(I)PRK 18 Retro-reflective photoelectric sensors with polarization filter

Dimensioned drawing
en 07-2012/06 50109446-01

0 … 4m

10 - 30 V Tracking
PET
DC
Glas

 Intelligent sensor for detection of transpar-

ent objects (e.g. clear glass, PET, foil)
 Automatic contamination compensation
(tracking function) for longer intervals
between cleanings
 Adjustment via teach-in
We reserve the right to make changes • DS_IPRK18xxDL4x_en_50109446-01.fm

A Step switch for object adjustment

B Indicator diodes
C Optical axis

Electrical connection
C UL US
LISTED

IP 69K
IEC 60947... IEC 60947... IP 67

Accessories:
(available separately)
 Mounting system (BT 95)
 M12 connectors (KD …)
 Reflectors
PIN 1 PIN 2 PIN 3 PIN 4 PIN 5
PRK 18/24 DL.46 + NPN GND PNP L/D
PRK 18/24 DL.42 + NPN GND PNP Teach
PRK 18/44 L.43 + PNP GND PNP Teach
IPRK 18/4 DL.41 + Warn GND PNP L/D
IPRK 18/2 DL.41 + Warn GND NPN L/D
IPRK 18/4 DL.43 + Warn GND PNP Teach

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. +49 (0) 7021 573-0 IPRK 18… - 07
info@leuze.com • www.leuze.com PRK 18/24… - 07
 (I)PRK 18

Specifications Tables
Optical data Reflectors Operating range
Typ. operating range limit (TK(S) 100x100)1) 0 … 4m
Operating range 2) see tables 1 TK(S) 100x100 0 … 3.0m
Recommended reflector MTKS 50x50.1 2 MTKS 50x50.1 0 … 2.4m
Light source LED (modulated light)
3 TK(S) 30x50 0 … 1.6m
Wavelength 660nm (visible red light, polarized)
4 TK(S) 20x40 0 … 1.4m
Timing 5 Tape 6 50x50 0 … 2.0m
Switching frequency 1kHz
Response time 0.5ms 1 0 3.0 4.0
Delay before start-up ≤ 300ms 2 0 2.4 3.0
3 0 1.6 2.0
Electrical data
Operating voltage UB 10 … 30VDC (incl. residual ripple) 4 0 1.4 1.8
Residual ripple ≤ 15% of UB 5 0 2.0 2.2
Open-circuit current ≤ 35mA
Switching output see section 6. Preferred types Operating range [m] *)
Warning output see section 6. Preferred types Typ. operating range limit [m] *)
Function characteristics see section 6. Preferred types *) for sensitivity setting at switch position 3
Signal voltage high/low 3) ≥ (UB -2V)/≤ 2V
Output current max. 2x100mA TK … = adhesive
Sensitivity see section 6. Preferred types TKS … = screw type
Tape 6 = adhesive
Switch positions
Position teach-in activation of the teach event
Position 1 (PET bottle) operating point PET bottle Diagrams
Position 2 (clear glass bottle) operating point clear glass bottle
Typ. object gap
Position 3 (colored glass bottle) operating point colored glass bottle (MTKS 50x50.1 at 400mm)
Position Auto Tracking ON/OFF
10
A
Indicators 9
B

Gap size y [mm]

8
Green LED, continuous light ready 7 C
Green LED, flashing teach mode active with performance reserve 6
5
Red LED, continuous light operation without performance reserve 4
Red LED, flashing teaching without performance reserve 3
2
Green/red LED flashing device defective, no performance reserve 1
LED 1, yellow light path free 0
0 100 200 300 400
LED 2, yellow tracking ON Distance x [mm]
Mechanical data A Switch position 1
Housing diecast zinc B Switch position 2
Optics cover glass C Switch position 3
Weight 150g
Connection type M12 connector, 5-pin, stainless steel
Environmental data y

Ambient temp. (operation/storage) -25°C … +55°C/-40°C … +70°C x

Protective circuit 4) 2, 3
VDE safety class III
Protection class IP 67, IP 69K 5) Remarks
LED class 1 (acc. to EN 62471) Objects Switch
Standards applied IEC 60947-5-2 position
Options Multilayer foil, PET bottles, 1
Teach input see section 6. Preferred types transparent glass pane
Active/not active edge from 0V to UB/0V or not connected Clear glass bottle 2
Teach delay < 500ms Colored glass bottle 3
L/D input see section 6. Preferred types
Dark/light switching UB/0V or not connected  Teach event may only be per-
L/D delay < 500ms formed with free light path.
Warning output warn see section 6. Preferred types  A change of the operating point
Signal voltage high/low ≥ (UB -2V)/≤ 2V is always possible and does not
Output current max. 100mA require a new teach-in.
1) Typ. operating range limit: max. attainable range without performance reserve  The red LED signalizes an inse-
2) Operating range: recommended range with performance reserve cure operating state. The
3) Functional extra-low voltage with reliable disconnection or protective extra-low voltage (VDE 0100/T 410) warning output is set.
4) 2=polarity reversal protection, 3=short circuit protection for all outputs  For activation of the single
5) IP 69K test acc. to DIN 40050 part 9 simulated, high pressure cleaning conditions without the use of additives, functions you have to remain in
acids and bases are not part of the test the respective switch position
for approx. 2ms.
Approved purpose:  In switch positions "Teach" and
This product may only be used by qualified personnel and must only be used for the approved "Auto" the switching outputs
purpose. This sensor is not a safety sensor and is not to be used for the protection of persons. are active.
 Warning output:
static signal for control limit
reached.
 The light spot may not exceed
Order guide the reflector.
 Preferably use MTK(S) or
See section 6. Preferred types tape 6.
 For foil 6 the sensor's side edge
must be aligned parallel to the
side edge of the reflective tape.

IPRK 18… - 07 2012/06

PRK 18/24… - 07
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1. Operating principle of contamination compensation (tracking function)

This transparency sensor (clear glass sensor) is a device which automatically compensates system contamination at the reflector
and sensor by means of continuous measurement of the receiving level. The control rate depends on the number of gaps in the
process. This tracking function increases the interval between cleaning sessions considerably.
The control limit is indicated by a warning output. The sensor does not need to be re-calibrated after the system has been
cleaned. In typical applications, cleaning can be performed during system operation. This means higher system efficiency.
The system is calibrated ("teach-in") once only at initial commissioning. The appropriate object is then selected (PET, clear glass
or colored glass). The "teach-in" process does not have to be performed again if a different object is selected.

2. Controls and indicators

a Light path free (LED 1 yellow)

b Operation and teach indicator (LED green/red)
c Tracking ON (LED 2 yellow)
d Switch position tracking
e Switch position 3 (colored-glass bottle)
f Switch position 2 (clear-glass bottle)
g Switch position 1 (PET bottle, glass pane, foil)
h Switch position Teach

3. Adjustment procedure (teach-in) via step switch

Correct adjustment procedure: Important to note:
1. There must be no objects in the beam The teach-in procedure must be
Reflector path between the retro-reflective photo- conducted without any objects!
STO
P electric sensor and the reflector during
the adjustment procedure.

Retro-reflective-
2. Align the sensor with the reflector so The light spot must not fall outside the
photoelectric sensor that the light spot is visible in the middle reflector area. The mounted reflector
of the reflector. should always be larger than the visible
light spot!
Important during teach-in:
free light path!

3. Turn the step switch to the "Teach" The adjustment procedure must be
switch position for about 2s. conducted without objects!
4. Turn the step switch back to switch
see 3.) positions 1, 2 or 3.
see 4.) 5. To turn the tracking function on/off, turn The step switch must be turned to switch
the step switch to the "Auto" switch positions 1, 2 or 3 during operation!
position for about 2s.
6. Turn the step switch back to switch
positions 1, 2 or 3.

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. +49 (0) 7021 573-0 IPRK 18… - 07
info@leuze.com • www.leuze.com PRK 18/24… - 07
 (I)PRK 18

4. Setting operating mode

Object to be detected Material, e.g.: Switch position Correct adjustment procedure:
Transparent objects  PET bottle 1. Turn the step switch to the "Teach" switch
 PEN bottle 1 Teach position for about 2s.
 Clear plate glass 2. Turn the step switch back to switch
2 position 1.
 Foil
3 Auto
Tracking can be turned on or off by switching
to the "Auto" switch position.
Less transparent objects  Clear glass bottle 1. Turn the step switch to the "Teach" switch
 Colored plate position for about 2s.
1 Teach
glass 2. Turn the step switch back to switch
2
position 2.

3 Auto Tracking can be turned on or off by switching

to the "Auto" switch position.

Opaque objects  Colored glass 1. Turn the step switch to the "Teach" switch
bottle position for about 2s.
1 Teach
 Opaque objects 2. Turn the step switch back to switch
2
position 3.

3 Auto Tracking can be turned on or off by switching

to the "Auto" switch position.

5. Calibration procedure (teach-in) by cable

1. Set step switch to desired operating mode (PET, clear-glass or colored-glass bottle).
2. Activate teach-in cable (pin 5) (high active). Teach event takes max. 1s.
3. Deactivate teach-in cable (pin 5).

6. Preferred types
l
Part no. 50032798

Part no. 50033554

Part no. 50115193

Part no. 50033552

Part no. 50033553

Part no. 50109415

Selection table
PRK 18/24 DL.46

PRK 18/24 DL.42

IPRK 18/4 DL.41

IPRK 18/2 DL.41

IPRK 18/4 DL.43

PRK 18/44 L.43

Order code 

Equipment 
Application PET      
clear glass      
colored glass      
Switching outputs 2 PNP transistors   
2 NPN transistors 
1 NPN + 1 PNP transistor  
Function characteristics antivalent 
light switching   
dark switching     
Configuration step switch      
Options contamination compensation (step tracking)      
cleaning compensation (peak tracking)      
tracking ON/OFF      
warning output   
Teach-in via step switch      
Teach via control cable   
light/dark switching via control cable   
UL     

IPRK 18… - 07 2012/06

PRK 18/24… - 07