Optimize production with the SICK 6037820 (WFM30-40P311) fork sensor. Features a 30mm width, 4kHz switching frequency, and PNP output for rapid, precise detection.

SKU SICK-6037820 Category SICK WFM

Product Description

Product Overview

Part Number: 6037820
Model: WFM30-40P311
Sensor Type: Fork sensor (Photoelectric)
Fork Width: 30 mm
Fork Depth: 42 mm
Light Source: Visible red light (LED)
Output Type: PNP (Light switching)
Connection: M8 male connector, 3-pin
Housing Material: Rugged aluminum (IP67 rated)

Product Description

The SICK 6037820 (WFM30-40P311) is a high-performance fork sensor designed for rapid and reliable object detection in industrial automation. Part of the WFM series, this “plug-and-play” sensor eliminates the need for complex alignment between sender and receiver, as both components are integrated into a single stable aluminum housing. With a fixed 30 mm fork width and a 42 mm depth, it is engineered for precision, capable of detecting objects as small as 0.8 mm.

The sensor utilizes a bright red LED light source, making alignment intuitive and straightforward. Its high switching frequency of 4,000 Hz ensures it can keep pace with high-speed production lines, providing consistent response times of less than 125 µs. Built to withstand harsh environments, the unit features an IP67 enclosure rating and provides all-round visibility of the yellow receive indicator. This ensures that operators can monitor switching behavior from any angle, maximizing process safety and reducing downtime. The WFM30-40P311 is the ideal solution for users seeking a durable, maintenance-free sensor that requires zero manual adjustment for standard detection tasks.

Key Performance Features

High-Speed Detection: A 4 kHz switching frequency allows for precise detection in fast-moving manufacturing processes.
Plug-and-Play Setup: No adjustment or calibration is required; the sensor is ready for immediate operation upon mounting.
360° Visibility: The yellow output status indicator is visible from all sides, ensuring easy monitoring of the switching state.
Robust Design: Housed in a stable, die-cast aluminum frame with an IP67 rating for protection against dust and water.
Precision Sensing: Minimum detectable object (MDO) of 0.8 mm, ideal for small parts and label gaps.
Optical Consistency: Integrated sender and receiver design guarantees permanent optical alignment.

Ideal Applications

Part Detection: Counting and presence monitoring of metal or opaque parts on conveyor belts.
Packaging Industry: Detecting the presence of labels or identifying gaps between packaging units.
Production Processes: Monitoring small components in electronics assembly or automotive sub-assembly lines.
Intralogistics: High-speed triggering and positioning in automated sorting systems.
Quality Control: Checking for the correct placement of tabs, caps, or small mechanical features on products.

Features

Functional principle	Optical detection principle
Dimensions (W x H x D)	10 mm x 50 mm x 59.5 mm
Housing design (light emission)	Fork shaped
Fork width	30 mm
Fork depth	42 mm
Minimum detectable object (MDO)	0.8 mm
Light source	LED, visible red light
Adjustment	None

Mechanics/electronics

Supply voltage	10 V DC … 30 V DC ¹⁾
Ripple	< 10 % ²⁾
Current consumption	< 20 mA ³⁾
Switching frequency	4 kHz ⁴⁾
Response time	125 µs ⁵⁾
Stability of response time	± 15 µs
Switching output	PNP
Switching output (voltage)	PNP: HIGH = V_S – ≤ 1.5 V / LOW = 0 V NPN: HIGH = approx. V_S / LOW ≤ 1.5 V
Switching mode	Light switching
Output current I_max.	100 mA
Initialization time	140 ms
Connection type	Connector M8, 3-pin
Protection class	III ⁶⁾
Circuit protection	U_V connections, reverse polarity protected Output Q short-circuit protected Interference pulse suppression
Enclosure rating	IP67
Weight	Approx. 80 g … 190 g ⁷⁾
Housing material	Metal, Aluminum

¹⁾ Limit values, reverse-polarity protected, operation in short-circuit protected network: max. 8 A.
²⁾ May not exceed or fall below U_v tolerances.
³⁾ Without load.
⁴⁾ With light/dark ratio 1:1.
⁵⁾ Signal transit time with resistive load.
⁶⁾ Reference voltage DC 50 V.
⁷⁾ Depending on fork width.