Leuze KRT18BW 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_KRT18BW_3_en_50145096.fm
White light transmitter
Maximum packing quality through short
response time
Automatic luster suppression
Multiple teach modes in one device
13mm
Accessories:
(available separately)
Mounting systems
(BTU 200M…, BT 95)
Mounting adapter for standard design
(80 mm x 53 mm x 30 mm) BTX 018M
Cable with M12 connector
(K-D M12…)
Dimensioned drawing
AIndicator diodes
BTeach buttons
CDisplay of the special functions
DOptical axis
EHorizontal light spot orientation (transverse)
FLight spot orientation vertical (lengthwise)
Electrical connection
BRBR
/
BNBN
OUTOUT 2
GND
GND
OUTOUT 1
12
12 - 3030 V +
n.
n. c.c.
WSWS
/
WHWH
BLBL
/
BUBU
SWSW/ BKBK
GRGR
/
GYGY
KRT18BW White light contrast sensor
KRT18BW. …3… - 01
en 2020/10/13 50145096

KRT18BW. …3… - 01 2020/10/13
Technical data
Optical data
Operating range 13mm ± 3mm
Light source 1)
1) Average life expectancy 100,000h at an ambient temperature of 25°C
White LED
Light spot dimensions 1mm x 4mm (at a distance of 13 mm)
Light spot orientation Vertical (lengthwise) or horizontal (transverse)
Time behavior
Switching frequency 15kHz
Response time 33µs
Conveyor speed
(during dyn. 2-point teach)
≤0.1m/s (with 1mm mark width)
Readiness delay < 300ms
Electrical data
Operating voltage UB 2)
2) For UL applications: use is permitted exclusively in Class 2 circuits according to NEC
12 … 30VDC (incl. residual ripple)
Residual ripple ≤15 % of UB
Open-circuit current 25mA (at 24V)
Switching outputs/functions OUT1 Push-pull switching output (high signal on mark)
OUT2 Push-pull switching output (low signal on mark)
Signal voltage high/low ≥(UB-2V)/≤2V
Output current Max. 100mA
Indicators
Green LED continuous light Ready
Yellow LED continuous light Mark detected
Green and yellow LED flashing (2Hz) Teach-in active
Green and yellow LED flashing (8Hz) Teach error
Yellow LEDs - special functions Light/dark switching
Mechanical data
Housing Diecast zinc, chemically nickel-plated
Connector Diecast zinc, chemically nickel-plated
Optics PMMA
Operation 2 teach buttons for mark (M) and background (B)
Weight 60g
Connection type M12 connector, 5-pin
Environmental data
Ambient temp. (operation/storage) -40°C … +60°C/-40°C … +70°C
Protective circuit 3)
3) 2=polarity reversal protection, 3=short circuit protection for all transistor outputs
2, 3
VDE protection class 4)
4) Rating voltage 50V
III
Degree of protection IP67, IP 69K
Light source Exempt group (in acc. with EN 62471)
Standards applied IEC 60947-5-2
Certifications UL 508, C22.2 No.14-13 2) 5) 6) 7) 8)
5) These proximity switches shall be used with UL Listed Cable assemblies rated 30V, 0.24A min,
in the field installation, or equivalent (categories: CYJV/CYJV7 or PVVA/PVVA7)
6) For use in NFPA 79 applications only.
7) Adapters providing field wiring means are available from the manufacturer. Refer to manufacturers information.
8) Caution – Use of controls or adjustments or performance of procedures other than specified herein may result in
hazardous light exposure.
Chemical resistance Tested in accordance with ECOLAB
Additional functions
2 teach processes Static teach on background and mark
Dynamic teach on background and mark
Light/dark switching (L/D) Can be activated via control button
KRT18BW
Notes
Glossy objects:
With glossy objects, the
sensor is to be fastened
at an inclination of
approx. 10° … 15° rela-
tive to the object surface.
Alignment aid:
An alignment aid is
included in the scope of
delivery of each sensor.
This facilitates simple
alignment of the sensor to
the working distance of
13 mm without needing to
perform electrical
commissioning.
Observe 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
accordance with its intended
use.
10°…15°
13 mm
13 mm

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] KRT18BW. …3… - 01
[email protected] • www.leuze.com
Part number code
KRT18BW. H3 / G6X -M12
Operating principle
KRT Contrast sensor
Series
18B 18B series
Light source
W White light LED
Light spot orientation
H Horizontal (transverse)
V Vertical (lengthwise)
Setting
3 Teach-in
Pin assignment of connector pin 4 / black cable wire (OUT1)
G Push-pull switching output, PNP active on mark, NPN active on background
Pin assignment of connector pin 2 / white cable wire (OUT2)
6 Push-pull switching output, PNP active on background, NPN active on
mark
Pin assignment of connector pin 5 / gray cable wire
X No contact (n. c. - not connected)
Connection technology
M12 M12 connector, 5-pin
KRT18BW White light contrast sensor

KRT18BW. …3… - 01 2020/10/13
Order guide
The sensors listed here are preferred types; current information at www.leuze.com
Mounting adapter BTX 018M
With the help of mounting adapter BTX 018M (part no. 50133412), contrast sensors KRT18B… can be mounted on existing mounting
devices for contrast sensors in the standard design (80mm x 53mm x 30mm).
Order code Part no. Features
KRT18BW.H3/G6X-M12 50145016 Light spot orientation horizontal (transverse),
selectable additional function: light/dark switching
Accessories
BTX 018M 50133412 Mounting adapter for mounting on mounting devices for sensors in the standard design (80 mm x 53 mm x 30 mm)
KRT18BW

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] KRT18BW. …3… - 01
[email protected] • www.leuze.com
Sensor setting via teach button
Static 2-point teach
Suitable for manual positioning of the marks.
The static 2-point teach can be performed in the reverse order in an analogous manner (first teach the mark).
Dynamic 2-point teach
Suitable for applications in which the mark can be positioned under the light spot only with great effort.
Position the background. Press the B button (background) for
2 … 7s and release.
Position the mark. Briefly press the M button (mark)
and release.
Value for background is accepted.
LEDs flash synchronous (2Hz).
Value for mark is accepted.
Sensor in RUN mode.
In the event of a teaching error
(insufficient contrast between back-
ground and mark), the LEDs flash
rapidly (8 Hz). Press button again to
reset.
Position the background. Press the B button (background)
button for 7 … 12s and release.
Allow marks to pass through dynamically. Briefly press the M button (mark)
and release.
Measurement window opens.
LEDs flash alternately (2Hz).
Measurement window closes.
Sensor in RUN mode.
In the event of a teaching error
(insufficient contrast between back-
ground and mark), the LEDs flash
rapidly (8 Hz). Press button again to
reset.
>12s
L/D
Background
>12s
L
/
D
2…7s
>12s
L/D
Mark
>12s
L
/
D
>12s
L/D
Background
>12s
L
/
D
7…12s
>12s
L/D
>12s
L
/
D
KRT18BW White light contrast sensor

KRT18BW. …3… - 01 2020/10/13
Fine tuning the switching threshold
The KRT18B… contrast sensor enables fine adjustment of the switching threshold to optimally adapt the sensor to the application.
The fine adjustment should be performed only after a teach-in.
L/D – Light/dark switching
Briefly pressing the ’–’ button reduces the sensitivity of the sensor. In the
case of dark marks on a light background, the button must then be
pressed once or twice if the mark is not reliably detected.
Briefly pressing the ’+’ button increases the sensitivity of the sensor. In
the case of dark marks on a light background, the button must then be
pressed once or twice if the sensor switches erroneously at locations on
the background.
Press the B button longer than 12s. Release the button. To change the setting again, press the B
button again for longer than 12 s and release.
Only the green LED flashes.
>12s
L
/ D
Button ’–’
>12s
L
/ D
Button ’+’
>12s
L
/
D
>12s
>12s
L
/ D
>12s
L
/ D
LED off =
OUT1 (Pin 4): high signal on mark
OUT2 (Pin 2): low signal on mark
LED on =
OUT1 (Pin 4): low signal on mark
OUT2 (Pin 2): high signal on mark
>12s
L
/
D
>12s
KRT18BW