Photoelectric BKT Sensors Contrast Sensorballuff-ua.com/pdf/optic_contrast_en.pdfBKT Contrast Sensor...

BKTContrast Sensor

PhotoelectricSensors

2.2.54

Contrast sensors are high-resolution diffuse sensorsthat distinguish objectsbased on their gray values.Color, brightness andreflectivity have a strongeffect on the measuringresult.

When gray values differonly slightly the measuringdistance should be keptequal. The resolution of thesensor decreases withincreasing range.

A variety of modelswith various light types andfunctions are available.

Applications

– Sensing markings onpackaging material

– Synchronizing cutting orseparating processes

– Checking for adhesive,ink and color

– Position checking ofprinting templates

– Sensing objects basedon contrast

BKTContrast SensorProduct Overview

2.2.55

2.2

Photoelectricsensorsaccessoriespage 2.3.2 ...

2.3


Type

ContrastSensor

BKT 6K-001-P-S75BKT 6K-001-N-S75BKT 6K-001-P-02BKT 6K-001-N-02

BKT 18KF-001-P-S4BKT 18KF-001-N-S4BKT 18KF-001-P-02BKT 18KF-001-N-02

BKT 21M-002-P-S4BKT 21M-002-N-S4

BKT M-15-U-S4BKT M-15L-U-S4BKT M-11-U-03BKT M-11L-U-03

BKT M-15C-U-S4

BKT M-45-U-S4

OutputLighttype

Range

40...150 mm40...150 mm40...150 mm40...150 mm

10 mm10 mm10 mm10 mm

19 mm19 mm

6...12 mm*6...12 mm*6...12 mm*6...12 mm*6...12 mm*

0...3 mm

Connection

1 kHz1 kHz1 kHz1 kHz


5 kHz5 kHz


20 kHz

20 kHz

Outputfunction

Page

2.2.572.2.572.2.572.2.57

2.2.592.2.592.2.592.2.59

2.2.612.2.61

2.2.632.2.632.2.632.2.63

2.2.65

2.2.65

Whi

te li

ght

Red

and

gre

en li

ght

M8

conn

ecto

r, 4-

pin

M12

con

nect

or, 4

-pin

10...

30 V

DC

NP

N-T

rans

isto

r

PN

P-T

rans

isto

r

Ligh

t-on

Dar

k-on

UBSwitchingfrequency

Cab

le

Ana

log

outp

ut

Lase

r lig

ht

Contrast Sensor

Specialfeatures

for a

dapt

ing

fiber

opt

ics

www.balluff.com

*Longer ranges using interchangeable optics

Connectors ...page 5.2 ...

5

BKT 6KLaser Contrast Sensor


2.2.56

The BKT 6K laser contrastsensor is designed forreliable detection of small-area contrast differences.Even the narrowest lines canbe definitively sensed overthe optimum working rangeof 70...100 mm. Largerareas are capable of beingdetected outside this range.

Programming the sensor iseasy using a teach-in buttonor control line.

ConnectorStraight BKS-S 74Right-angle BKS-S 75

Mounting bracketBOS 6-HW-1

Wiring diagrams Recommended accessoriesplease order separately

BKT 6KLaser Contrast Sensor

2.2.57

2.2


2.3

SeriesWorking distance

Contrast SensorPNPNPNElectrical dataSupply voltage UB

RippleNo-load supply current I0 max.Switching outputSwitching typeOutput currentVoltage drop Ud at IeSettingsOptical dataEmitter, light typeWavelengthLaser classLight spot diameterTime dataResponse timeSwitching frequency fIndicatorsOutput function indicatorStability indicatorMechanical dataConnectionNo. of wires × cross-sectionHousing materialOptical surfaceWeightAmbient dataDegree of protection per IEC 60529Polarity reversal protectedShort circuit protectedAmbient light rejectionAmbient temperature range Ta

Connector orientation


BKT 6K40...150 mm*

BKT 6K-001-P-S75BKT 6K-001-N-S75

10...30 V DC10 %

≤ 25 mAPNP- or NPN-Transistor

Light-/dark-on (selectable)100 mA≤ 2.4 VTeach-in

Laser, red light650 nm

20.7 mm at focus (85 mm ±15 mm)

0.5 ms1 kHz

LED yellowLED green

M8 connector, 4-pin

impact-resistant ABSPMMA40 g

IP 67yesyes

EN 60947-5-2–20...+60 °C

BKT 6K40...150 mm*

BKT 6K-001-P-02BKT 6K-001-N-02

10...30 V DC10 %


Light-/dark-on (selectable)100 mA≤ 2.4 VTeach-in

Laser, red light650 nm

20.7 mm at focus (85 mm ±15 mm)

0.5 ms1 kHz

LED yellowLED green

2 m cable, PVC4×0.14 mm2

impact-resistant ABSPMMA120 g

IP 67yesyes

EN 60947-5-2–20...+60 °C

*Optimum working range for small markings: 70...100 mm

Contrast sensor values referenced to Kodak gray card 90% Reflexion, 100×100 mm.

Laser Contrast Sensor

www.balluff.com

Teach-in Teach-in


5

BKT 18KFContrast Sensor


2.2.58

Recommended accessoriesplease order separately

Mounting clampBOS 18,0-KB-1

Mounting bracketBES 18-HW-1

ConnectorStraight BKS-_ 19Right-angle BKS-_ 20

The BKT 18KF contrastsensor uses white light andcan be programmed with thepush of a button. It detectscolored markings as well asgray levels on varioussurfaces. In the standardsetting the sensor operatesusing dark-on.

A precise setting is availablefor slight contrastdifferences. The outputfunction can also beselected in this setting.

Function diagram

BN

BK

WH

BU

+UB

0 V

BN

BK

WH

BU

+UB

0 V

Wiring diagrams

BKT 18KF...P...

BKT 18KF...N...

Relative sensitivity

Sensingdistance


BKT 18KFContrast Sensor

2.2.59

2.2


2.3



RippleNo-load supply current I0 max.Switching outputSwitching typeOutput currentVoltage drop Ud at IeSettingsOptical dataEmitter, light typeWavelengthLight spot diameterTime dataResponse timeSwitching frequency fIndicatorsOutput function indicatorOperating/error indicatorMechanical dataDimensionsConnectionNo. of wires × cross-sectionHousing materialLens materialWeightAmbient dataDegree of protection per IEC 60529Polarity reversal protectedShort circuit protectedAmbient light rejectionAmbient temperature range Ta


BKT10 mm ±±±±±2 mm

BKT 18KF-001-P-S4BKT 18KF-001-N-S4

10...30 V DC≤ 2 V


Light- and dark-on100 mA

≤ 2 VTeach-in

LED, white light400...700 nm

approx. 4.5 mm at 10 mm

100 µs5 kHz

LED yellowLED green/red

M18×81.5 mmM12 connector, 4-pin

PBTPMMA25 g

IP 67yesyes

EN 60947-5-2–25...+55 °C

BKT10 mm ±±±±±2 mm

BKT 18KF-001-P-02BKT 18KF-001-N-02

10...30 V DC≤ 2 V


Light- and dark-on100 mA

≤ 2 VTeach-in


approx. 4.5 mm at 10 mm

100 µs5 kHz


M18×77 mm2 m cable, PVC

4×0.14 mm2

PBTPMMA75 g

IP 67yesyes

EN 60947-5-2–25...+55 °C

Contrast Sensor

www.balluff.com

Teach-in Teach-in


5

BKT 21MContrast Sensor


2.2.60

The BKT 21M contrastsensor uses white light andcan be programmed with thepush of a button. It detectscolored markings as well asgray levels on varioussurfaces. In its standardsetting the sensor is dark-switching (markings with lesslight intensity are detectedas the background).

Wiring diagrams Function diagram

ConnectorStraight BKS-_ 19Right-angle BKS-_ 20

Recommended accessoriesplease order separately


Mounting clampBOS 21-KH-1

Mounting clampBOS 21-KH-2


BKT 21M...P..

BKT 21M...N..

Relative sensitivity

Sensingdistance

A precise setting isavailable for slight contrastdifferences. The outputfunction can also beselected in this setting.

Indicators and operating elements

1 Output function indicator (yellow)2 Operating/error indicator (green/red)3 SET key

1 2 3

BKT 21MContrast Sensor

2.2.61

2.2


2.3




RippleNo-load supply current I0 max.Switching outputOutput currentSwitching typeVoltage drop Ud at IeSettingsAdditional functionsOptical dataEmitter, light typeWavelengthLight spot diameterTime dataResponse timeSwitching frequency fTime functionsIndicatorsOutput function indicatorOperating/error indicatorMechanical dataDimensionsConnectionHousing materialOptical surfaceWeightAmbient dataDegree of protection per IEC 60529Polarity reversal protectedShort circuit protectedAmbient light rejectionAmbient temperature range Ta

BKT19 mm ±±±±±2 mm

BKT 21M-002-P-S4BKT 21M-002-N-S4

10...30 V DC≤ 2 V DC≤ 30 mA

PNP- or NPN-Transistor100 mA

Light-/dark-on (settable in precise mode)≤ 2 V

Teach-inKey disabling possible


3.5 mm in 19 mm

0.1 ms5 kHz

20 ms off-delay


42.5×50×15 mmM12 connector, 4-pin

GD-Zn/AlGlass80 g

IP 67yesyes

EN 60947-5-2–25...+55 °C


rota

table

270

°

M4, 4 mm deep

opticalaxis

Contrast Sensor

�

www.balluff.com


5

In this device themicroprocessor takes overthe entire setup process.The latter monitors andsynchronizes the emitter,receiver and output circuits,for optimum switchingfrequency, repeatability andinsensitivity to interferenceand ambient light.The user needs only to presstwo keys for setting thesensor for the marking andthe background.Remote control of the keyfunctions and remoteselection of 4 previouslystored contrast ratios isavailable in the cable versiondepending on lead selection.

Features

– Optional vertical orhorizontal light spot

– Automatic selection ofred or green emitter light

– Automatic settingof light-on/dark-on

– Remote key functionsand 4 storable programs(cable version)

– Time delay and key lock– Interchangeable optics

(straight and 90°)– Analog output

It is also possible to enablea turn-off delay or to disablethe keys.The sensor output isswitched between NPN andPNP. All models have ananalog output whose signalis proportional to the lightintensity reflected from thetarget.The sensor lens can beplaced in two positions, forsetting the exit surfacestraight or rotated 90° fromthe sensor axis.

BKT MContrast Sensor


2.2.62

Recommendedaccessoriesplease order separately

LensBKT M-PK-1

Analog output

Analog output

Wiring diagrams

PNP/NPN

PNP/NPN

BKT M-11...

BKT M-15...

ConnectorStraight BKS-S 19-3Right-angle BKS-S 20-3

Function diagram

Working distance (mm)

Rel

ativ

e se

nsiti

vity

(%)

Standard lens(9 mm)

With lensBKT M-PK-1(18 mm)

BKT MContrast Sensor

2.2.63

2.2


2.3


SeriesWorking distanceWorking distance with lens PK-1

Contrast SensorPNP/NPN vertical spotPNP/NPN horizontal spotElectrical dataSupply voltage UB

RippleNo-load supply current I0 max.Switching outputOutput currentSwitching typeVoltage drop Ud at IeAnalog outputSettingsAdditional functionsOptical dataEmitter, light typeWavelengthLight spot diameterTime dataResponse timeSwitching frequency fTime functionIndicatorsReady indicatorOutput function indicatorMechanical dataConnectionNo. of wires × cross-sectionHousing materialOptical surfaceWeightAmbient dataDegree of protection per IEC 60529Polarity reversal protectedShort circuit protectedAmbient light rejectionAmbient temperature range Ta

BKT9 mm ±±±±±3 mm18 mm ±±±±±4 mm

BKT M-15-U-S4BKT M-15L-U-S4

10...30 V DC2 V DC

≤ 80 mAPNP- and NPN-Transistor (selectable)

200 mALight-/dark-on (selectable)

≤ 2 V0...5.5 V DC*


LED red/green630 nm/526 nm

1.5×5 mm**50 µs

10 kHz20 ms off-delay selectable

LED greenLED red

M12 connector, 4-pin

GD-ZnGlass310 g

IP 67yesyes

EN 60947-5-2–10...+55 °C

Cover cap

Light exitposition exchangeable


3xconvertible

*2.5 V DC with Kodak gray card 90% Reflexion**2×7 mm with BKT M-PK1

BKT9 mm ±±±±±3 mm18 mm ±±±±±4 mm

BKT M-11-U-03BKT M-11L-U-03

10...30 V DC2 V DC



≤ 2 V0...5.5 V DC*


LED red/green630 nm/526 nm

1.5×5 mm**50 µs

10 kHz20 ms off-delay selectable

LED greenLED red

3 m cable, PVC6×0.34 mm2 with shield

GD-ZnGlass600 g

IP 67yesyes

EN 60947-5-2–10...+55 °C

Contrast Sensor

www.balluff.com


5

The Series BKT M...contrast sensors are alsoavailable with white light.Models with a round lightspot or with a fiber opticport are available.

Features

– Round light spot– White light– Automatic setting of

light-on/dark-on– Time delay and key lock

selectable– Interchangeable optics

(straight and 90°)– Analog output

BKT MContrast sensor with white light


2.2.64

Recommendedaccessoriesplease order separately

LensBKT M-PK-1

Analog output

Wiring diagram

PNP/NPN

BKT M...

Function diagrams

Working distance (mm)

Rel

ativ

e se

nsiti

vity

(%)

Standard lens(9 mm)

With lensBKT M-PK-1(18 mm)

Fiber opticsBFO KTS-XBH-MZG-00-1

ConnectorStraight BKS-S 19-3Right-angle BKS-S 20-3

Fiber optics

BKT MContrast Sensorwith white light

2.2.65

2.2


2.3


Contrast Sensorwith white light

www.balluff.com

Cover cap

Light exitposition exchangeable

3xconvertible

SeriesWorking distanceWorking distance with lens PK-1Working distance with fiber optics (diffuse)

Contrast SensorPNP/NPN for fiber opticsPNP/NPN round spotElectrical dataSupply voltage UB

RippleNo-load supply current I0 max.Switching outputOutput currentSwitching typeVoltage drop Ud at IeAnalog outputSettingsAdditional functionsOptical dataEmitter, light typeWavelengthTime dataResponse timeSwitching frequency fTime functionIndicatorsReady indicatorOutput function indicatorMechanical dataConnectionHousing materialOptical surfaceWeightAmbient dataDegree of protection per IEC 60529Polarity reversal protectedShort circuit protectedAmbient light rejectionAmbient temperature range Ta

BKT

0...3 mm

BKT M-45-U-S4

10...30 V DC2 V DC



≤ 2 V0...5.5 V DC*


LED white400...700 nm

25 µs20 kHz

20 ms off-delay selectable

LED greenLED red

M12 connector, 4-pinGD-ZnGlass310 g

IP 67yesyes

EN 60947-5-2–10...+55 °C


*2.5 V DC with Kodak gray card 90 % Reflexion

BKT9 mm ±±±±±3 mm18 mm ±±±±±4 mm

BKT M-15C-U-S4

10...30 V DC2 V DC



≤ 2 V0...5.5 V DC*


LED white400...700 nm

25 µs20 kHz

20 ms off-delay selectable

LED greenLED red

M12 connector, 4-pinGD-ZnGlass310 g

IP 67yesyes

EN 60947-5-2–10...+55 °C


5

Photoelectric BKT Sensors Contrast Sensorballuff-ua.com/pdf/optic_contrast_en.pdfBKT Contrast Sensor...

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