Sick
Sick VTE18-3N4440 photoelectric proximity sensor NPN
Detects objects from 5 mm to 170 mm using infrared LED with NPN dark-switching output and IP67-rated metal housing
- Reliable detection up to 170 mm with infrared LED
- Precise 2.8° beam angle for focused sensing
- Durable IP67-rated brass housing resists dust and water
- Wide 10–30 V DC supply suits many installations
- Fast 2 ms response time for quick switching
Industrial sensing
The Sick VTE18-3N4440 is a cylindrical photoelectric proximity sensor with an angled housing designed for industrial automation. It uses an infrared LED to detect objects at distances from 5 mm up to 350 mm. The NPN dark-switching output suits PLC inputs that require a sinking signal. A 4-pin M12 male connector provides a standard industrial connection.
Rugged enclosure
A nickel-plated brass metal housing with PMMA optics meets IP67 enclosure rating for dust and water resistance. Operating temperature spans –25 °C to +70 °C, matching the storage range. Power consumption is 30 mA from a 10 V DC to 30 V DC supply with 10 % ripple tolerance. Response time is 2 ms for reliable switching in fast cycles.
NPN dark-switching output
The sensor delivers an NPN sinking output that activates when the infrared beam is interrupted, a requirement for many safety and counting applications. Buyers needing a PNP sourcing output or a light-switching logic mode should select a different variant. The M12 connector pinout must match the existing cable assembly.
Highlights
- Reliable detection up to 170 mm with infrared LED
- Precise 2.8° beam angle for focused sensing
- Durable IP67-rated brass housing resists dust and water
- Wide 10–30 V DC supply suits many installations
- Fast 2 ms response time for quick switching
Specifications
| Brand | SICK |
|---|---|
| Model | SICK VTE18-3N4440 |
Questions about this item
How is the VTE18-3N4440 mounted and what wiring step is often missed?
Mount the 75 mm cylindrical brass housing with standard M18 hardware; the 4-pin M12 male connector requires a matching 4-wire cable wired to the NPN dark-switching output, not a 3-wire PNP harness.
What maintenance or replacement will this sensor need over time?
The IP67-rated PMMA optics should be cleaned periodically; the infrared LED and potentiometer are sealed inside the nickel-plated housing and are not user-serviceable, so the entire unit is replaced if output drifts beyond the 2 ms response spec.
What limit appears first during continuous operation at high temperature?
The 30 mA supply current stays constant up to the 70 °C ambient ceiling, but the 10 % ripple allowance on the 10–30 V DC rail becomes the practical constraint before thermal derating occurs.
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