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Safety Light Curtain

STR Universal Safety Light Curtain

The STR series general-purpose safety light curtains adopt optical synchronous detection and feature real-time self-testing, short-circuit protection, overcurrent protection, reverse connection protection, and far-infrared anti-interference capabilities. They are suitable for safety protection, area detection, and personnel entry detection in industrial automation equipment. The products support selectable optical axis spacings of 10 mm, 20 mm, and 40 mm, with detection heights ranging from 100 mm to 3000 mm. The through-beam distance is selectable from 0 to 3 m or 0 to 20 m. They support NPN/PNP output and normally open/normally closed options, and can be directly connected to PLCs or intermediate relays. They are suitable for safety protection of stamping equipment, robotic arms, assembly lines, packaging equipment, and non-standard automated equipment.

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Key Features

  • Universal safety light curtain, suitable for various equipment safety protection scenarios. Optical synchronous detection method effectively reduces electromagnetic interference. Supports selectable optical axis spacing of 10 mm, 20 mm, and 40 mm. Detection height is customizable from 100 mm to 3000 mm. Through-beam distance is selectable from 0 to 3 m and 0 to 20 m. NPN/PNP output, normally open/normally closed selectable. Features short-circuit, overcurrent, and reverse connection protection. Real-time self-test function ensures more stable operation. Far-infrared design provides strong resistance to ambient light interference. IP65 protection rating, suitable for industrial applications. Easy wiring; can be directly connected to a PLC or intermediate relay. Supports top/bottom and side mounting.

Applications

  • Safety protection for automated equipment; safety protection for stamping equipment; protection of robotic arm work areas; safety inspection of assembly lines; personnel entry detection; material passage detection; equipment opening protection; tooling and fixture area detection; safety protection for packaging equipment; protection for non-standard automated equipment; safety protection for loading and unloading stations; safety protection for industrial production line areas.

Specifications

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STR Universal Safety Light Curtain Specifications

ItemSpecification
Detection height100 mm to 3000 mm
Number of beams6 to 200
Beam pitch10 mm / 20 mm / 40 mm
Operating range0 to 3 m or 0 to 20 m
Cross section26 × 30 mm
Infrared wavelength940 nm
Supply voltage12–24 VDC
OutputNPN / PNP; NO / NC selectable
Output current500 mA
Response time200 μs per beam
Ambient light immunity10,000 lux at an incidence angle of at least 5°
Operating temperature-10 °C to 55 °C
Humidity0 to 95% RH
Insulation resistance>100 MΩ
Protection ratingIP65
WiringOptical synchronization, relay or wired synchronization
Protection functionsShort-circuit, overcurrent and reverse-polarity protection

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