Safety Light Curtain Product Selection Guide

Safety Light Curtain Product Selection Guide

Summary

When purchasing a safety light curtain product, you need to consider multiple factors, including the degree of danger, the object to be protected, the working environment, key parameters, brand and model selection, and installation and maintenance. By carefully evaluating and comparing the features and performance of different products, you can choose the safety light curtain product that best suits your needs.

Safety Light Curtain Product Selection Guide

Understand the Usage Environment

Before selecting a safety light curtain, it's essential to understand the site environment and the equipment used, including water mist, dust, oil, high temperatures, strong light, and outdoor conditions. Also consider the equipment used, such as punch presses, testing equipment, automated equipment such as shearing machines, bending machines, hydraulic presses, injection molding machines, area protection systems, and stamping robots. The appropriate light curtain can then be selected based on the specific environment and application.
Safety Light Curtains Are Used to Protect Personnel from Mechanical Equipment

Determine the Resolution

Choose the resolution based on the smallest object to be detected or the required detection precision.
Finger protection
Finger protection
Detection capability
10mm
diameter
Hand protection
Hand protection
Detection capability
20/30/40mm
diameter
Arm/body protection
Arm/body protection
Detection capability
80/200mm
diameter
Note: The distance to the hazard is determined by the minimum detection size and response time of the selected safety light curtain. 20/30/40mm is most commonly used, but for closer proximity to the hazard, please use 10mm. For further proximity to the hazard, the 80/200mm can also be used.

Select Detection Range(Height of protected area)

Detection range of safety light curtain
Detection range = (Number of beams - 1) * Optical axis spacing

Select Detection Distance

Safety Light Curtains
Through-beam distance: refers to the distance from the transmitter to the receiver of the safety light curtain. The required through-beam distance is determined based on the hazardous area of ​​the equipment (the area that needs protection on site).

Select Output Method

NPN output wiring diagram for safety light curtain
An NPN output sinks current from the load. When the sensor activates, it pulls the output signal down to ground (0V).

PNP output wiring diagram for safety light curtain
A PNP output source current to the load. This means that when the sensor is activated, it provides a positive voltage (+V) to the output line.

Select Installation Method

Choose the appropriate installation method based on the site environment.
Installation method of T-shaped screws on the back(Original accessories)
Installation method of T-shaped screws on the back(Original accessories)

Installation method of side right angle bracket(Original accessories)
Installation method of the side right-angle bracket(Original accessories)

Installation method of convex nut(Optional accessories)
Installation method of convex nut(Optional accessories)

Installation method of right angle bracketsat both ends(Order separately)
Installation method of right angle bracketsat both ends(Order separately)

Shockproof installation method of right-angle brackets at both ends(Order separately)
Shockproof installation method of right-angle brackets at both ends(Order separately)

Stainless steel bracket installation(Order separately)
Stainless steel bracket installation(Order separately)

Safety Precautions

· This safety light curtain can only be installed, inspected, and maintained by qualified personnel. Qualified personnel are those who have received professional training and certification, or those with extensive knowledge, training, and experience proven to be capable of resolving such issues.
· Before using the safety light curtain, carefully read this instruction manual to understand the necessary installation, operation, inspection, and maintenance procedures and requirements. 
· The OSSD must meet the following conditions: It must not be short-circuited to the power supply; its rated value must not be exceeded.
· The light curtain must not be dropped or subjected to impact.
· Users should establish and effectively implement safe operating procedures.

WARNING: 
· Do not plug or unplug the light curtain cable while the power is connected.
· After the light curtain is debugged, it is strictly forbidden for anyone other than designated personnel to change its installation location.
· Ensure that the light curtain mounting device is in a safe state relative to the machine and maintain this state.
· Ensure that the output of the safety light curtain does not affect the machine during electrical installation.

DADISICK's Hot Selling Safety Light Curtains

QT40-20-780-2BB|Security Light Curtain|DADISICK
Beam spacing:20mm Number of optical axes: 40 Protection height: 780mm Safety sensors for machines output (OSSD):2 PNP
QBT10-102-1010-2BA|Safety Light Barrier|DADISICK
Beam spacing: 10mm Number of optical axes: 102 Protection height: 1010mm Safety curtain outputs (OSSD): 2 PNP
QRF20-40-760-2BB|Safety Light Screen|DADISICK
Beam spacing:40mm Number of optical axes: 20 Protection height: 760mm Safety Curtain outputs (OSSD):2 PNP
QO54-40-2120-2BB|Light Grid Guarding|DADISICK
Beam spacing:40mm Number of optical axes: 54 Protection height: 2120mm Safety Curtain outputs (OSSD):2 PNP