Leuze electronic Retro-Reflective Sensor

 

Model: IPRK 92/4 S.1

Part No.: 50026868 (Typical for this configuration)

---

1. General Description

 

The Leuze IPRK 92/4 S.1 is a robust, retro-reflective photoelectric sensor from the Series 92 family. It is designed for harsh industrial environments and features a polarization filter, making it highly reliable for detecting shiny or reflective objects (e.g., shrink-wrapped pallets, metal parts, mirrors) without false triggering.

This sensor uses visible red light for easy alignment and comes in a durable housing with a glass optical window, offering superior resistance to scratching and cleaning agents compared to plastic lenses.

Key Features 🎯

 

• Polarized Retro-Reflective: Reliably detects shiny objects by using a polarization filter.

• Long Range: Capable of sensing distances up to 6 meters (with standard reflector).

• Robust Construction: Features a die-cast metal housing (or robust plastic depending on exact vintage) and a glass optical window.

• PNP Output: Provides a standard PNP switching output.

• M12 Connection: Equipped with a rotatable M12 connector for flexible installation.

• Protection: Rated IP 67, suitable for wet and dusty environments.

---

2. Technical Specifications

 

Optical Data

 

Parameter	Value
Operating Principle	Retro-reflective (requires reflector)
Operating Range	0.1 … 6.0 m (with reflector TKS 100×100)
Light Source	LED, Red (Visible, pulsed)
Wavelength	660 nm
Polarization Filter	Yes (Built-in)

Electrical Data

 

Parameter	Value
Supply Voltage ($U_B$)	10 … 30 V DC (incl. residual ripple)
Output Type	PNP Transistor
Switching Function	Light/Dark switching (often selectable or wiring dependent)
Output Current ($I_e$)	Max. 200 mA
Switching Frequency	1000 Hz
Response Time	0.5 ms

Mechanical & Environmental Data

 

Parameter	Value
Housing Dimensions	Approx. 30 x 90 x 70 mm (Series 92 standard)
Housing Material	Die-cast Zinc / Aluminium (Typical)
Optics Material	Glass
Connection	M12 Connector, 4-pin (S.1 typically denotes M12)
Protection Class	IP 67
Ambient Temperature	-20 … +60 °C

---

3. Wiring (M12 4-Pin Connector)

 

The wiring follows the standard industrial code for PNP sensors.

• Pin 1 (Brown): V+ (10 … 30 V DC)

• Pin 2 (White): Dark Switching (Output active when beam is blocked) or Not Connected/Test Input depending on specific version.

• Pin 3 (Blue): GND (0 V)

• Pin 4 (Black): Light Switching (Output active when beam is not blocked – i.e., reflector seen)

Datasheet

LEUZE ELECTORONIC IPRK 92/4