Wenglor P2KH002 Reflex Sensor Background Suppression

Wenglor P2KH002 Reflex Sensor Background Suppression works with red light according to the angle measurement principle and is suitable for the detection of objects against any background.

Wenglor P2KH002 Reflex Sensor Background Suppression works with red light according to the angle measurement principle and is suitable for the detection of objects against any background. The sensor always has the same switching distance, regardless of the color, shape, and surface of the objects. Minimal height differences can be detected with the sensors and, for example, various parts can be reliably differentiated from each other. The IO-Link interface can be used to configure the reflex sensors (PNP/NPN, NC/NO, switching distance), as well as to output switching statuses and distance values. The robust V4A (1.4404/316L) stainless steel housing is resistant to oils and coolants, as well as a cleaning agent.

Optical Data

  • Range: 150 mm
  • Setting Range: 30 … 150 mm
  • Switching Hysteresis:  < 10 %
  • Light Source: Red Light
  • Service Life (T = +25 °C): 100,000 h
  • Max. Ambient Light: 10,000 Lux


  • Condition monitoring
  • Low switching distance deviation for black/white
  • Reliably detect objects against any background
  • Robust stainless steel housing with IP69K


Detection of Cookies with Reflex Sensors with Background Suppression

In the production of cookies, the objects must be transported and gripped between different processes on multi-lane conveyor belts. After baking in the oven, they are individually conveyed on rails and prepared for the packaging process. They must be counted before gripping and moving. For this purpose, a reflex sensor with background suppression is installed above each lane on the conveyor line, which detects the cookies from the front edge. Thanks to the stainless steel 316L housing, the sensors are ideal for hygienically demanding cleaning at high temperatures.

Reflex Sensors With Background Suppression

Reflex sensors with background suppression detect and measure objects contactlessly and detect them in front of any defined background. They work with red light, infrared light, blue light or laser light. Thanks to the principle of angle measurement, the color, shape and object surface have no influence on the switching behavior of the sensors.


Optical Data

Range 150 mm
Setting Range 30 … 150 mm
Switching Hysteresis  < 10 %
Light Source Red Light
Service Life (T = +25 °C) 100,000 h
Max. Ambient Light 10,000 Lux
Light Spot Diameter see Table 1

Electrical Data

Supply Voltage 10 … 30 V DC
Supply Voltage with IO-Link 18 … 30 V DC
Current Consumption (Ub = 24 V) < 20 mA
Switching Frequency 1,000 Hz
Switching Frequency (interference-free mode) 500 Hz
Response Time 0.5 ms
Response time (interference-free mode) 1 ms
Temperature Drift < 5 %
Temperature Range -40 … 60 °C
Switching Output Voltage Drop < 2 V
Switching Output/Switching Current 100 mA
Residual Current Switching Output < 50 µA
Short Circuit and Overload Protection yes
Reverse Polarity Protection yes
Lockable yes
Interface IO-Link V1.1
Protection Class III

Mechanical Data

Setting Method Potentiometer
Housing Material Stainless steel 316L
Degree of Protection IP68/IP69K
Connection M8 × 1; 4-pin
Optic Cover PMMA
Ecolab yes

Safety-relevant Data

MTTFd (EN ISO 13849-1) 1,699.11 a


PNP NO/NC antivalent yes
IO-Link yes

Table 1

Detection Range 50 mm 100 mm 150 mm
Light Spot Diameter 5 mm 7 mm 10 mm


Datasheet : Wenglor P2KH002 Reflex Sensor with Background Suppression

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