Leuze KRTM 20 High Resolution Multicolor Contrast Sensors · minimal gray levels (contrasts). By...

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Dynamic teach-inRGB transmitterResponse time analog/digital (10μs/10μs or 10μs/20μs)Digital switching frequency 50kHz or 25kHzResolution of 70 gray levels at the digital outputResolution of 400 gray levels at the analog outputAnalog output 1 … 10mAChangeover to the switching thresholdChangeover to the analysis depthL/D switchingPulse stretching

12mm20mm50mm

12 - 30 V

DC 50 / 25kHz

Accessories:(available separately)

M12 connectors, 5-pin (KD …)Ready-made cables (K-D …)Interchangeable objectivesTool for changing objectives

UL USC

LISTED

IEC 60947... IEC 60947... IP 67

Dimensioned drawing

A Light spot orientation verticalB Optical axisC M5/5.5mm deepD Scanning rangeE FrontF Head

Electrical connection

PNP + analog

PNP

NPN + analog

NPN

KRTM 20 High Resolution Multicolor Contrast Scanner

Specifications and descriptionen

01-2

011/

0650

1166

69

Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]

SpecificationsOptical dataScanning range with objective 1 1)

1) Interchangeable objective, available as accessory

12mm ± 1mmScanning range with objective 2 2)

2) Standard objective, state on delivery

20mm ± 2mmScanning range with objective 3 1) 50mm ± 5mmLight spot dimension with objective 1 1) 3.0mmx1.0mm or round light spot D = 0.5mmLight spot dimension with objective 2 2) 4.0mmx1.2mm or round light spot D = 0.6mmLight spot dimension with objective 3 1) 10.0mmx2.0mm or round light spot D = 1.0mmLight spot orientation vertical or horizontalLight source LEDs (red, green, blue)

TimingSwitching frequency digital output 25kHz/50kHz reversible (see remarks)Response time digital output 20μs/10μs reversible (see remarks)Response jitter digital output 10μsResponse time of analogue output 10μsDelay before start-up ≤ 250ms

Electrical dataOperating voltage UB 12 … 30VDC (incl. residual ripple)Residual ripple ≤ 15% of UBSwitching output PNP, NPNFunction characteristics light or dark switching, reversible via buttonAnalog output 1 … 10mASignal voltage high/low ≥ (UB-2V)/≤ 2VOutput current max. 100mAOpen-circuit current ≤ 60mA

Indicators After power-on:ON LED on device set to factory settingsON LED flashing slowly device not set to factory settings

(display only for approx. 10s after power-on)After teach-in:ON LED on switching threshold set to factory settings

–> switching threshold in centerON LED flashing slowly switching threshold was reconfigured

–> switching threshold close to the markQ/T LED flashing quickly teaching errorIn run mode:ON LED on readyDelay LED pulse stretching on/offL/D LED light/dark switchingQ/T LED on mark detectedQ/T LED flashing quickly device errorIn configuration mode:ON LED flashing quickly device is in configuration modeDelay LED off 2x analysis depth (response time 20μs)Delay LED on 1x analysis depth (response time 10μs)L/D LED off switching threshold in centerL/D LED on switching threshold close to the mark

Mechanical dataHousing diecast zincOptics cover glassWeight 300gConnection type M12 connector, stainless steel, 5-pin

Environmental dataAmbient temp. (operation/storage) -25°C … +60°C/-40°C … +70°CProtection class IP 67LED class 1 (acc. to EN 60825-1)VDE safety class IIProtective circuit 3)

3) 2=polarity reversal protection, 3=short-circuit protection for all outputs

2, 3Standards applied IEC 60947-5-2

OptionsSynchronous inputPNP: Stop/Start measurement UB/0V or not connectedNPN: Stop/Start measurement 0V/UB or not connectedSynchronization delay ≤ 0.5msTeach inputPNP: active / not active UB/0V or not connectedNPN: active/not active 0V/UB or not connectedTeach delay ≤ 10msPulse stretching 20ms, can be activated via buttonDevice configuration continue to press the teach button during power-onChangeover switching threshold see remarksChangeover response time see remarks

Order guideSee section Preferred types

KRTM 20

RemarksApproved purpose: This product may only be used by qualified personnel and must only be used for the approved purpose. This sensor is not a safety sensor and is not to be used for the protection of persons.

With shiny objects, the sensor is to be mounted at an angle to the object surface.

Device configuration: 1. Configuration mode is

activated by holding down the teach button duringpower-on (ON LEDflashes).

2. The analysis depth ischanged over using theDelay button:Delay LED off =2x analysis depth(response time 20μs)Delay LED on =1x analysis depth(response time 10μs)

3. The switching threshold is changed over using theL/D button:L/D LED off=Switching threshold incenterL/D LED on=Switching threshold closeto the mark

4. Press the teach button toend device configuration.

5. Back to factory settings:Simultaneously hold down the Delay button and theL/D button during power-on to reset the sensor tofactory settings.


Function principle of the contrast scannerThese contrast scanners are devices that can, with the aid of multiple transmitter colors (red, green, blue), distinguish between minimal gray levels (contrasts). By means of the automatic transmitter selection after a teach-in, the optimum functional safety for the respective contrast is determined and set by the device itself. As a result, any combination of marks or backgrounds can be detected with optimum functional safety. Through constant measurement and regulation of the emitted light, the devices operate with very good temperature stability. Re-teaching of the mark is, thus, no longer necessary.

Each transmitter color consists of 4 LEDs. A longish light spot with four points is formed in the focal point. This very small, extremely bright light spot guarantees a high repeatability and positioning accuracy. For the case that the mark or background is not optimally printed, the light spot can be focused by slightly changing the scanning distance in such a way that a homogeneous, rectangular light spot is formed.

With this teaching type, background and mark must be placed statically below the light spot. Using the synchronization input, the switching output can be activated or deactivated.

Controls and indicators

Signal response during teach-inDynamic 2-point teach

Teach processThe teach process is performed with the aid of the teach button or external teach lines. The two processes work in the same way.

Operation Transmitter Indicator LED

Position the light spot on the background Red, green or blue light spot visible

Press the teach button approx. 0.5s orset the teach line to high level

All colors are onWhite light spot visible

Q/T, Delay and L/D LEDs flash

Advance paper sheet for at least one pattern length



Briefly press teach button orteach line to low level

Changeover to red, green or blueRed, green or blue light spot visible

ON LED on or flashes 3xQ/T LED onQ/T LED flashing –> error

Teaching errorstart new teaching process

All colors off ON LED onQ/T LED flashing –> error

ON LED on ready / run modeON LED flashing slowly device is not set to factory settings

(Display only for approx. 10s after power-on)ON LED flashing quickly device is in configuration mode

Q/T LED on mark detectedQ/T LED flashing quickly teach error or device error

Run mode:Delay LED pulse stretching on /offConfiguration mode:Delay LED off 2x analysis depth (response time 20μs)Delay LED on 1x analysis depth (response time 10μs)

Run mode:L/D LED light/dark switchingConfiguration mode:L/D LED off switching threshold in centerL/D LED on switching threshold close to the mark

Label with marks

Open measurement window Close measurement window

Switching threshold in centerReceive signal

Switching output for switchingthreshold in center

Switching output for switchingthreshold near the mark

Switching threshold near the mark



Calibration - analog output 1 … 10mAThis is an uncalibrated measurement value. The current value that is output is proportional to the last contrast ascertained by means of teach-in.

For rough calibration of the analog output, a teach-in with the following sequence is recommended .

1. Teach point on background –> on white paper. 2. Teach point on mark –> without object (into open space).

Preferred types

Additional types on request

Selection table

Order code

Equipment KR

TM

20M

/P-1

2-64

20-S

12P

art

No.

501

1647

4Scanning range 12mm

20mm50mm

Light spot orientation verticalhorizontalround

Optical outlet fronthead

Output wiring PNPNPNanalogue current

Other features static teach-indynamic teach-insynchronous input

KRTM 20


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Static teach-in RGB transmitter Response time analog/digital (10μs/10μs

or 10μs/20μs) Digital switching frequency 50kHz or

25kHz Resolution of 70 gray levels at the digital

output Resolution of 400 gray levels at the analog

output Analog output 1 … 10mA Changeover to the switching threshold Changeover to the analysis depth L/D switching Pulse stretching

12mm20mm50mm

12 - 30 V

DC 50 / 25kHz


M12 connectors, 5-pin (KD …) Ready-made cables (K-D …) Interchangeable objectives Tool for changing objectives

IEC 60947... IEC 60947... IP 67

Dimensioned drawing



PNP + analog

PNP

NPN + analog

NPN


Specifications and descriptionen

03-2

014/

0450

1134

52-0

1


SpecificationsOptical dataScanning range with objective 1 1)

1) Interchangeable objective, available as accessory

12mm ± 1mmScanning range with objective 2 2)

2) Standard objective, state on delivery

20mm ± 2mmScanning range with objective 3 1) 50mm ± 5mmLight spot dimension with objective 1 1) 3.0mmx1.0mm or round light spot D = 0.5mmLight spot dimension with objective 2 2) 4.0mmx1.2mm or round light spot D = 0.6mmLight spot dimension with objective 3 1) 10.0mmx2.0mm or round light spot D = 1.0mmLight spot orientation vertical or horizontalLight source LEDs (red, green, blue)

TimingSwitching frequency digital output 25kHz/50kHz reversible (see remarks)Response time digital output 20μs/10μs reversible (see remarks)Response jitter digital output 10μsResponse time of analogue output 10μsDelay before start-up ≤ 250ms

Electrical dataOperating voltage UB 3)

3) For UL applications: for use in class 2 circuits according to NEC only

12 … 30VDC (incl. residual ripple)Residual ripple ≤ 15% of UBSwitching output PNP, NPNFunction characteristics light or dark switching, reversible via buttonAnalog output 1 … 10mASignal voltage high/low ≥ (UB-2V)/≤ 2VOutput current max. 100mAOpen-circuit current ≤ 60mA

Indicators After power-on:ON LED on device set to factory settingsON LED flashing slowly device not set to factory settings

(display only for approx. 10s after power-on)After teach-in:ON LED on switching threshold set to factory settings

–> switching threshold in centerON LED flashing slowly switching threshold was reconfigured

–> switching threshold close to the markQ/T LED flashing quickly teaching errorIn run mode:ON LED on readyDelay LED pulse stretching on/offL/D LED light/dark switchingQ/T LED on mark detectedQ/T LED flashing quickly device errorIn configuration mode:ON LED flashing quickly device is in configuration modeDelay LED off 2x analysis depth (response time 20μs)Delay LED on 1x analysis depth (response time 10μs)L/D LED off switching threshold in centerL/D LED on switching threshold close to the mark


Environmental dataAmbient temp. (operation/storage) -25°C … +60°C/-40°C … +70°CProtection class IP 67Light source free group (in accordance with EN 62471)VDE safety class IIProtective circuit 4)


2, 3Standards applied IEC 60947-5-2Certifications UL 508, C22.2 No.14-13 3) 5)

5) These proximity switches shall be used with UL Listed Cable assemblies rated 30V, 0.5A min,in the field installation, or equivalent (categories: CYJV/CYJV7 or PVVA/PVVA7)

OptionsSynchronous inputPNP: Stop/Start measurement UB/0V or not connectedNPN: Stop/Start measurement 0V/UB or not connectedSynchronization delay ≤ 0.5msTeach inputPNP: active / not active UB/0V or not connectedNPN: active/not active 0V/UB or not connectedTeach delay ≤ 10msPulse stretching 20ms, can be activated via buttonDevice configuration continue to press the teach button during power-onChangeover switching threshold see remarksChangeover response time see remarks

KRTM 20

Remarks Approved purpose:

This product may only beused by qualified person-nel and must only be used for the approved purpose. This sensor is not a safetysensor and is not to beused for the protection ofpersons.

With shiny objects, thesensor is to be mounted at an angle to the object sur-face.

Device configuration:1. Configuration mode is

activated by holding down the teach button duringpower-on (ON LEDflashes).

2. The analysis depth ischanged over using theDelay button:Delay LED off =2x analysis depth(response time 20μs)Delay LED on =1x analysis depth(response time 10μs)

3. The switching threshold is changed over using the L/D button:L/D LED off=Switching threshold incenterL/D LED on=Switching threshold closeto the mark

4. Press the teach button toend device configuration.

5. Back to factory settings:Simultaneously hold down the Delay button and theL/D button during power-on to reset the sensor tofactory settings.


Order guideThe sensors listed here are preferred types; current information at Leuze webiste.

Function principle of the contrast scannerThese contrast scanners are devices that can, with the aid of multiple transmitter colors (red, green, blue), distinguish between minimal gray levels (contrasts). By means of the automatic transmitter selection after a teach-in, the optimum functional safety for the respective contrast is determined and set by the device itself. As a result, any combination of marks or backgrounds can be detected with optimum functional safety. Through constant measurement and regulation of the emitted light, the devices oper-ate with very good temperature stability. Re-teaching of the mark is, thus, no longer necessary.

Each transmitter color consists of 4 LEDs. A longish light spot with four points is formed in the focal point. This very small, extremely bright light spot guarantees a high repeatability and positioning accuracy. For the case that the mark or background is not optimally printed, the light spot can be focused by slightly changing the scanning distance in such a way that a homoge-neous, rectangular light spot is formed.

With this teaching type, background and mark must be placed statically below the light spot. Using the synchronization input, the switching output can be activated or deactivated.

Selection table

Order code

Equipment KR

TM

20M

/P-2

0-63

20-S

12P

art

No.

501

1343

5

KR

TM

20M

/N-2

0-63

20-S

12P

art

No.

501

1343

6

KR

TM

20M

/C-2

0-65

26-S

12P

art

No.

501

1343

8

KR

TM

20M

/C-2

0-66

26-S

12P

art

No.

501

1343

7

KR

TM

20M

/P-2

0-33

20-S

12P

art

No.

501

1420

2

KR

TM

20M

/N-2

0-33

20-S

12P

art

No.

501

1420

1

KR

TM

20M

/P-5

0-63

20-S

12P

art

No.

501

1617

7

Scanning range 12mm20mm 50mm

Light spot orientation vertical horizontalround


Output wiring PNP NPN analogue current

Other features static teach-in dynamic teach-insynchronous input



Controls and indicators

Signal response during teach-inStatic 2-point teach

Teach processThe teach process is performed with the aid of the teach button or external teach lines. The two processes work in the same way.

Calibration - analog output 1 … 10mAThis is an uncalibrated measurement value. The current value that is output is proportional to the last contrast ascertained by means of teach-in.

For rough calibration of the analog output, a teach-in with the following sequence is recommended .

1. Teach point on background –> on white paper. 2. Teach point on mark –> without object (into open space).



Press the teach button approx. 0.5s orset the teach line to high level



Position the light spot on the mark All colors are onWhite light spot visible


Briefly press teach button orteach line to low level

Changeover to red, green or blueRed, green or blue light spot visible

ON LED on or flashes 3xQ/T LED onQ/T LED flashing –> error


All colors off ON LED onQ/T LED flashing –> error

ON LED on ready / run modeON LED flashing slowly device is not set to factory settings

(Display only for approx. 10s after power-on)ON LED flashing quickly device is in configuration mode

Q/T LED on mark detectedQ/T LED flashing quickly teach error or device error

Run mode:Delay LED pulse stretching on /offConfiguration mode:Delay LED off 2x analysis depth (response time 20μs)Delay LED on 1x analysis depth (response time 10μs)

Run mode:L/D LED light/dark switchingConfiguration mode:L/D LED off switching threshold in centerL/D LED on switching threshold close to the mark

Label with marks

1. Teach point on background 2. Teach point on mark

Switching threshold in centerReceive signal

Switching output for switching thresholdin center

Switching output for switching thresholdnear the mark

Switching threshold near the mark

KRTM 20


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Freely programmable via protocol interface

Freely adjustable transmitter colour, amplifi-cation and switching threshold

Response time digital/analogue: 20µs/6.25µs

Analogue and digital output

Parameterisation input

12mm20mm50mm

12 - 30 V

DC 25 kHz


M12 connectors, 5-pin (KD …)

Ready-made cables (K-D …)

Interchangeable objectives

Tool for changing objectives

UL USC

LISTED

IEC 60947... IEC 60947... IP 67

Dimensioned drawing



KRTM 20 Contrast scanner RGB


SpecificationsOptical dataScanning range with objective 1 (accessory) 12mm ± 1mmScanning range with objective 2 20mm ± 2mmScanning range with objective 3 (accessory) 50mm ± 5mmLight spot dimensions with objective 1 3.0mmx1.0mmLight spot dimensions with objective 2 4.0mmx1.2mmLight spot dimensions with objective 3 10.0mmx2.0mmLight spot orientation verticalLight source LEDs (red, green, blue)

TimingDigital switching frequency max. 25kHzResponse time digital/analogue min. 20µs/6.25µsDelay before start-up ≤ 250ms

Electrical dataOperating voltage UB 12 … 30VDC (incl. residual ripple)Residual ripple ≤ 15% of UBSwitching output PNPFunction characteristics light switchingAnalogue output 1 … 10mASignal voltage high/low ≥ (UB-2V)/≤ 2VOutput current max. 100mABias current ≤ 60mA

Indicators LED green 1 ON "ready"LED green 2 without functionLED green 3 without functionLED yellow Q/T "object detected"LED yellow flashing Q/T "device error, teach error"

Keyboard Delay button locked (see remarks)L/D button locked (see remarks)Teach button locked





OptionsInput for parameterisationPNP: active / not active UB/0V or not connected

Order guideSee section 4. Preferred types

Tables

Diagrams

KRTM 20

RemarksWith shiny objects, the sensor is to be mounted at an angle to the object surface.

The objectives and objective covers must not be removed.

Keyboard is disabled.

Button LEDs must be "OFF".

L/D and Delay buttons- KRTM 20…-0001-S12:

Dynamic keyboard lock-ing (operable for approx. 10s after power-on).

- KRTM 20…-0002-S12: Static keyboard locking (not operable).


1. Function principle of the contrast scannerThis contrast scanner is a device which, with the aid of multiple transmitter colours (red, green, blue), can differentiate between extremely small differences in contrast (grey tones). A protocol interface allows the transmitter colour, amplification and switching threshold to be freely programmed. Additionally, all internal values (including analogue value) can be read back via this protocol interface.

As a result, the primary control can influence all sensor properties and also read back the actual measurement values in digital form. The switching threshold can also be freely adapted. Once parameterisation has been completed, the sensor functions as a standard contrast scanner and outputs the measurement values via the analogue output and switching output.

Each transmitter colour consists of 4 LEDs. A longish light spot with four points is formed in the focal point. This very small, extremely bright light spot guarantees a high repeatability and positioning accuracy. For the case that the marker or background is not optimally printed, the light spot can be focused by slightly changing the scanning distance in such a way that a homogeneous, rectangular light spot is formed.

2. Controls and indicators

3. Signal responseData pulses: 3ms = 1, 6ms = 0 (High level)

Pause = 3ms (Low level)

Adjustable values: Switching threshold: 0 … 127 (Bit0 … Bit6)Transmitter colour: 1 … 3 (Bit0 … Bit1), 1 = Red, 2 = Green, 3 = BlueAmplification level: 0 … 8 (Bit0 … Bit7)Analogue value: 0 … 255 (Bit0 … Bit7)

Parameterisation of switching threshold and transmitter colour:

Request for switching threshold:

LED ON (green) for "Ready"

LED Delay (green) without function (LED=OFF)

LED Q/T (yellow) for "Object detected"and "Error display" (flashing)

LED L/D (green) without function (LED=OFF)

A StartB Switching thresholdC Colour = blueD PauseE RequestF Amplification level 7

KRTM 20


Acknowledgement of switching threshold and transmitter colour:

Parameterisation of amplification level:

Request for amplification level and analogue value:

Acknowledgement of amplification level and analogue value:

4. Preferred types

Additional types on request

Selection table

Order code

Equipment KR

TM

20M

/V-2

0-00

01-S

12P

art N

o. 5

00 3

5674

KR

TM

20M

/V-2

0-00

02-S

12P

art N

o. 5

01 0

9183

Scanning range 12mm20mm50mm

Transmitter colour RGBgreen




Other features programmable via protocol interfacestatic keyboard lockingdynamic keyboard locking

A StartB Switching thresholdC Colour = blueD PauseE RequestF Amplification level = 7G Analogue value = 129

KRTM 20


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Static teach-in procedureCan store 128 data records

Response time digital/analogue: 20µs/6.25µs3 transmitters in the colours red, green, blue

Programming via teach-in button

20mm

12 - 30 V

DC 25 kHz


M12 connectors, 5-pin (KD …)Ready-made cables (K-D …)Interchangeable objectives

Tool for changing objectives

ISO9001

UL USC

LISTED

IEC 60947... IEC 60947... IP 67

Dimensioned drawing



DSA Data set acknowledgement (Data Set Acknowledge)DSS Data set selection (Data Set Select)

KRTM 20 Cut-Marking System


Leuze electronic

SpecificationsOptical dataScanning range with objective 1 (accessory) 12mm ± 1mmScanning range with objective 2 20mm ± 2mmScanning range with objective 3 (accessory) 50mm ± 5mmLight spot dimensions with objective 1 3.0mmx1.0mmLight spot dimensions with objective 2 4.0mmx1.2mmLight spot dimensions with objective 3 10.0mmx2.0mmLight spot orientation verticalLight source LEDs (red, green, blue)

TimingDigital switching frequency max. 25kHzResponse time digital/analogue min. 20µs/6.25µsDelay before start-up ≤ 250ms

Electrical dataOperating voltage UB 12 … 30VDC (incl. residual ripple)Residual ripple ≤ 15% of UBSwitching output PNPFunction characteristics light or dark switching, reversible via buttonAnalogue output 1 … 10mASignal voltage high/low ≥ (UB-2V)/≤ 2VOutput current max. 100mABias current ≤ 60mA

Indicators LED green 1 ON "ready"LED green 2 "ON/OFF" delayLED green 3 L/D "light/dark switching"LED yellow Q/T "object detected"LED yellow flashing Q/T "device error, teach error"

KeyboardRelease via bit 9 of the data protocol





OptionsInput for data-record selectionPNP: active / not active UB/0V or not connectedPulse stretching 20ms, can be activated via button


Tables

Diagrams

KRTM 20

RemarksWith shiny objects, the sensor is to be mounted at an angle to the object surface.The objectives and objective covers must not be removed.


Leuze electronic

1. Method of function of the cut-marking systemWith this contrast scanning system, 128 data records can be stored in the sensor in zero-voltage-safe memory. A simple and asyn-chronous protocol is used for data-record selection and assignment. The transmission rate is specified by the controller by means of the start-bit pulse width. As a result, the contrast scanning system can work together with any controller system. A standardised serial interface, e.g. RS 232, is not required as communication is realised via standard PNP signals. Adjustment is performed by means of static teach-in via the keyboard, i.e. background and mark must be statically positioned below the light spot.

Contrast detection is achieved with the aid of multiple transmitter colours (red, green, blue). This allows the detection of minimal differences in contrast (grey tones). Each transmitter colour consists of 4 LEDs. A longish light spot with four points is formed in the focal point. This very small, extremely bright light spot guarantees a high repeatability and positioning accuracy. For the case that the marker or background is not optimally printed, the light spot can be focused by slightly changing the scanning distance in such a way that a homogeneous, rectangular light spot is formed.


3. Protocol procedure for selecting a data record- 1. The sensor system determines the period length T (T = n*10ms) from the start bit. The start bit must be a multiple of

10ms. Maximum period duration Tmax = 200ms.- 2. A pause lasting 3T follows the start bit.- 3. Transmission of bit 9 ... bit 0 (evaluation of the level in the middle of the period)- 4. Acknowledgement of the data record following reception of bit 0. The sensor system repeats the entire protocol (start bit +

3T + bit 9 ... bit 0) at the switching output.- 5. During data-record selection, mark detection is not active.

Data-record selection by the controller via pin 5 and acknowledgement of the data record by the sensor system via pin 4 (switching output Q):


LED Delay (green) for pulse stretching20ms (LED=ON)


LED L/D (green) for dark switching(LED=ON)

KRTM 20

Bit 9 - button lock (1=all buttons disabled, 0=all buttons enabled)

Bit 8 - no function

Bit 7 - no function

Bit 6 - most significant bit of the data-record number (1=high level, 0=low level)

Bit 0 - least significant bit of the data-record number (1=high level, 0=low level)

Start bit


Leuze electronic

4. Teach processThe teach process is performed with the aid of the Teach button. The keyboard is enabled via bit 9.



Press the Teach button approx. 1s All colours are onWhite light spot visible

All LEDs flash

Position the light spot on the marker All colours are onWhite light spot visible

All LEDs flash

Press the Teach button approx. 1s Changeover to red, green or blueRed, green or blue light spot visible

ON (green) illuminatedQ/T (yellow) offQ/T (yellow) flashing (error)


All colours off ON (green) illuminatedQ/T (yellow) flashing (error)

KRTM 20

SSignal response during teach-in

5. Preferred typesSelection table

Order code

Equipment KR

TM

20M

/V-2

0-00

04-S

12P

art N

o. 5

00 4

1007

Scanning range 12mm20mm50mm

Transmitter colour RGBgreen




Other features cut-marking systemcan store 128 data recordsstatic teach-inteach-in, backgroundsynchronous input

LabelTeach button

Switching thresholdReceived signal

LED Q/TSwitching output with light switchingSwitching output with dark switching


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2000

84S

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n_50

1185

29.fm

Dynamic teach-in process Can store 128 data records Programming via teach-in via button or

teach input (pin 5) Remote control after teach-in Small, round light spot (1 of 4 LEDs)

20mm

12 - 30 V

DC 80 kHz


M12 connectors, 5-pin (KD …) Ready-made cables (K-D …) Interchangeable objectives Tool for changing objectives

IEC 60947... IEC 60947... IP 67

Dimensioned drawing



DSA Data set acknowledgment (Data Set Acknowledge)DSS Data set selection (Data Set Select)

KRTM 20M/N-20-0084-S12 Cut-marking system

en 0

2-20

12/1

050

1185

29


SpecificationsOptical dataScanning range with objective 1 (accessory) 11mm (in focus mode)Scanning range with objective 2 18mm (in focus mode)Scanning range with objective 3 (accessory) 44mm (in focus mode)Light spot dimensions with objective 1 Ø 0.5mmLight spot dimensions with objective 2 Ø 0.6mmLight spot dimensions with objective 3 Ø 1.0mmLight source LEDs (red, green, blue)

TimingClock frequency 160kHzSwitching frequency 80kHzAnalysis depth 1Response time 6.75μsJitter 6.75μsDelay before start-up ≤ 250ms

Electrical dataOperating voltage UB 12 … 30VDC (incl. residual ripple)Residual ripple ≤ 15% of UBSwitching output NPNFunction 1. Operational function light or dark switching, reversible via button

2. Remote control 2Hz pulse sequence (after faulty teach-in via pin 5 or button)Analog output 1 … 10mASignal voltage high/low ≥ (UB-2V)/≤ 2VOutput current max. 100mAOpen-circuit current ≤ 100mA

Indicators LED green 1 ON "ready"LED green 2 "ON/OFF" delayLED green 3 L/D "light/dark switching"Yellow LED Q/T "object detected"Yellow LED, flashing Q/T "device error, teach error"

KeyboardRelease via bit 9 of the data protocol


Environmental dataAmbient temp. (operation/storage) -25°C … +60°C/-40°C … +70°CProtection class IP 67Light source exempt group (in acc. with EN 62471)VDE safety class IIProtective circuit 1)



OptionsInput for data-record selectionNPN: active/not active 0V/UB or not connectedTeach-in inputNPN: active/not active 0V/UB or not connected (for function see item 4)Synchr. inputNPN: active/not active 0V/UB or not connected (for function see item 4)Pulse stretching 10ms, can be activated via buttonRemote control 2Hz on switching output pin 4 (after teaching error)

acknowledgement of the teaching error, see pt.4. Teach event

Compensation active temperature and LED compensation through reference receiver


Tables

Diagrams

KRTM 20M/N-20-0084-S12

Remarks Approved purpose:

This product may only beused by qualified person-nel and must only be used for the approved purpose. This sensor is not a safetysensor and is not to beused for the protection ofpersons.

With shiny objects, thesensor is to be mounted at an angle to the objectsurface.

The objectives andobjective covers must notbe removed.

This data sheet applies for device firmware with pro-duction date after1210xxxxxxx (year=2012,month=October).


1. Method of function of the cut-marking systemWith this contrast scanning system, 128 data records can be stored in the sensor in zero-voltage-safe memory. A simple and asynchronous protocol is used for data-record selection and assignment. The transmission rate is specified by the controller by means of the start-bit pulse width. As a result, the contrast scanning system can work together with any controller system. A standardized serial interface, e.g. RS 232, is not required as communication is realized via standard NPN signals.

Setting is performed with dynamic teach-in via the keyboard or teach input (pin 5). When teach-in starts, a measurement window opens and closes when teach-in ends. The minimum and maximum values are determined and the switching threshold is set in the center.

Contrast detection is achieved with the aid of multiple transmitter colors (red, green, blue). This allows the detection of minimal differences in contrast (gray tones). Each transmitter color consists of 1 LED. A round light spot is formed in the focal point. This very small, extremely bright light spot guarantees a high repeatability and positioning accuracy.

The system features a reference receiver which ensures temperature and LED compensation. This leads to a very stable long-term behavior. The contrast scanners are not calibrated against reference contrasts.


In the factory settings, the keyboard is enabled.

3. Protocol procedure for selecting a data record- 1. The sensor system determines the period length T (T = n*5ms) from the start bit. The start bit must be a multiple of

5ms. Maximum period duration Tmax = 100ms.- 2. A pause lasting 3T follows the start bit.- 3. Transmission of bit 9 ... bit 0 (evaluation of the level in the middle of the period).- 4. Acknowledgment of the data record following reception of bit 0. The sensor system repeats the entire protocol

(start bit + 3T + bit 9 ... bit 0) at the switching output.- 5. During data-record selection, mark detection is not active.

Data-record selection by the controller via pin 5 and acknowledgment of the data record by the sensor system via pin 4 (switching output Q):


LED delay (green) for pulse stretching10ms (LED=ON)


LED L/D (green) for dark switching(LED=ON)

Bit 9 - button lock(0V = all buttons disabled, UB = all buttons enabled1))

Bit 8 - no function

Bit 7 - no function

Bit 6 - most significant bit of the data-record number (0V = active, UB = inactive)

Bit 0 - least significant bit of the data-record number (0V = active, UB = inactive)

1) Factory setting

Start bit

KRTM 20M/N-20-0084-S12


4. Teach processThe teach event is performed with the aid of the teach button or the teach input (pin 5).

Teach-in via teach buttonThe keyboard is enabled via bit 9.

Teach-in via teach input (pin 5)Pulse> 200ms starts the dynamic teach-in.

Acknowledgment of a teaching error after teach-in (pin 5)One pulse <2ms acknowledges the teaching error and activates the last valid teach values.

5. Preferred types



Press the teach button approx. 0.5s All colors are onWhite light spot visible

All LEDs flash

Move the light spot onto or over the mark All colors are onWhite light spot visible

All LEDs flash

Press the teach button approx. 0.5s Changeover to red, green or blueRed, green or blue light spot visible

ON (green) illuminatedQ/T (yellow) offQ/T (yellow) flashing (error)


All colors off ON (green) illuminatedQ/T (yellow) flashing (error)

Selection table

Order code

Equipment KR

TM

20M

/N-2

0-00

84-S

12P

art

no. 5

0119

540

Scanning range (in focus mode)

11mm18mm 44mm

Transmitter color RGB green


Optical outlet FrontHead

Output wiring PNPNPN analogue current

Other features cut-marking system can store 128 data records dynamic teach-in teach-in, backgroundsynchronous input

Pulse > 200ms opens the teach window

Rising edge closes the teach window

Pulse < 2ms

KRTM 20M/N-20-0084-S12


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