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Brand: SICK
SICK WLL24-2X430 WLL24 Fiber-Optic Amplifier
Description
WLL24-2X430 is a SICK WLL24 fiber-optic amplifier (part no. 1026039) that drives and evaluates optical fibers for object detection in tight spaces. The catalogue summary lists: device type: Fiber-optic amplifier; device type detail: Stand-alone; switching output: NAMUR; connection type: Male connector M12, 4-pin; type of light: Visible red light.
How the WLL24-2X430 works and where it fits
A fiber-optic amplifier contains the light source and the receiver and connects to two light guides, so the sensing head at the machine can be tiny, heat-resistant or placed in a hazardous zone while the electronics stay in a safe location. Separating electronics from the sensing point is the main reason for using fiber optics: very small objects, tight mounting positions and high temperatures can be handled with an appropriate fiber head.
The amplifier works with fibers for proximity (diffuse) or through-beam sensing; the choice of fiber and its minimum bend radius determine range and stability. The NAMUR output type is a two-wire current interface (EN 60947-5-6) meant for isolating switch amplifiers, which is common in process plants; confirm approvals and the associated circuit in the data sheet.
Technical specifications
| Parameter | Specification |
|---|---|
| Type code | WLL24-2X430 |
| Part number | 1026039 |
| Product family | WLL24 |
| Device type | Fiber-optic amplifier |
| Device type detail | Stand-alone |
| Functional principle detail | Depending on the optical fiber cable used |
| Sensing range max. | Depending on the optical fiber cable used |
| Emitted beam: Light source | LED |
| Emitted beam: Type of light | Visible red light |
| Key LED figures: Normative reference | EN 62471:2008-09 | IEC 62471:2006, modified |
| Key LED figures: LED risk group marking | Free group |
| Key LED figures: Wave length | 660 nm |
| Key LED figures: Average service life | 100,000 h at Ta = +25 °C |
| Special applications | Explosive areas |
| MTTFD | 257 years |
| DCavg | 0 % |
| Supply voltage UB | 5 V DC … 15.5 V DC |
| Input voltage Ui max. | 15.5 V |
| Input power Pi max. | 100 mW |
| Input current Ii max. | 53 mA |
| Internal capacitance Ci max. | 80 nF |
| Internal inductance Li max. | 0 µH |
| Digital output: Number | 1 |
| Digital output: Type | NAMUR |
| Digital output: Switching mode | Light switching |
| Digital output: Circuit protection outputs | Reverse polarity protected |
| Digital output: Response time | ≤ 10 ms |
| Digital output: Switching frequency | 50 Hz |
| Housing | Rectangular |
| Dimensions (W x H x D) | 27 mm x 87.5 mm x 74.7 mm |
| Declarations and certificates in the data sheet | EU declaration of conformity; UK declaration of conformity; ACMA declaration of conformity; Moroccan declaration of conformity; China RoHS; CCC certificate; ATEX certificate; IECEx certificate; Photobiological safety (DIN EN 62471) certificate |
Ordering WLL24-2X430: type code, part number and fit
On the electrical side, the data sheet gives frequency 50 Hz; range depending on the optical fiber cable used; response time ≤ 10 ms; supply 5 V DC … 15.5 V DC.
Before choosing the mounting position, check weight: 330 g; light source: LED; operating temperature: –20 °C … +60 °C; enclosure rating: IP65 (EN 60529); wavelength: 660 nm; dimensions: 27 mm x 87.5 mm x 74.7 mm.
Adjust on the real product and background, and keep a record of the setting for service.
Typical uses are small-part detection, high-temperature or hazardous-area sensing heads and positions where a normal sensor would not fit.
Documents and quotation
Attached to this page: the SICK data sheet for WLL24-2X430, part no. 1026039, as published by SICK. To request a quotation, submit the part number with quantity and destination in the RFQ form; Seven Star LLC is an independent supplier based in Muscat. Related SICK items are listed under Sensors & Transmitters. Check wiring, mounting and approvals against the data sheet before you order, since the data sheet is the governing document.
Datasheets & Documents
- Data Sheet SICK WLL24-2X430 official data sheet (part no. 1026039) Download
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About brand
SICK is the German maker of industrial sensors: photoelectric and proximity sensors, safety laser scanners and light curtains, encoders, distance sensors, code readers and gas analysers. Erwin Sick, an optics engineer, founded it in Munich in 1946, and in 1952 it introduced its first marketable accident-prevention light curtain, which protected press operators by stopping the machine when a hand broke the light beam. The company moved to Waldkirch in the Black Forest in 1956 and is still headquartered there. It is a privately held company, and has been an Aktiengesellschaft (AG) since 1996.
SICK company profile
| Founded | 1946, Munich, Germany, by Erwin Sick (1909–1988) |
|---|---|
| Headquarters | Waldkirch, Baden-Württemberg, Germany (since 1956) |
| Ownership | Privately held; after the founder's death in 1988 his widow Gisela Sick became the main shareholder. Legal form SICK AG since 1996 |
| Size | More than 12,000 employees and group revenue of about EUR 2.3 billion (company figures for 2023) |
| First breakthrough | Accident-prevention light curtain for presses, shown in Hanover in 1952 |
| International growth | First foreign subsidiary in France in 1972, United States in 1976; today sales and service companies worldwide |
| Product families | Photoelectric, inductive, capacitive, magnetic and ultrasonic sensors; safety laser scanners, light curtains, safety controllers and relays; encoders and motor feedback systems; distance sensors and LiDAR; barcode and 2D code readers and machine vision; gas analysers, dust and flow measurement for process and emissions monitoring |
Milestones
- 1946: Erwin Sick receives a licence to run his engineering firm in Munich.
- 1952: The first marketable accident-prevention light curtain is presented in Hanover and goes into series production.
- 1956: The company moves to Waldkirch with 25 employees.
- 1972 and 1976: Subsidiaries are founded in France and the United States.
- 1996: SICK becomes an Aktiengesellschaft.
- Today: Sensors for factory and logistics automation, machine safety and process analysis, with a large share of revenue outside Germany.
Choosing a SICK sensor
For object detection, the sensing principle comes first. A retro-reflective sensor (WL series) sends light to a reflector and switches when an object breaks the beam; it is reliable over long distances and easy to align. A sensor with background suppression (WTB series) detects an object at a set distance and ignores what is behind it, which suits conveyors with shiny or dark backgrounds. A through-beam pair (WS/WE) gives the longest range and the highest reliability in dust. For transparent bottles and film, use a model built for transparent objects (for example WL12G-3B or WL150-P420). The digits in the code also matter: "P" usually means a PNP output and "N" NPN, and the last digits set the connector or cable. For machine guarding, a safety laser scanner such as nanoScan3 or microScan3 protects an area, while a safety controller such as Flexi Soft combines several safety devices.
Where SICK products are used
In Oman and the GCC, SICK sensors are used in packaging and bottling lines, food and beverage plants, logistics and airport baggage handling, cement and steel plants, ports and cranes, automated warehouses, and on machines built by European OEMs. SICK safety scanners guard robots and automated guided vehicles, and its encoders give position feedback on motors, hoists and conveyors.
SICK products we list
| Family | Examples |
|---|---|
| Photoelectric sensors | WL12-3P2431, WTB12-3P2431, GTB6-P4211, VL18-4P3240, WL12G-3B2531, WS/WE100, KT5W contrast, W26 IO-Link |
| Proximity, cylinder and ultrasonic sensors | IME12-08NPSZC0S, IME18-05BPSZC0S, MZT8, UM18 4-20 mA, UM30, UFN3 fork |
| Machine safety | nanoScan3, microScan3, S300 Professional, Flexi Soft FX3-CPU1, FX3-XTIO, ReLy OSSD |
| Encoders and motor feedback | DFS60B, AFM60 PROFINET, AFS60 SSI, ATM60 PROFIBUS, SRS50, EFS50 |
| Distance sensors and code readers | DT50, DL50, DT35, Lector632 |
Ordering SICK products: what we need
Send the type code and the 7-digit SICK part number from the label (for example WTB12-3P2431 together with its part number). For a replacement sensor, add the output (PNP or NPN), connection (M8, M12 or cable) and sensing distance. For encoders, add the interface (incremental, SSI, PROFIBUS, PROFINET), resolution and shaft type. For safety scanners, tell us the model and whether the existing configuration needs to be kept.
Facts checked against SICK's published company history and annual figures, October 2026.
Browse SICK products by category: Sensors & Transmitters.
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Frequently Asked Questions
What is the SICK WLL24-2X430?
It is a SICK fiber-optic amplifier (WLL24), part no. 1026039. The catalogue summary reads: Device type: Fiber-optic amplifier; Device type detail: Stand-alone; Switching output: NAMUR; Connection type: Male connector M12, 4-pin.
What supply does the WLL24-2X430 need?
Supply voltage is 5 V DC ... 15.5 V DC. Check the output and interface rows in the table for the signal levels.
What protection rating and temperature range are given?
Enclosure rating: IP65 (EN 60529). Ambient operating temperature: –20 °C ... +60 °C. Confirm both against the site before ordering.
Does the page include the data sheet?
Yes. The official SICK data sheet for part no. 1026039 is attached as a PDF and linked on this page; where it differs from the page text, the data sheet applies.
What should be confirmed before ordering the WLL24-2X430?
Compare the full type code and part number 1026039 with the device being replaced, check supply, output or interface and mounting, and send the details through the RFQ form. Seven Star LLC is an independent supplier, not a SICK partner.
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