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20mm Beam Spacing Safety Light Curtain - Industrial Infrared Safety Sensor (4-Wire DC)

20mm Beam Spacing Safety Light Curtain - Industrial Infrared Safety Sensor (4-Wire DC)

SKU:CUCIR-04T20

Output Type
Number of Beams
Regular price $158.00
Regular price Sale price $158.00
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● Optical axis spacing 20mm
● Number of beams 4~16
● Signal output NPN/PNP
● Reverse connection/output short circuit protection

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Overview

The CUCIR Standard Safety Light Curtain Series delivers exceptional sensitivity and robust anti-interference performance for modern automatedworkshops.
Engineered for hazardous machinery like punching machines, hydraulic presses, and CNC equipment, this series features an ultra-fast response time of <10ms, ambient light resistance up to 10,000 Lux, and an IP65 waterproof and dustproof rating. Built-in reverse polarity and output short-circuit protections ensure long-lasting electrical reliability.
Featuring a precise 20mm beam pitch (optimized for hand protection), the CUCIR series offers scalable configurations from 4 to 16 light axes to perfectly fit your specific machine height requirements.

Feature

Rugged & Heavy-Duty Housing
Built to withstand harsh workshop environments, CUCIR light curtains feature a sturdy aluminum alloy housing. This robust casing effectively protects the internal optics from accidental workpiece impacts, tool collisions, or physical stepping during maintenance.


Advanced Cable-Sync Anti-Interference Technology
Equipped with a dedicated physical synchronization cable (CP signal loop), our sensors eliminate the vulnerabilities of wireless optical systems. By establishing a direct hardwired handshake between the transmitter and receiver, CUCIR line-sync light curtains provide an ironclad shield against heavy industrial disturbances. They deliver 100% flawless uptime even when operating directly alongside intense welding arcs, robotic plasma cutters, high-frequency electromagnetic fields, and flashing strobe lights.

Fail-Safe CPU Self-Testing
Safety is non-negotiable. The integrated smart CPU continuously runs background diagnostic scans. In the rare event of an internal malfunction, the system instantly executes a fail-safe shutdown, ensuring no erroneous running signals are sent to your machinery. This prevents critical synchronization loss, cable faults, or driver circuit errors.

TECHNICAL SPECIFICATIONS

Cross-section Dimensions
30*30mm
Optical Axis Spacing
20mm
Number of Beams
4~16
Protection Height
Optical axis spacing * (Number of beams - 1)
Protection Width (Distance)
0.3-3m
Power Supply Voltage
DC24V±10%
Power
3~8W
Response Time
≤10ms
Insulation Resistance
≥100MΩ
Signal Output
NPN/PNP
Operating Temperature
-10℃~+55℃
Storage Temperature
-40℃~+70℃
Operating Humidity
35%RH~85%RH
Light Interference Resistance
1000Lux
Synchronization Type
Cable Synchronization
Protection Class
IP65
Circuit Protection
Reverse connection protection/Output short circuit protection

Dimension (unit: mm)

Dimension Drawing

Detail

Dimension Drawing

Product FAQ

Can CUCIR light curtains be used on heavy-duty punching or stamping machines? Will high-frequency vibrations cause malfunctions? +
While many compact light curtains on the market are only meant for light assembly lines, CUCIR sensors are explicitly engineered to handle the brutal, high-frequency shocks of metal stamping and punching machines.

Our secret lies in the internal structural reinforcement: the entire circuit board is solid-potted with specialized industrial anti-vibration epoxy gel. Furthermore, each order comes equipped with our heavy-duty shock-absorbing steel brackets. These brackets utilize industrial-grade damping components to neutralize up to 90% of mechanical impact, preventing false trips and extending the sensor's lifespan in the harshest workshop environments.
Does it offer enough physical protection and safety redundancy compared to bulky traditional light curtains? +
Don't let the sleek, space-saving design fool you. CUCIR utilizes a high-density, aviation-grade aluminum alloy housing that delivers superior structural rigidity without the unnecessary bulk. This allows you to install it easily in tight CNC enclosures or small machine openings.In terms of safety logic, we make zero compromises. Every CUCIR safety light curtain is powered by a fail-safe CPU self-testing architecture. It operates on a strict dual-channel output design. If any cable issue, light desynchronization, or internal error occurs, the system instantly executes a safe-shutdown signal to your PLC. It offers the exact same heavy-duty safety redundancy as bulkier industrial models, just packaged in a smarter, more versatile form factor.
I'm retrofitting an older machine and I'm not a professional automation engineer. Is it easy to install? What if I buy the wrong wiring logic? +
We design our products with DIY users, small workshops, and maintenance technicians in mind. Every CUCIR kit comes with a crystal-clear, English-labeled wiring diagram and intuitive dimension guides (with standard Arial engineering graphics) so you can get it running in minutes.

To minimize compatibility errors, our sensors feature a Universal NO/NC (Normally Open / Normally Closed) dual-output system, allowing you to match your machine's safety circuit seamlessly.