SICK RT-P3231 1063131 ZoneControl Photoelectric Sensor PNP 900mm

SICK RT-P3231 is a diffuse‑type photoelectric proximity sensor with background suppression (BGS). It is designed for zone control and object detection in industrial automation systems, especially on conveyors. The sensor uses an infrared LED and reliably detects a wide range of objects regardless of their colour, surface texture, or background brightness. It can be integrated directly into a conveyor system without requiring a PLC and is compatible with multiple mounting methods.

Applications:

• Object presence detection on conveyor systems

• Packaging and logistics automation lines

• Automated sorting systems

• Zone control applications (regional control and routing)

• Industrial automation for material handling and processing

Technical Specifications:

• Functional principle: Photoelectric proximity sensor, diffuse‑type, background suppression (BGS)

• Type of light: Infrared LED

• Light spot size: approx. Ø 20 mm at 500 mm

• Sensing range max.: 60 mm … 900 mm (adjustable via 9‑turn potentiometer)

• Angle of dispersion: 7°

• Supply voltage: 10 V DC … 30 V DC

• Switching output: PNP (light/dark switching selectable)

• Output current: ≤ 100 mA

• Response time: ≤ 2 ms

• Switching frequency: 250 Hz

• Connection type: M12 male connector, 4‑pin

• Circuit protection: Reverse polarity, short‑circuit, overload protection

• Enclosure rating: IP67

• Housing material: ABS plastic

• Dimensions (W × H × D): 20.6 mm × 99.2 mm × 48.9 mm

• Weight: approx. 175 g

• Ambient operating temperature: –40 °C … +60 °C

• Storage temperature: –40 °C … +75 °C

System Integration:

• This sensor belongs to the SICK ZoneControl series of photoelectric sensors.

• Requires no programming, laptop or PLC for basic setup.

• Adjustable via built‑in 9‑turn potentiometer; no external software needed.

• Compatible with three types of mounting: between rollers (R/IR), on the side frame (ZLM), or above the belt (WLR).

• M12 4‑pin male connector mates with standard industrial M12 female cables.

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information (CE, cULus, RoHS, IP67).

Related Products:

• RT‑P3227 – similar sensor, same 60‑900 mm range, PNP, Lo/Do, M12 connector

• RT‑P2221 – PNP, Lo only, M12 connector, background suppression

• RT‑P1221S10 – extended sensing range 500‑1000 mm, PNP, Lo switching, M12 connector

• RTL1‑P1221‑B21 – ZoneControl sensor with turnable background function for transparent materials