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CL20-8L8 Infrared Safety Light Curtain Sensor with Blanking Function for Industrial Doors
Product Introduction
The JUTAI safety light curtain CL20-8L8 establishes a protective shield by generating a beam of light between the emitter and the receiver. When an object or person enters the grid area, the light beam is interrupted, instantly triggering the safety system to take appropriate actions. It is commonly installed at critical points of devices such as doors, automatic doors, lifting equipment, and more, to promptly detect potential crushing risks. Widely utilized in industrial and commercial settings, it is an essential component of automation systems, particularly in situations demanding high safety standards.
Operating Modes
Blanking Mode
The safety light curtain is installed within the door gap
When the door closes normally, the light beams are sequentially blocked from top to bottom
This sequential blocking is recognized by the system as a normal door closing action
When the door is closing and an object obstructs the light beam, it causes the door to open immediately
Normal Mode
Installed on the inside and outside of the door
Light beams do not pass through when the door is closed
Regardless of which light beam is blocked, the system immediately outputs the door opening signal
Key Features
Comprises an emitter and a receiver
Operating range of 1-8 meters
Maximum protection height: 1820mm in both concealing and normal modes
Shell material: aluminum alloy
Product Advantages
Suitable for cold storage doors and humid environments (-25°C temperature range)
Does not require synchronous wire control box
Fast response speed: 0.03 seconds
Resistant to sunlight and electromagnetic interference
Supports customization (quantity)
Technical Parameters
Parameter
Receiver
Transmitter
Working Current
<20mA@DC12V
<65mA@DC12V
Working Voltage
DC12-24V
DC12-24V
Operating Range
1-8m
1-8m
Maximum Protection Height
1820mm (Both modes)
1820mm (Both modes)
Output
NO/NC, COM
-
LED Status
Red (Object blocked), Blue (Unblocked), Blue flashing (Alignment needed)
Blue constant (Normal), Red flashing fast (Voltage issue)
Number of Photocells
8
8
Operating Temperature
-20°C ~ +60°C
-20°C ~ +60°C
Protection Level
IP67
IP67
Shell Material
Aluminum alloy
Aluminum alloy
Connection Diagram
Wire Color
Receiver
Transmitter
Red
DC12V-24V
DC12V-24V
Green
Connect to GND
-
Yellow
NO/NC (Default NO)
-
White
COM
-
Black
GND
GND
Within one minute of powering on, the green wire touches the receiver's GND five times (Red light blinks), and the yellow wire will turn into NC.
Troubleshooting Guide
Fault Symptoms
Solutions
Slow Flashing Lights After Power On
The emitter and receiver are not aligned; readjust the alignment
Red Light Flashing Fast (Transmitter End)
Voltage at transmitter end is below 9V or above 28V
Light Curtain Normal, But Door Has No Anti-pinch Action
Wiring error
Unable To Enter Concealment Mode
1. Light leakage during door descent 2. Bottommost beam blocked 3. Minimum distance for continuous blocking not met
Installation and Usage Precautions
Keep connecting cables away from high voltage or high current conductors
Ensure lower door or obstructive object meets minimum distance for continuous blocking
Wipe emitter and receiver windows with dry, soft cloth to prevent dirt accumulation
Do not bend or twist the light curtain
Avoid direct exposure of sunlight or other infrared light sources to the receiver
Avoid scratching the surface of the infrared lenses
Product Images
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2012
Total Annual:
120000-150000
Employee Number:
50~70
Ecer Certification：
Verified Supplier
Shenzhen Jutai COMM Co., Ltd. is a high-tech privately-owned enterprise that integrates production, research and development, and sales. Our company is dedicated to the research and development as well as system integration of security products, achieving an intelligent one unified platform that int... Shenzhen Jutai COMM Co., Ltd. is a high-tech privately-owned enterprise that integrates production, research and development, and sales. Our company is dedicated to the research and development as well as system integration of security products, achieving an intelligent one unified platform that int...
