SKU: SENS-2761
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StanBon STD20-28NC Light Curtain Sensor, 28 Beams, 20mm Pitch, 540mm Height, 12-24V DC

₹12,349.00 (Inclusive of all taxes)
Out of Stock

The StanBon STD20-28NC is a 28-beam infrared safety light curtain sensor with a 20mm beam pitch and a 540mm detection height, designed for 12-24V DC industrial control systems. It provides precise, non-contact object detection for safeguarding hazardous access points and automated machinery.

Features

  • 28 independent infrared beams for high-resolution detection.
  • 20mm beam pitch ensures precise detection of small objects.
  • 540mm total detection height for guarding vertical access points.
  • 12-24V DC wide-range power input for industrial compatibility.
  • Robust housing designed for demanding factory and automation environments.

Out of stock

Description

The STD20-28NC Light Curtain Sensor operates on the principle of infrared beam interruption. An array of 28 synchronized infrared LEDs and corresponding phototransistor receivers creates a protective curtain. When any single beam is broken, the sensor’s output changes state, signaling a control system (e.g., PLC or safety relay) to halt machinery or trigger an alarm. This provides a non-contact safety solution superior to physical barriers or mats.

Engineered for industrial durability, the sensor’s housing protects internal electronics from dust, vibration, and typical ambient light interference. Its 12-24V DC operating range allows direct integration with standard industrial power supplies and logic controllers, making it a reliable component for Category 2 or 3 safety circuits as per relevant standards.

Key Features

  • High-density 28-beam infrared array for precise intrusion detection.
  • Narrow 20mm beam pitch minimizes undetected gaps, enhancing safety.
  • Wide-range 12-24V DC power supply compatibility for flexible system integration.
  • Industrial-grade construction for reliable operation in harsh environments.
  • Simple mounting and alignment for straightforward installation on machinery.
  • Outputs a clean digital signal compatible with PLCs, relays, and safety controllers.

Applications

  • Machine guarding on press brakes, robotic cells, and automated assembly lines.
  • Access control and personnel safety at hazardous entry points in factories.
  • Object detection and counting in material handling and packaging automation.
  • Safety interlocking for doors, gates, and elevators in industrial settings.
  • Presence sensing for automated guided vehicles (AGVs) and palletizers.

Technical Specifications

Model NumberSTD20-28NC
Detection Height540 mm
Number of Beams28
Beam Pitch20 mm
Input Voltage12 - 24 V DC
Operating PrincipleInfrared Beam Array
Output SignalDigital (NPN/PNP or Relay dependent on configuration)
Housing MaterialIndustrial Plastic/Metal Composite
Protection RatingTypical IP54 (Dust & Splash Proof)

Frequently Asked Questions

What is the operating voltage range for the STD20-28NC light curtain?

The STD20-28NC operates on a wide-range DC input of 12 to 24 volts. This allows for direct connection to standard industrial 24V DC power supplies or lower-voltage control circuits, providing flexible integration into various automation and safety systems.

How do I wire and interface the sensor with my PLC or safety relay?

The sensor typically provides a digital output signal (often configurable as NPN sinking or PNP sourcing). You connect the power supply (12-24V DC) to the designated terminals and wire the output signal to a digital input on your PLC or the coil of a safety relay. Always refer to the specific wiring diagram for your model's configuration.

What does a 20mm beam pitch mean for detection capability?

A 20mm beam pitch means the center-to-center distance between adjacent infrared beams is 20 millimeters. This ensures that an object as small as 20mm in diameter will reliably interrupt at least one beam, providing high-resolution detection critical for safeguarding against fingers, tools, or small parts entering a hazardous zone.

Can this light curtain be used outdoors or in dirty environments?

While robustly built for industrial settings, its standard protection rating (typically IP54) makes it suitable for indoor use where it is protected from direct water jets and heavy dust ingress. For outdoor or extremely dirty environments, a higher IP-rated housing or protective enclosure is recommended to prevent false triggers from environmental contamination.

Package Includes

  • 1 x StanBon STD20-28NC Light Curtain Sensor (Transmitter/Receiver Pair)
  • Mounting hardware (brackets, screws)
  • Connection cable (length varies)

Additional Information

Weight 1.42 kg
Dimensions 72 × 10 × 9 cm