Multi-Beam Safety Sensor for Door Systems with NO/NC Output & Quick Response

Place of Origin China
Brand Name JUTAI
Certification CE
Model Number CL20-8L
Document CL05-8L User Manual.pdf
Minimum Order Quantity 1
Price Negotiation
Packaging Details Cartoon
Delivery Time 5 - 8 working days
Payment Terms T/T,L/C,D/A,D/P,Western Union,Paypal,,MoneyGram,Alipay
Supply Ability 1000 pieces per month

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Product Details
IP Rating IP67 Function Blanking
Sensing Distance 8m Material Aluminum Alloy
Feature Corrosion Resistant Power Voltage DC12-24V
Operating Temperature -20~60℃ Operating Current <50mA
Output No/Nc, COM Working Current <20mA@DC12V-24V
Specification 2000*21*15 Mm
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NO/NC Output Safety Sensor

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Door Systems Safety Sensor

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Multi-Beam Safety Sensor

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Product Description
 


Product Description


Multi-Beam Safety Sensor for Door Systems with NO/NC Output & Quick Response 0

Multi-Beam Safety Sensor for Door Systems with NO/NC Output & Quick Response

The JUTAI CL20-8L Multi-Beam Safety Sensor is a professional protective device engineered for door systems, featuring 8-beam detection, configurable NO/NC output, and rapid response performance. It forms an invisible light grid between the emitter and receiver, instantly triggering door reversal or stopping when personnel, hands, or objects intrude—effectively preventing pinching and crushing accidents in industrial, commercial, and logistics door scenarios. With IP67 protection and aluminum alloy housing, it delivers reliable safety 保障 for fast doors, roller shutter doors, and automatic doors.

Core Specifications (Detailed Parameter Table)

Parameter Specification
Model CL20-8L
Product Type Multi-beam safety sensor (safety light curtain)
Number of Photocells 8 beams
Maximum Protection Height 1729mm
Working Voltage DC12-24V
Working Current Transmitter: <65mA @DC12V; Receiver: <20mA @DC12V
Output Configuration NO/NC relay output (default NO, configurable to NC); COM terminal included
Response Time Rapid (instant trigger for door safety actions)
Protection Rating IP67 (dustproof + waterproof)
Housing Material Aluminum alloy
Operating Range (Emitter to Receiver) 1-8m
Cable Length Transmitter: 8m; Receiver: 4m
Connector Type Transmitter: 5-pole M8 male connector; Receiver: 5-pole M8 male connector
Operating Temperature -20°C ~ +60°C
Key Function Door system anti-pinch protection + Blanking Mode (first channel non-trigger)
LED Status Indicators Transmitter: Steady blue (normal operation); Fast-flashing red (voltage <9V or >28V)

Receiver: Steady red (object/personnel blocked); Steady blue (no obstruction); Flashing blue (first power-on, emitter-receiver misalignment)
Installation Hole Dimensions (Unit: mm) 14, 29, 75, 80, 175, 19.7, 21.4, 259

Key Advantages (Clear, Targeted Points)

1. Multi-Beam Full-Coverage Detection

  • 8-beam light grid eliminates safety blind spots across the entire door opening height (1729mm), ensuring no missed detection of small objects, hands, or limbs.
  • Dense beam distribution adapts to the dynamic operation of door systems, providing all-around anti-pinch protection.

2. Configurable NO/NC Output

  • Default NO output meets standard door control system requirements; NC output is configurable via simple operation.
  • Flexible output mode switching allows seamless integration with various door control panels and safety relays, enhancing compatibility.

3. Rapid Response for Door Safety

  • Instantly triggers safety actions (door reversal/stopping) upon beam interruption, matching the fast operation of high-speed doors and roller shutters.
  • Eliminates safety lags in high-traffic door scenarios, effectively avoiding pinching accidents.

4. Rugged & Reliable Performance

  • IP67 protection withstands dust, water splashes, and temporary immersion, suitable for indoor/outdoor door installations and harsh industrial environments.
  • Aluminum alloy housing resists corrosion, mechanical wear, and vibration, ensuring long-term stability for frequent door operations.

5. Blanking Mode for False Alarm Prevention

  • Blocking the first channel of the light grid does not trigger safety responses, adapting to door gap structures and sequential beam blocking during normal closure.
  • Avoids unnecessary door interruptions while retaining full protection against unintended intrusions.

Wiring Guide (Standardized Table with Notes)

Component Wire Color Function Detailed Notes
Transmitter Red DC12-24V Positive Power Supply Connect to a stable DC power supply; avoid overvoltage/undervoltage
Transmitter Black Ground (GND) Connect to power supply negative terminal; ensure reliable grounding
Transmitter Green/Yellow/White Reserve No connection required for basic use
Receiver Red DC12-24V Positive Power Supply Same power source as transmitter for consistent voltage
Receiver Black Ground (GND) Shared ground with transmitter to ensure signal stability
Receiver Green NO/NC Output (Default NO) Connect to door control system’s safety signal input terminal
Receiver Yellow Configurable NC Activate via NC switching operation (see below)
Receiver White COM (Common Terminal) Matching terminal for NO/NC output; must be connected to door control system’s corresponding terminal

Critical Warning

  • Do NOT connect NO/NC terminals (Green/Yellow wires of receiver) to the power supply positive terminal—this will permanently damage the optical relay.

NC Output & Blanking Mode Activation Steps

  1. Complete wiring according to the Wiring Guide and confirm no connection errors.
  2. Power on the sensor (ensure power supply meets DC12-24V requirements).
  3. Within 1 minute of power-on, touch the receiver’s Green wire (NO output) to its Black wire (GND) five consecutive times.
  4. Observe the receiver’s Red light blinking rapidly—this indicates successful activation: Yellow wire switches to NC mode, and Blanking Mode is enabled.

Application Scenarios (Targeted List)

  • Industrial fast doors (manufacturing plants, logistics centers)
  • Roller shutter doors (warehouses, retail stores, commercial buildings)
  • Automatic doors (office buildings, shopping malls, industrial workshops)
  • Cold storage doors (refrigerated warehouses, freezer rooms)
  • Garage doors (residential, commercial parking facilities)

Troubleshooting (Comprehensive Problem-Solution Table)

Fault Symptoms Possible Causes Detailed Solutions
Receiver’s blue light flashes continuously after power-on Emitter and receiver are misaligned (light beams not paired) 1. Adjust the mounting positions of the emitter and receiver to ensure parallel alignment. 2. Remove any obstacles blocking the light path between the two units. 3. Tighten mounting screws to avoid vibration-induced misalignment.
Transmitter’s red light flashes fast Power supply voltage is <9V or >28V 1. Use a multimeter to test the power supply voltage. 2. Replace the power supply with a stable DC12-24V adapter. 3. Check for voltage drops caused by long cables and replace with thicker cables if necessary.
Sensor works normally (LED indicators correct), but door has no anti-pinch action Wiring error (incorrect connection of NO/NC or COM terminal) 1. Recheck wiring against the Wiring Guide—ensure Green/Yellow (output) and White (COM) terminals are connected to the door control system’s safety interface. 2. Verify that the door control system is set to “external safety sensor input” mode.
Unable to enter Blanking Mode / switch to NC output 1. Operation exceeds 1-minute window after power-on 2. Light leakage during door descent (discontinuous beam blocking) 3. Bottommost beam blocked by debris 1. Power off and restart the sensor, then complete the activation operation within 1 minute. 2. Fix door sealing to prevent external light from interfering with the light grid. 3. Clear dust, debris, or obstacles blocking the bottommost beam.

Usage & Maintenance Caveats (Key Reminders)

  • Keep connecting cables away from high-voltage/high-current conductors, door machinery, and forklift paths to avoid interference, extrusion, or damage.
  • Regularly wipe the emitter and receiver lenses with a dry, soft cloth to remove dust, oil stains, or condensation—dirty lenses will affect detection accuracy.
  • Do not bend, twist, or pull the sensor or cables forcefully; avoid scratching the aluminum alloy housing or infrared lenses.
  • Prevent direct sunlight or other infrared light sources from shining on the receiver (avoids false triggers or detection failure).
  • Ensure the door or obstruction used for Blanking Mode meets the minimum continuous blocking distance requirement.
  • Periodically test the anti-pinch function and output mode to ensure the sensor works normally with the door system.
For technical support, customization, or bulk inquiries, visit our official website: https://www.accesssecuritysolution.com/

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Customer Success Stories

1. Cold Storage Giant: Reliable Operation at -25°C
"JUTAI’s sensor eliminated downtime in our cold storage facility. The IP67 rating ensured reliable operation even at -25°C."
— Michael Chen, Warehouse Manager, Leading Cold Chain Logistics Provider
 
2. Automotive Manufacturing Leader: Seamless Integration
"The dual - mode feature allowed seamless integration into our existing infrastructure. Installation was effortless!"
— Lisa Wang, Safety Engineer, Global Automotive Manufacturer
 
3. Pharmaceutical Plant: Compliance & Efficiency
"JUTAI’s CE - certified sensor met our safety standards while reducing maintenance costs by 30%."
— David Li, Plant Director, International Pharmaceutical Corporation
 
4. E - commerce Warehouse: Accident - Free Operations
"After installing JUTAI’s 16 - beam sensor, we saw a 100% reduction in conveyor - related incidents."
— Sarah Zhang, Safety Officer, Top E - commerce Fulfillment Center
 
5. Heavy Machinery Manufacturer: Enhanced Operator Safety
"The sensor’s rapid response time (<=20ms) protected workers from robotic arm collisions during high - speed operations."
— John Wu, Engineering Manager, Industrial Equipment Producer
 
6. Food Processing Plant: Hygienic & Durable
"The IP67 aluminum housing resists water in our food processing lines while maintaining accuracy."
— Emily Chen, Quality Assurance Manager, Global Food & Beverage Company
 
7. Automated Warehouse: AGV Navigation Safety
"JUTAI’s sensor improved AGV collision avoidance, reducing downtime by 25%."
— Kevin Liu, Logistics Director, Automated Storage Solutions Provider
 
8. Fire & Safety Provider: Fire Door Compliance
"The sensor ensures fire doors close safely without compromising personnel safety during drills."
— Jason Zhou, Technical Lead, Fire Protection Systems Company





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