintained operations

■■ 230/575V available

■■ UL or cUL certifications

Additional Feature Options■■ Shafted interlocked MDS

■■ illuminated eXTeND/ReTRaCT pushbuttons

■■ MOTOR OVeRLOaD indicator

■■ Pendant controls

■■ Strobe/stack light alarm

■■ Maintained operation

■■ UL or cUL certifications

Three Phase Jog Controls Specifications

Motor Sizes VoltageEnclosure

DimensionsEnclosure Mounting

Up to 10 HP 460 VaC/3 PH/60 Hz 20"H x 16"W x 6"D Wall Mount

Single Phase Jog Controls Specifications

Motor Sizes

VoltageEnclosure

DimensionsEnclosure Mounting

Up to 1.5 HP

110/115/120 VaC/1 PH/ 50/60 Hz220/230/240 VaC/1 PH/ 50/60 Hz

16"H x 14"W x 6"D Wall Mount

MET

LISTED

US

Complies withUL 508AE212326

SN160ENCLOSED INDUSTRIAL CONTROL PANEL

No. A 06621181

®C UL US LISTED

MET

LISTED

US

Complies withUL 508AE212326

SN160ENCLOSED INDUSTRIAL CONTROL PANEL

No. A 06621181

®C UL US LISTED

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OPTIONAL ACCESSORIES & COMPARISON CHARTS

CONTROLCOMPONENTS

Optional Controls Accessoriesat Duff-Norton our goal is to provide high quality, reliable control solutions that get your application up and

running fast. Our optional accessories include the following: motor cables, VFD cables, sensor cables and cord

grips. With minimal time and effort, you’ll have all the parts you need to install your new control system.

Comparison Charts

Black

BrownBlue

White

encoder Cable

Strain Relief

Cord Grip

encoder cables are available in four standard lengths 4, 10, 15, and 20 meters. ask about custom lengths.

OPTiONaL aCCeSSORieSControl Accessory Options■■ encoder cables

■■ Limit switch cable

■■ Potentiometer cable

■■ VFD cable

■■ Motor cable

■■ Linear transducer cable

■■ Cord Grips

■■ Strain reliefs

■■ Switches - mechanical/ electrical

Servo - Linear

Transducer

Control Type - Feedback Device

0.60

0.50

0.40

0.30

0.20

0.10

0.00

Positioning / Synchronization Accuracy By Control Type and Feedback Device

Servo -Absolute Encoder

VFD -Linear

Transducer

VFD - Encoder

VFD -Potentiometer

Contactors -Linear Sensor

Contactors -Encoder

Contactors - Potentiometer

0.01 0.013 0.015 0.017

0.25

0.3

0.5

0.32

Potentio-meter

Device

Positioning Device Accuracy

Encoder Servo Linear Sensor

Acc

urac

yA

ccur

acy

(Inch

)

Selector Switch

Variable Speed Device

Variable Speed Device Flexibility

Speed Pot

HMI Entry

Flex

ibili

ty

Motor Contactors

Motor Control Device

Synchronization Device Accuracy

VFDs Servo Motors

Acc

urac

y

Note: accuracy is dependent on speed and type of actuator. The above chart is a general guideline for accuracy.

GlossaryHMI – Human Machine Interface. Typically a 4 – 10 inch color touch screen used as a central point for system input. HMis reduce the need for

multiple pushbuttons, indicators, and selector switches. HMis are extremely versatile and completely customizable. HMis relay information

about a systems i/O, status, status of switches and sensors, as well as specific fault messages. HMis reduce setup time, troubleshooting,

maintenance, and down time.

VFD – Variable Frequency Drives. VFDs or inverters are used to vary the speed of an electric aC or DC motor. VFDs can use single phase or

three phase aC input voltage to drive three phase aC motors. VFDs are extremely beneficial in applications where synchronization, positioning,

or variable speed is required. VFDs can be programmed to ramp up, accelerate, or ramp damp, decelerate, over a specific period of time.

PLC – Programmable Logic Controller. PLCs are controllers that utilize microprocessors to make quick calculations and control peripheral

devices. PLCs are often used to read analog inputs as well as encoder inputs. PLCs are flexible and easily allow for process changes as well

as equipment upgrades.

MDS – Main Disconnect Switch. MDSs are used to turn the facility service to a control panel on and off. MDSs can be locked out and tagged

out to keep personnel safe while maintenance is being performed.

E-Stop – Emergency Stop. e-Stops are typically an illuminated or non-illuminated pushbutton used to stop equipment in the case of an

emergency. e-Stops are hardwired to disconnect power to an electric motor(s) as well as de-energize control relays.

Terminal Strip – Terminal strips consist of several individual terminal blocks aligned in a row. Terminal blocks pass wires from one point in a

control panel to another point. Terminal blocks are extremely advantageous when wiring field installed devices such as encoders, motors, and

switches. Terminal blocks allow wiring of these devices to be terminated at the terminal block as opposed to being terminated at a PLC, VFD,

or motor contactor.

Panel Meter – Panel meters are used to display feedback from a number of input devices. Panel meters are digital displays that provide visual

indication of a devices current position. Panel meters use input from potentiometers, linear sensors, encoders, or other analog devices. The

signals are then scaled using the panel meter to display position in a meaningful value such as inches or percentage.

Types of feedbackIncremental encoders – incremental encoders provide digital pulses or counts back to a PLC or VFD. a PLC can be programmed to use encoder

pulses to synchronize, position, or vary the speed of an electric motor. incremental encoders can be mounted on limit switches, reducers, or

electric motors. incremental encoders offer a variety of different pulses per revolution (PPR). incremental encoders can provide as little one

pulse per revolution up to several thousand pulses per revolution.

Absolute encoders – absolute encoders work similarly to incremental encoders. Pulses or counts are monitored by a PLC or VFD. ethernet/iP

encoders communicate with a PLC over an ethernet cable. Unlike incremental encoders, absolute encoders do not lose position or counts

when power is cycled. There is no need to reference or home absolute encoders after a power cycle.

Potentiometers – Potentiometers provide a 0 – 10 VDC analog output signal. This analog signal can be used by a PLC to scale the position of

a device. Potentiometer feedback can be found in rotary or string type devices. Rotary potentiometers can be mounted on limit switches.

String type potentiometers are usually mounted to equipment. Potentiometers are useful when an extremely precise degree of accuracy is not

needed.

Linear Sensors – Linear sensors output a 0 – 10 VDC, or 4 – 20ma analog output signal. Like a potentiometer this analog signal can be used

by a PLC to scale and position or control an electric motor. Depending on the location of the linear sensor in an application, linear sensors

provide the highest degree of accuracy. Linear sensors come in a variety of configurations. Rod, magnetic, and non-contact sensors are most

frequently used.

Load Cells – Load cells are feedback devices that detect load. Load cells can detect load in tension, compression, or both tension and

compression. Load cells are ideal for applications where load detection or load processes are needed. Load cells like linear sensors come in a

variety of configurations such as pancake, donut, or pin style.

Types of motionJogging – Jogging motion is the simplest and most common type of motion. Jogging an electric motor can be accomplished in two ways,

momentary or maintained. Momentary jogging dictates continual input from a user. The user must press and hold a pushbutton to jog the

motor in one direction or the other. Maintained jogging is accomplished through a one-time command such as pressing and releasing a

pushbutton. Momentary jogging stops when the user releases a pushbutton. Maintained jogging stops when the user presses the stop

pushbutton or the motor reaches a limit switch.

Positioning – Positioning applications move an electric motor to a specific position. Positioning can be accomplished using an aC, DC, or servo

motor along with a feedback device. Servo motors and certain aC and DC motors have encoders mounted on the motor. These devices run

in a closed loop to accurately move the electric motor to a desired position. Positioning devices typically use a HMi and input from a user to

position the electric motor.

Synchronization – Synchronization motion allows two or more electric motors to be moved in the same direction together. Synchronization motion

is most useful in applications that cannot be mechanically coupled. Synchronization provides a means to electrically couple the electric

motors. Synchronization uses positional feedback from multiple motors to hold a tolerance between the motors. Synchronization motion uses

multiple types of feedback as well as motor control devices.

Variable Speed – Variable speed motion allows an electric motor to be moved at various speeds. Variable speed applications are common in

applications where the manufacturing process changes frequently. Variable speed applications are useful in applications where the motor

needs to start slowly and ramp up to speed. HMis, speed pots, and selector switches can be used to vary the speed of an electric motor.

HMis provide the most flexibility by allowing the user to input a desired speed.