SICK W4 PHOTOELECTRIC SENSOR

SICK WLD4FP-213121A0ZZZ Photoelectric Sensor

Product Description

The SICK WLD4FP-213121A0ZZZ is a photoelectric sensor from SICK’s W4 product family, designed for reliable object detection in industrial automation and manufacturing environments. Photoelectric sensors use light to detect the presence, absence, or movement of objects without requiring physical contact. They help improve production efficiency, support automated processes, and reduce the need for manual inspection.

The W4 series is designed for applications where compact dimensions, dependable detection, and easy integration into machinery are important. Depending on the exact sensor configuration, photoelectric detection can be used to monitor products moving along conveyor systems, detect components during assembly, verify product presence at packaging stations, and support counting and positioning operations.

The WLD4FP model designation should be matched with the manufacturer's exact product datasheet before selecting the sensor for a particular application. Important selection factors include the sensing principle, operating distance, light source, output type, electrical supply, connection arrangement, and environmental protection rating.

In automated production lines, photoelectric sensors can provide switching signals to PLCs and other control systems when an object is detected. This allows machinery to trigger the next operation, count items, check product positioning, or monitor material flow. Their non-contact operating principle is especially useful when handling delicate products or when repeated mechanical contact could cause wear.

The SICK WLD4FP-213121A0ZZZ is worth evaluating for industrial detection tasks where consistent sensing and integration with automation equipment are required. For best performance, install and align the sensor according to the manufacturer's instructions, consider the target object's surface and reflectivity, and verify the required sensing distance under actual operating conditions.

Technical Data

The following specifications are based on the manufacturer's datasheet.

Parameter Specification

Manufacturer SICK

Model WLD4FP-213121A0ZZZ

Product Family W4

Part Number 1121472

Sensor Type Photoelectric retro-reflective sensor

Maximum Sensing Range 4.5 m

Recommended Sensing Range 0.035–3.9 m

Reference Reflector P250

Light Source PinPoint LED

Light Type Visible red light

Switching Output Push-pull (PNP/NPN)

Supply Voltage 10–30 V DC

Connection 3-pin M8 connector

Polarization Filter Yes

Housing Rectangular miniature housing

Switching Mode Light switching

Protection Refer to manufacturer's datasheet for exact IP rating