Leuze electronic
PRK 18 Retro-reflective photoelectric sensors with polarisation filter
Dimensioned drawing
0 … 3m
10 - 30 V
DC
l Retro-reflective photoelectric sensor for
safe detection of transparent media
(e.g. clear glass, PE, foil)
l User controlled sensitivity adjustment with
high resolution allows detection of transpar-
ent objects
l The autocollimation principle used ensures
that the device functions reliably over the
entire range (0 … max.)
A Indicator diodes
B Sensitivity adjustment
C Optical axis
Electrical connection
ISO
9001 IP 67
We reserve the right to make changes • 18_b03e.fm
IEC 60947... IEC 60947...
Accessories:
(available separately)
l Mounting system (BT 95)
l M12 connectors (KD …)
l M8 connectors (KD …)
l Ready-made cables (KB …)
l Reflectors
l Reflective tapes
Leuze electronic GmbH + Co. Post-box 1111 D-73277 Owen-Teck Tel. ++49 7021 5730 PRK 18/2/4 DL.4 - 02
http://www.leuze.de RK 18/4 DL.45 - 02
Leuze electronic
PRK 18
Specifications Tables
Optical data PRK 18/4 DL.4
RK 18/4 DL.45
Typ. operating range limit (TK(S) 100x100) 1) 0 … 3m
Operating range 2) see table Reflectors Operating
Recommended reflector MTK(S) 50x50 range
Light source LED (modulated light)
1 TK(S) 100x100 0 … 2.4 m
Wavelength 660nm (visible red light, polarised)
2 MTK(S) 50x50 0 … 2.0 m
Timing 3 TK(S) 30x50 0 … 0.8 m
Switching frequency 1500Hz 4 TK(S) 20x40 0 … 0.8 m
Response time 0.333ms 5 Tape 2 100x100 0 … 0.4 m
Delay before start-up 100ms
Electrical data 1 0 2.4 3.0
Operating voltage UB 3) 10 … 30VDC (incl. residual ripple) 2 0 2.0 2.5
Residual ripple 15% of UB 3 0 0.8 1.0
Bias current 35mA 4 0 0.8 1.0
Switching output PNP transistor 5 0 0.4 0.6
Function characteristics dark or light switching (by reversing the polarity of UB)
Signal voltage high/low (UB -2V)/ 2V Operating range [m] *)
Output current max. 100mA Typ. operating range limit [m] *)
Sensitivity adjustable with 12-turn potentiometer
*) For sensitivity set to operating point 3
Indicators
LED yellow switching output
LED green, slowly flashing operating point 1 clear glass – transition from quickly
flashing to slowly flashing
Diagrams
LED green, quickly flashing operating point 2 coloured glass – transition from cont. Typ. object gap
(MTKS 50x50 at 400mm)
illuminated to quickly flashing
10
LED green, continuous light operating point 3 non transparent media – continuous 9 A
Gap size y [mm]
light 8 B
7 C
Mechanical data 6
5
Housing diecast zinc 4
Optics glass 3
2
Weight 150g 1
Connection type M12 connector, 4-pin, stainless steel 0
0 100 200 300 400
Distance x [mm]
Environmental data
Ambient temp. (operation/storage) -25°C … +55°C/-40°C … +70°C A Operating point 1
Protective circuit 4) 2, 3 B Operating point 2
VDE safety class III C Operating point 3
Protection class IP 67
Standards applied IEC 60947-5-2
1) Typ. operating range limit: max. attainable range without performance reserve y
2) Operating range: recommended range with performance reserve
3) Functional extra/low voltage with reliable disconnection or protective extra-low voltage (VDE 0100/T 410) x
4) 2=polarity reversal protection, 3=short-circuit protection for all outputs
Remarks
Objects Adjustment
(indicator
LED yellow)
Clear glass, operating
PE, foil point 1
Order guide
Selection table
Part No. 500 80153
Part No. 500 81153
Part No. 500 81364
Coloured operating
PRK 18/4 DL.4
PRK 18/2 DL.4
RK 18/4 DL.45
glass point 2
Order codeÍ
Equipment Ï
Application transparent media l l l Opaque operating
objects point 3
foils > 5µm l
Switching output PNP transistor l l
NPN transistor l
Switching light l l l l The light spot may not
dark l l l exceed the reflector.
LED sensor back l l l l RK 18/4 DL.45
Adjustment 12-turn (sensor back) l l l The sensor has to be
Features polarisation filter l l mounted approx. 5° angu-
lar towards the object.
l Preferably use
MTK(S) 50x50.
PRK 18/2/4 DL.4 - 02 0202
RK 18/4 DL.45 - 02
