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OD2-N250W150A2

SICK OD2-N250W150A2 is a compact optical distance sensor from the OD2 series, designed for precise measurement of object distance and positioning. It operates on the principle of triangulation with advanced CMOS receiver technology, providing high accuracy and repeatability even on difficult surfaces. The sensor offers a measuring range up to 250 mm, with a 150 mm reference point, ensuring reliable detection for automation, quality control, and positioning tasks.

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Technical Specifications

Measuring range: 100 mm … 400 mm (with reflectivity 6 % … 90 %)

Repeatability: ≈ 75 µm (measured on white ceramic, 90 % reflectivity, averaging mode)

Linearity: ± 750 µm

Response time: ≥ 1 ms, communication frequency ≈ 0.75 kHz

Measuring frequency: approx. 1.3 kHz

Light source: Visible red laser, wavelength 655 nm, max. output power 1 mW, Class 2 laser

Typical light spot size: approx. 1.8 mm × 3.5 mm at 250 mm

Interfaces and Control

Communication interface: RS-422 serial interface

Digital outputs: 1 × NPN output, max. load current ≤ 100 mA

Multi-function input (MF): 1 input for laser off, trigger, external teach-in, etc. (response time ≤ 3 ms)

Additional functions:

Averaging (1 … 64×)

Automatic sensitivity adjustment

Teach-in of switching output

Switch output polarity inversion

Switching modes: Distance-to-Object (DtO) or Window (Wnd)

Electrical and Display

Supply voltage: DC 12 V … 24 V

Power consumption: ≤ 2.88 W (with idle current output)

Warm-up time: ≤ 30 minutes

Status display: Distance bar graph with up to 8 LEDs

Mechanical and Environmental Characteristics

Enclosure rating: IP67 (dust-tight and waterproof)

Protection class: III (protective low voltage)

Dimensions: approx. 20.4 mm × 60 mm × 50 mm (W × H × D)

Weight: approx. 70 g

Housing material: Plastic (PBT); optical window: PMMA

Connection type: 2 m cable outlet (M12 connector versions available)

Environmental and Reliability

Operating temperature: –10 °C … +40 °C

Storage temperature: –20 °C … +60 °C

Humidity: 35 % … 95 % RH, non-condensing

Temperature drift: ± 0.08 % FS / K

Vibration resistance: 10 Hz … 55 Hz, amplitude 1.5 mm, 2 hours per axis (x, y, z)

Shock resistance: 50 g, 3 shocks per axis (x, y, z)

Ambient light immunity: ≤ 3,000 lx (artificial light); ≤ 10,000 lx (sunlight)

MTTF: 101 years, DCavg 0 %

Certifications and Classification

Conforms to EU, UK, ACMA, Moroccan directives; China RoHS compliant

Classified under ECLASS, ETIM, UNSPSC industrial standards

Summary Table
Category Specification
Measuring range 100 … 400 mm
Accuracy Repeatability 75 µm; Linearity ± 750 µm
Performance ≥ 1 ms response time, ~0.75–1.3 kHz measuring frequency
Light source Red laser, 655 nm, Class 2, 1 mW max.
Interfaces RS-422; 1 × NPN output; 1 × multi-function input
Power 12–24 V DC; ≤ 2.88 W; warm-up ≤ 30 min
Indicators LED distance bar graph (up to 8 LEDs)
Mechanics IP67 housing, 20.4 × 60 × 50 mm, 70 g
Environment –10 °C … +40 °C; high immunity to ambient light; vibration/shock resistant
Certification EU/UK/ACMA/China RoHS; MTTF up to 101 years