Sick
Sick WT27L-2F430 Photoelectric Proximity Sensor PNP
Detects small objects at 100 mm to 800 mm using a visible red laser with background suppression and a PNP complementary output
- Detects small objects up to 800 mm with background suppression
- Precise laser spot of Ø 2 mm at 400 mm distance
- Fast switching at 1,000 Hz with < 500 µs response time
- Rugged IP67 ABS housing operates from –10 °C to +45 °C
- PNP complementary output on M12 connector with 10–30 V DC supply
Sensing range and laser precision
The Sick WT27L-2F430 is a photoelectric proximity sensor with background suppression for detecting small objects. It uses a visible red laser operating at 650 nm with a 2 mm spot size at 400 mm distance. The sensing range spans 100 mm to 800 mm and the sensor is rated laser class 2 per EN 60825-1. Adjustment is made via a potentiometer on the housing.
Power consumption and switching performance
The unit runs on 10 V DC to 30 V DC with a ripple of 5 percent and draws 35 mA. It provides a PNP complementary output with light/dark switching and a maximum output current of 100 mA. Response time is under 500 µs and switching frequency reaches 1,000 Hz. Circuit protection covers supply voltage polarity, short circuits and inductive load switching.
Rectangular housing with M12 connector
The rectangular plastic ABS housing measures 24.6 mm by 80 mm by 53.5 mm and weighs 100 g. It achieves IP67 enclosure rating for dust and water protection. Operating temperature range is –10 °C to +45 °C and storage range extends to –10 °C to +75 °C. Connection is via a 4-pin male M12 connector and the sensor carries UL file numbers NRKH.E181493 and NRKH7.E181493.
Highlights
- Detects small objects up to 800 mm with background suppression
- Precise laser spot of Ø 2 mm at 400 mm distance
- Fast switching at 1,000 Hz with < 500 µs response time
- Rugged IP67 ABS housing operates from –10 °C to +45 °C
- PNP complementary output on M12 connector with 10–30 V DC supply
Specifications
| Brand | SICK |
|---|---|
| Model | SICK WT27L-2F430 |
Questions about this item
How do I wire the M12 4-pin connector for PNP complementary light/dark switching?
Connect pin 1 to 10-30 V DC, pin 3 to 0 V, pin 4 to the load for light switching and pin 2 for dark switching; the sensor draws 35 mA and each output handles 100 mA max.
What maintenance does the IP67 ABS housing need in a dusty workshop?
Wipe the red laser lens with a soft dry cloth when dust builds up; the IP67 seal keeps internals clean so no internal cleaning is required.
At what ambient temperature does the 1000 Hz switching frequency start to drop?
The sensor is rated for –10 °C to +45 °C operation; above 45 °C the response time and switching frequency are no longer guaranteed.
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