WENGLOR LM89PA2 Retro-Reflex Photoelectric Sensor

Overview

WENGLOR LM89PA2 is a universal polarized retro-reflex photoelectric sensor. WENGLOR LM89PA2 uses red LED light source with polarization filter, works with RQ100BA reflector to detect objects passing between sensor and reflector. This WENGLOR LM89PA2 is widely stocked as spare photoelectric switch for material handling and machine automation assemblies.

Features

WENGLOR LM89PA2 is equipped with polarization filter, effectively suppresses false triggering from shiny and reflective workpiece surfaces. The sensing distance can be adjusted via built-in potentiometer for flexible on-site setup. LM89PA2 provides single PNP switching output, supports short circuit protection, reverse polarity protection and overload protection. It adopts fully encapsulated PBT plastic housing, IP67 protection grade, suitable for dusty and splash industrial environments. It has M12 4-pin connector for quick plug connection and replacement. This sensor has 1kHz switching frequency and 500µs response time for fast object detection. It is CE compliant, designed for 24/7 continuous operation on conveyor lines, packaging machines, automated doors and material transfer equipment. This model is discontinued by manufacturer but still available as spare part.

Specifications

WENGLOR LM89PA2 Retro-Reflex Sensor Brand: WENGLOR Model: LM89PA2 Type: polarized retro-reflex photoelectric sensor Light source: red LED Max sensing range: 6500 mm, matched with RQ100BA reflector Supply voltage: 10 ~ 30 VDC Output: PNP, max 200 mA Switching frequency: 1 kHz Response time: 500 µs Adjustment: potentiometer for sensing distance Protection: short circuit, reverse polarity, overload Housing material: PBT, full encapsulation Connection: M12 × 1, 4-pin Protection class: IP67 Ambient temperature: -10 ℃ ~ +60 ℃ Weight: 28 g Status: discontinued, spare part stock

Principle

WENGLOR LM89PA2 emits polarized red light to the reflector. This Retro-Reflex Photoelectric Sensor receives reflected light signal under normal condition and keeps output state. When an object blocks the light path, the sensor loses return signal and switches PNP output. The polarization filter eliminates interference from reflection on glossy workpiece surfaces.

Applications

WENGLOR LM89PA2 is deployed in conveyor presence detection, packaging machine product counting, automatic gate safety detection and logistics transfer line object sensing. WENGLOR LM89PA2 is stocked as spare retro-reflex photoelectric sensor for industrial automation assemblies.