Sick
SICK KT8L-P3756 Contrast Sensor PNP 150 mm 17 kHz
Contrast sensor with 150 mm sensing distance, 17 kHz switching frequency and PNP output in IP67 zinc housing
- Precise contrast detection at 150 mm sensing distance
- Fast 17 kHz switching frequency for high-speed lines
- Teach-in button enables quick static or dynamic setup
- IP67 zinc diecast housing withstands harsh environments
- PNP output with 30 µs response time ensures reliable switching
SICK KT8L-P3756 Contrast Sensor
The SICK KT8L-P3756 is a rectangular contrast sensor designed for precise mark detection in industrial automation. It operates on a 10 V DC to 30 V DC supply voltage with a PNP switching output and an analog output of 0.3 mA to 20 mA. A red laser light source at 655 nm provides a 3 mm light spot at a 150 mm sensing distance. The housing is zinc diecast with an IP67 enclosure rating.
Suited for high-speed print inspection
This sensor suits production lines requiring a 17 kHz switching frequency and 30 µs response time for fast registration mark detection. The teach-in button supports static 2-point and dynamic min/max adjustment with automatic drift correction. Buyers needing a different sensing range or NPN output logic should look at alternative models. The 30 mm to 600 mm operating distance covers many but not all placement scenarios.
M12 connector and teach-in simplify setup
A 5-pin male M12 connector provides standard industrial connectivity without requiring special cabling. The teach-in input accepts PNP logic with a 25 ms retention time in non-volatile memory. An adjustable 20 ms time delay helps filter signal bounce. Circuit protection includes reverse polarity and short-circuit safeguards for the output.
Highlights
- Precise contrast detection at 150 mm sensing distance
- Fast 17 kHz switching frequency for high-speed lines
- Teach-in button enables quick static or dynamic setup
- IP67 zinc diecast housing withstands harsh environments
- PNP output with 30 µs response time ensures reliable switching
Specifications
| Brand | SICK |
|---|---|
| Model | SICK KT8L-P3756 |
Questions about this item
What supply voltage must my system provide for the SICK KT8L-P3756 to operate?
The sensor requires a DC supply between 10 V and 30 V with ripple below 5 Vpp and draws less than 80 mA.
Can I connect this sensor to a legacy PLC input that only accepts NPN signals?
No, the KT8L-P3756 provides a PNP switching output and a 0.3–20 mA analog output; it is not compatible with NPN-only inputs.
After wiring and teaching the sensor, how do I verify it is detecting contrast correctly at 150 mm?
With the teach-in complete, the output switches at 17 kHz with 30 µs response; monitor the PNP signal or analog current while presenting the target at the 150 mm sensing distance.
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