Leuze electronic KRTL 3B User manual

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone]
[email protected] • www.leuze.com
We reserve the right to make changes • DS_KRTL3B_en_50110624_03.fm
Red light laser transmitter
Various teach variants
Small light spot
Switching threshold adjustment via
EasyTune
Level adaptation for glossy objects
Keyboard lockout
Remote teach via cable
Pulse stretching 20ms
60mm
10 - 30 V
DC
Accessories:
(available separately)
Mounting systems (BT 3…)
Cable with M8 or M12 connector (K-D …)
IEC 60947...
IEC 60947...
IP 67
Dimensioned drawing
AGreen indicator diode
BYellow indicator diode
CLight spot orientation horizontal
DLight spot orientation vertical
ETransmitter
FReceiver
GOptical axis
HTeach button
JAttachment sleeve
Electrical connection
Plug connection, 4-pin Cable, 4-wire
KRTL 3B Laser contrast scanner
KRTL 3B… - 06
en 06-2016/08 50110624-03

KRTL 3B… - 06 2016/08
Specifications
Optical data
Scanning range 1)
1) Scanning range: recommended range with performance reserve
60mm ± 20mm
Light spot dimensions 0.5mm x 1.0mm (at a distance of 60mm)
Light spot orientation vertical (see dimensioned drawing)
Light source 2)
2) Average life expectancy 50,000h at an ambient temperature of 25°C
laser-generated red light (laser class 1)
Wavelength 655nm
Max. output power 1mW
Pulse duration 4μs
Sensor operating modes
IO-Link COM2 (38.4kBaud)
SIO standard push-pull
Dual Core no
Timing of the sensor
Internal switching frequency 4kHz
Internal response time 125μs
Response jitter, internal 35μs
Repeatability 3)
3) At conveyor speed 1 m/s
0.05mm
Delay before start-up ≤300ms
Teach process static 1-point, static 2-point or dynamic 2-point
Teach delay ≤10ms
Timing of the outputs
Response time Pin 4 IO-Link COM2: acc. to IO-Link specification (typically 2.5ms)
SIO: 50μs
Electrical data
Operating voltage UB4) with SIO
with COM2
4) For UL applications: for use in class 2 circuits according to NEC only
10 … 30VDC (incl. residual ripple)
18 … 30VDC (incl. residual ripple)
Residual ripple ≤15% of UB
Output/function …/2…
…/4…
…/6…
…/6…
pin 4: GND if mark detected
pin 4: UBif mark detected
pin 4: IO-Link SIO mode, UBif mark detected
pin 4: IO-Link COM2 mode, see configuration file IODD
Signal voltage high/low ≥(UB-2V)/≤2V
Output current max. 100mA
Open-circuit current ≤20mA
Indicators
Green LED in continuous light ready
Green and yellow LED flashing at 3Hz teach event active
Green and yellow LED flashing at 8Hz teaching error
Green LED off and yellow LED flashing
at 8Hz
device error
Yellow LED in continuous light mark detected (dependent on the teach sequence)
Yellow LED flashing at 8Hz laser error, replace device
Transmitter LED flashing at 8Hz teaching error
Mechanical data
Housing plastic (PC-ABS), with attachment sleeve, nickel-plated steel
Optics cover plastic (PMMA)
Weight with connector: 20g
with 200mm cable and connector: 40g
with 2m cable: 50g
Connection type 2m cable (cross section 4x0.20mm²),
connector M8 metal,
0.2m cable with connector M12
Environmental data
Ambient temp. (operation/storage) -10°C … +55°C / -30°C … +70°C
Protective circuit 5)
5) 2=polarity reversal protection, 3=short-circuit protection for all transistor outputs
2, 3
VDE safety class III
Protection class IP 67
Laser class 1 (in accordance with EN 60825-1)
Standards applied IEC 60947-5-2
Certifications UL 508, C22.2 No.14-13 4) 6)
6) 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)
Options
Input pin 2
Function characteristics keyboard lockout / line teach / pulse stretching
Input active/not active ≥8V/≤2V or not connected
Output pin 4
Line teach active for SIO
for COM2
2Hz at the switching output
see configuration file IODD
Error after line teach for SIO
for COM2
2Hz at the switching output
see configuration file IODD
Remarks
With glossy objects, the
sensor is to be fastened at
an inclination of
approx. 10° relative to the
object surface.
UL REQUIREMENTS
Enclosure Type Rating: Type 1
For Use in NFPA 79 Applications
only.
Adapters providing field wiring
means are available from the manuf-
acturer. Refer to manufacturers in-
formation.
CAUTION – the use of controls or
adjustments or performance of
procedures other than those spe-
cified herein may result in hazar-
dous radiation exposure.
ATTENTION ! Si d'autres disposi-
tifs d'alignement que ceux préco-
nisés ici sont utilisés ou s'il est
procédé autrement qu'indiqué,
cela peut entraîner une exposition
à des rayonnements et un danger
pour les personnes.
Operate in accordance with
intended use!
This product is not a safety sensor
and is not intended as personnel
protection.
The product may only be put into
operation by competent persons.
Only use the product in accor-
dance with the intended use.
10 °
KRTL 3B

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] KRTL 3B… - 06
[email protected] • www.leuze.com
Order guide
Laser safety notices – Laser class 1
Selection table
Order code 
Equipment 
KRTL 3B/6.3111-S8 Part no. 50111321 KRTL 3B/4.3111-S8 Part no. 50110592 KRTL 3B/2.3111-S8 Part no. 50110593 KRTL 3B/4.3111,200-S12 Part no. 50110594 KRTL 3B/2.3111,200-S12 Part no. 50110595 KRTL 3B/4.3111 Part no. 50134932
Transmitter color white light
RGB (red, green, blue)
laser-generated red light (laser class 1) 
Light spot orientation vertical 
horizontal
round
Output (OUT 1) PNP transistor output 
NPN transistor output 
push-pull switching output 
IO-Link COM2 
Input (IN) teach input 
Housing standard 
economy
Connection M8 connector, metal 4-pin 
M8 connector, plastic 4-pin
200mm cable with M12 connector 4-pin 
2000mm cable 4-wire 
Teach-in method static 1-point
static 2-point 
dynamic 2-point
Response time /
Switching frequency
50μs / 10kHz
83μs / 6kHz
125μs / 4kHz 
Configuration switching threshold adjustment with EasyTune via teach button 
remote teach, keyboard lockout and pulse stretching via pin 2 
teach level 1, teach-level 2 and pulse stretching via teach button 
ATTENTION, LASER RADIATION – LASER CLASS 1
The device fulfills the EN 60825-1:2008-05 (IEC 60825-1:2007) safety regulations for a product in laser class 1 as well as the
U.S. 21 CFR 1040.10 regulations with deviations corresponding to "Laser Notice No. 50" from June 24th, 2007.
Adhere to the applicable legal and local regulations regarding protection from laser beams acc. to EN 60825 (IEC 60825) in its latest
version.
The device must not be tampered with and must not be changed in any way.
There are no user-serviceable parts inside the device.
Repairs must only be performed by Leuze electronic GmbH + Co. KG.
KRTL 3B Laser contrast scanner

KRTL 3B… - 06 2016/08
IO-Link process data
The sensor transmits 2 bytes to the master.
Additional information on the IO-Link service data is available on request.
Static 2-point teach
Suitable for manual positioning of the marks (availability dependent on device type).
Switching threshold in center:
Switching threshold near the mark:
Data bit Assignment Default settings
1514131211109876543210
Switching output 0 = no mark, 1 = mark detected
Not used Free
Sensor operation 0 = off, 1 = on
Switching threshold LSB
Value range 0 … 31
(0 … 100% in approx. 3% steps)
0% = min. switching threshold
100% = max. switching threshold
Switching threshold
Switching threshold
Switching threshold
Switching threshold MSB
Active transmitter LSB 00 = red,
01 = green or white,
Active transmitter MSB 10 = blue,
11 = all colors on (teach-in active)
Not used Free
Measurement value LSB
Value range 0 … 31
(0 … 100% in approx. 3% steps)
0% = min. signal level
100% = max. signal level
Measurement value
Measurement value
Measurement value
Measurement value MSB
Position the background. Press teach button for
2 … 7s and release.
LEDs flash
simultaneously.
Position the mark. Briefly press teach
button.
Device in RUN mode.
Yellow LED illuminates.
Value for background
is accepted.
Simultaneous
flashing
Value for mark is
accepted.
Switching threshold set
in the center.
Position the background. Press teach button for
7 … 12s and release.
LEDs flash
alternatingly.
Position the mark. Briefly press teach
button.
Device in RUN mode.
Yellow LED illuminates.
Value for background
is accepted.
Alternating
flashing
Value for mark is
accepted.
Switching threshold is
set near the mark.
2…7s
7…12s
KRTL 3B

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] KRTL 3B… - 06
[email protected] • www.leuze.com
Dynamic 2-point teach
Suitable for marks moved during automated machine processes (availability dependent on device type).
Switching threshold in center
Switching threshold near the mark
Static 1-point teach
Suitable for detecting all marks outside of the reference value (availability dependent on device type).
Standard sensitivity
High sensitivity
Position the background. Press teach button for
2 … 7s and release.
LEDs flash
simultaneously.
Allow marks to pass through
dynamically.
Briefly press teach
button.
Device in RUN mode.
Yellow LED is off.
Measurement window
opens.
Simultaneous
flashing
Measurement window
closes.
Switching threshold set
in the center.
Position the background. Press teach button for
7 … 12s and release.
LEDs flash
alternatingly.
Allow marks to pass through
dynamically.
Briefly press teach
button.
Device in RUN mode.
Yellow LED is off.
Measurement window
opens.
Alternating
flashing
Measurement window
closes.
Switching threshold is
set near the mark.
Position the reference value. Press teach button for
2…7s.
LEDs flash simultane-
ously.
Release teach button. Device in RUN mode.
Yellow LED is off.
Simultaneous
flashing
Value is accepted. Standard sensitivity is
set.
Position the reference value. Press teach button for
7…12s.
LEDs flash
alternatingly.
Release teach button. Device in RUN mode.
Yellow LED is off.
Alternating
flashing
Value is accepted. High sensitivity is set.
2…7s
7…12s
2…7s
7…12s
KRTL 3B Laser contrast scanner

KRTL 3B… - 06 2016/08
Switching threshold diagrams
Static 2-point teach
Dynamic 2-point teach
Static 1-point teach
Label with marks
1. Teach point on background 2. Teach point on mark
Switching threshold in center
Receive signal
Switching output for
switching threshold in center
Switching output for
switching threshold near the mark
Switching threshold near the mark
Label with marks
Open measurement window Close measurement window
Switching threshold in center
Receive signal
Switching output for
switching threshold in center
Switching output for
switching threshold near the mark
Switching threshold near the mark
Label with marks
Teach reference value
Standard
sensitivity
Receive signal
Switching output for
standard sensitivity
Switching output for
high sensitivity
High
sensitivity
KRTL 3B

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] KRTL 3B… - 06
[email protected] • www.leuze.com
Pulse stretching option
Switching pulse stretching on or off:
"EasyTune" option - fine tuning of the switching threshold
Following power-on and completed teach event: Green LED illuminates continuously (ready)
Yellow LED on/off continuously (mark detected/not detected)
Increasing the switching threshold:
Reducing the switching threshold:
If the upper or lower end of the adjustment range is reached, the green and yellow LEDs flash at a considerably higher fre-
quency of 8Hz for the duration of one second.
Press the teach button
longer than 12s.
Only the green LED flashes. Release teach button.
After releasing the button,
the yellow LED displays the state:
yellow LED on:pulse stretching ON
yellow LED off:pulse stretching OFF
Change is accepted.
Long press of the button =
large force expenditure =
increase switching
threshold
Each press of the button with
a duration between 200ms
and 2s increments the
switching threshold.
A press of the button is acknowledged by a
single, brief flash of the green LED – the
new switching threshold is now valid.
Short press of the button =
small force expenditure =
reduce switching threshold
Each press of the button with
a duration between 2ms and
200ms decrements the swit-
ching threshold.
A press of the button is acknowledged by a
single, brief flash of the green LED – the
new switching threshold is now valid.
>12s
The pulse stretching is switched
off
The pulse stretching is switched
on
Label with marks
Receive signal
1. Teach point on background 2. Teach point on mark
2-point teach
1-point teach
Switching threshold
Increase the swit-
ching threshold
Label with marks
Receive signal
Teach reference value
Switching threshold
Increase the swit-
ching threshold
200ms … 2s
Green LED flashes briefly once
Label with marks
Receive signal
1. Teach point on background 2. Teach point on mark
2-point teach
1-point teach
Switching threshold Reduce the swit-
ching threshold
Label with marks
Receive signal
Teach reference value
Switching threshold
Reduce the swit-
ching threshold
2ms … 200ms
Green LED flashes briefly once
KRTL 3B Laser contrast scanner

KRTL 3B… - 06 2016/08
Sensor adjustments via the input IN (Pin 2)
The following description applies to PNP switching logic!
Signal level LOW ≤2V
Signal level HIGH ≥(UB-2V)
With the NPN models, the signal levels are inverted!
Switching threshold in center / standard sensitivity
Switching threshold near the mark / high sensitivity
Pulse stretching ON
Pulse stretching OFF
Locking the teach button via the input IN (Pin 2)
A static HIGH signal (≥20ms) at the teach input
locks the teach button on the device if required,
such that no manual operation is possible (e.g.,
protection from erroneous operation or manipu-
lation).
If the teach input is not connected or if there is a
static low signal, the button is unlocked and can
be operated freely.
LOW
t = 20 ... 80 ms
t
HIGH
Accept 1st teach value
(background, reference value / open measurement window)
Accept 2nd teach value
(mark / close measurement window)
LOW
t = 120 ... 180 ms
t
HIGH
Accept 1st teach value
(background, reference value / open measurement window)
Accept 2nd teach value
(mark / close measurement window)
LOW
t = 220 ... 280 ms
t
HIGH
LOW
t = 320 ... 380 ms
t
HIGH
KRTL 3B