Laser retro-reflective photoelectric sensors
PRK3CLA Autokollimation
We reserve the right to make changes – 2018/10 – 50137135-01
Leuze electronic GmbH + Co. KG
info@leuze.com
www.leuze.com•
In der Braike 1 D-73277 Owen Tel.: +49 (0) 7021 573-0
1Bildteil
1
LOW
t = 20 ... 80 ms
t
HIGH
A
B
C
2
LOW
t = 120 ... 180 ms
t
HIGH
A
B
C
3
LOW
t = 220 ... 280 ms
t
HIGH
4
LOW
t = 320 ... 380 ms
t
HIGH
526
A
B
3
EN
General information
– The laser retro-reflective photoelectric sensors PRK3CL… have an opti-
mized light beam propagation in the typical range of application of 0…1 m
(not to be confused with the operating range limit, which is 0…3 m in combination with a reflector MTKS50x50.1). This permits the reliable recognition
of the smallest of parts or the positioning of objects with maximum precision
across the entire area.
– For film6, the sensor's side edge must be aligned parallel to the side edge
of the reflective tape.
– The sensor is constructed on the basis of the autocollimation principle, i.e.,
light being transmitted and light being received propagate along the same
light axis. This permits the photoelectric sensor to be installed directly behind
small holes or diaphragms. The smallest permissible diaphragm diameter for
secure functioning is 3mm.
– The achievable resolution depends significantly on the device setting. De-
pending on the teach mode, the following values are possible:
Setting Detection from object size
Max. operating range (factory setting) 1.5mm
Standard teach (low sensitivity) 1mm
Sensitive teach (increased sensitivity) 0.1…0.2mm
1)
All specifications are typical values and may vary by a small amount for each
unit.
Sensor adjustment (teach) via teach button
The sensor is factory-adjusted for maximum operating range. The teach procedure is only necessary if the sensor does not switch when an object enters the
light beam.
(1) Standard teach (low sensitivity) (2) Sensitive teach (increased sensitiv-
Clear the light path before teaching!
1 Hold down the teach button (2to7
s) until the yellow and green LEDs
flash simultaneously.
2 Release teach button – ready. 2 Release teach button – ready.
After teaching for normal sensor sensitivity, the sensor switches for objects
with a minimum size of 1mm (see table
under "General Information").
If both LEDs flash rapidly after the teach event, a teaching error has happened.
Check the alignment of the light beam onto the reflector and carry out another
4
ity)
1 Hold down the teach button (7to12
s) until the yellow and green LEDs
flash alternately.
After teaching for increased sensor sensitivity, the sensor switches for objects
with a minimum size of 0.1…0.2mm
(see table under "General Information").
teach.
1)
Device settings are stored fail-safe.
1
EN
(3) Teach at max. operating range (factory setting)
Obstruct the light path before teaching! When the function is activated, the
1 Hold down the teach button (2to7
s) until the yellow and green LEDs
flash simultaneously.
2 Release teach button – ready. 2 Release teach button – ready.
The sensor now operates with the maximum function reserve/operating range.
Device settings are stored fail-safe.
(4) Set switching behavior (light/dark
switching)
switching output is always inverted relative to the previously set state.
1 Hold down the teach button longer
than 12s until only the green LED
flashes.
– LED ON: switching output now
light switching (output active if
light path is free)
– LED OFF: switching output
now dark switching (output active if object in light path)
Note: The yellow LED is not dependent
on the switching behavior setting and
always indicates light switching in normal operation.
Sensor adjustment (teach) via teach input (pin2)
This device setting is only available for sensors in the PRK3CL…A3/…T… variant.
NOTICE
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!
Standard teach (low sensitivity)
A Standard teach (low sensitivity) is performed
B Teach button is locked
C Teach button may now be operated again
5
2
3
4
5
6
EN
Sensitive teach (increased sensitivity)
A Sensitive teach (increased sensitivity) is performed
B Teach button is locked
C Teach button may now be operated again
Light switching logic
Switching outputs are light switching, i.e., outputs are active, when there is no ob-
ject currently in the light path.
With antivalent switching outputs: OUT1 (pin4) light switching, OUT2 (pin2)
dark switching.
Dark switching logic
Switching outputs are dark switching, i.e., outputs are active, when there is an ob-
ject currently in the light path.
With antivalent switching outputs: OUT1 (pin4) dark switching, OUT2 (pin2)
light switching.
Locking the teach button via the teach input
This device setting is only available for sensors in the PRK3CL...A3/...T... variant
(teach input via pin 2).
A static high signal (≥20 ms) at the teach input locks the teach button on the sensor if required, such that no manual operation is possible (e.g., protection from erroneous operation or manipulation).
If the teach input is not connected or if there is a static low signal, the button is unlocked and can be operated freely.
A Diaphragm diameter ≥ 3mm
B Typ. application range 0…1m
6
EN
IO-Link interface
Sensors in the PRK3C…/L… variant have a dual-channel architecture. The IOLink interface is available in accordance with specification 1.1.2 (July 2013) on pin
4 (OUT1). You can easily, quickly and economically configure the devices via the
IO-Link interface. Furthermore, the sensor transmits the process data via the IOLink interface and makes diagnostic information available through it.
Parallel to the IO-Link communication, the sensor can output the continuous
switching signal for object detection on OUT2. The IO-Link communication does
not interrupt this signal.
NOTICE
In the
Sensor Studio
regard to the designations: Q1 = OUT1, Q2 = OUT2.
The sensors offer no data retention and no ISDU support. The device can only be
identified via VendorID and DeviceID.
IO-Link identification
VendorID dec/hex DeviceID dec/hex Device
338/0x152 2119/0x000847 PRK3CL1.A3/LP
IO-Link process data
Device output data
Data bit Assignment Meaning
0 Switching output Q1
1 Warning output autoCon-
2 Sensor operation 0 = off, 1 = on
3 Not assigned Free
4 Not assigned Free
5 Not assigned Free
6 Not assigned Free
7 Not assigned Free
(OUT1)
trol
configuration software, the following applies with
0 = inactive, 1 = active
0 = no warning, 1 = warning
Sensor operation off when detection is
not possible (e.g during the teach event).
7
EN
Device input data
Data bit Assignment Meaning
0 Deactivation 0 = transmitter active, 1 = transmitter in-
1 Not assigned Free
2 Not assigned Free
3 Not assigned Free
4 Not assigned Free
5 Not assigned Free
6 Not assigned Free
7 Not assigned Free
Device-specific IODD
At www.leuze.com in the download area for IO-Link sensors you will find the IODD
zip file with all data required for the installation.
IO-Link parameters documentation
The complete description of the IO-Link parameters can be found in the *.html
files. Double-click on a language variant:
– German: *IODD*-de.html
– English: *IODD*-en.html
Functions configurable via IO-Link
PC configuration and visualization is performed comfortably with the USB-IO-Link
Master SET US2-IL1.1 (part no. 50121098) and the
software (in the download area of the sensor at www.leuze.com).
active
Sensor Studio
configuration
8
Function block Function Description
Configuration
Logical function ofQ2If the function Q2=
Key Lock
L/D switching In the factory setting, outputs Q1 and Q2
Switching delay
Function selection
of the switching delay
Time base of the
switching delay
Factor for the time
base of the switching delay
lected, the switching function corresponds to
the current setting which was selected via
the L/D changeover.
If Q2=
inv. switching output
switching behavior of the output is inverted.
On
disables the teach button on the sensor.
are antivalent switching outputs:
– Light switching: Q1=light switching,
Q2=dark switching.
– Dark switching: Q1=dark switching,
Q2=light switching.
On
activates the internal time function.
Activation of a suitable switching delay is
possible. It is not possible to combine
switching delays.
Possibility of selecting a time base.
To adapt the time base, it is multiplied by
the entered factor. Only whole-number factors from 1to15 are permitted.
switching output
is selected, the
EN
is se-
9
EN
Function block Function Description
Commands
The first four
commands
correspond to
the functions
which can be
performed at
the sensor using the teach
button or the
remote teach
function.
Laser safety notices - laser class1
Sensitive teach
for the detection of
a transparent object (e.g. empty single bottle)
Standard teach
for the detection of
a partially transparent object (e.g. bottle made of colored
glass)
Light switching
Dark switching
Switch the process
data display mode
to analog value
WARNING
LASER RADIATION – LASER CLASS 1
The device satisfies the requirements of IEC60825-1:2007
(EN60825-1:2007) safety regulations for a product of
well as the U.S.21CFR1040.10 regulations with deviations corresponding to "Laser Notice No.50" from June 24, 2007.
Ä Observe the applicable statutory and local laser protection regula-
tions.
Ä The device must not be tampered with and must not be changed
in any way.
There are no user-serviceable parts inside the device.
Ä Repairs must only be performed by Leuze electronic GmbH + Co.
KG.
Clear the light path before activation.
Clear the light path before activation.
Activate to display diagrams on the
tab when using
software.
Sensor Studio
laser class1
Process
configuration
as
10
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