Installation & Usage

A:Typical application scenarios of multi-sided access protection light grids (such as DADISICK's QSA series) include:1. Robot operation area protectionBuild closed safety areas on multiple open sides of the robot workstation to prevent people from entering the danger zone by mistake.2. Automated assembly line perimeter protectionDeploy light curtains around the equipment to prevent operators from entering the machine danger zone from any direction.3. Logistics sorting system entrance/exit monitoringDetect materials or personnel entering from different directions, trigger safety response or count operation status.4. Three-dimensional warehouse or stacker area protectionEstablish multi-sided access protection light grids in high-frequency dynamic operation areas to improve safety levels and prevent misoperation.5. Periphery of heavy equipment such as injection molding machines and stamping machinesMulti-sided access protection light grids provide more comprehensive protection, replacing traditional mechanical fences for easy maintenance and operation.This type of light curtain is particularly suitable for industrial automation scenarios that need to save space, increase protection coverage and reduce wiring complexity.

A:Normally, safety light curtains cannot effectively detect transparent objects for the following reasons:Reason explanation:Safety light curtains mostly use the infrared emission and reception principle. Transparent objects (such as glass and transparent plastic) have a high transmittance to infrared light, and the light beam will not be effectively blocked. Therefore, the receiver can still receive the signal, resulting in the inability to determine whether an object has passed.

A:Safety light curtains are often used in the following areas that require personnel protection:1. Hazardous areas of mechanical equipmentSuch as the feed port or operation area of ​​equipment with moving parts such as punching machines, shearing machines, injection molding machines, bending machines, etc.2. Both sides of the conveyor belt of the automated production linePrevent personnel from accidentally entering the dangerous area when the conveyor belt is running.3. Robot operation areaEnsure the safety of personnel and robots when collaborating or maintaining.4. Assembly and handling system boundariesRestrict access to high-speed moving parts areas.5. Lifting platform, automatic storage equipment entranceDetect personnel entering high-risk spaces and perform interlocking control.6. At the entrance of dangerous doors/channelsUsed to prevent personnel from entering restricted areas without authorization.The installation location should be determined based on the risk assessment results, combined with the equipment operation mode and personnel operating habits.

A：Generally, it is not recommended to cut or fold the safety mat by yourself for the following reasons:· Cutting will damage the internal sensing circuit, affect the detection function of the mat, and cause safety failure;· Folding may cause damage or breakage of the internal structure, causing false alarms or missed detections;· Safety mats usually have preset sizes and sensing areas, which have been certified and will no longer meet the original safety standards after modification.If a customized size is really required, it is recommended to contact the manufacturer for factory customization or professional modification to ensure that the function and safety performance meet the requirements.Contact Technical Support directly for help 

A:The installation distance and response time of the proximity switch should be determined according to the following factors:✅ Installation distance (detection distance)· Material of the object to be detected: Metal materials (such as iron and steel) are best for inductive proximity switches; non-metallic objects require capacitive proximity switches.· Switch type:-Shielded type: Installed flush with the metal surface, the detection distance is shorter.-Unshielded type: Installed protruding from the metal surface, the detection distance is longer.· Environmental interference: Avoid magnetic field interference sources during installation, and ensure that there are no other metal objects too close around.· Actual distance recommendation: Usually the actual installation distance is 70%-80% of the rated detection distance to ensure long-term stability.✅ Response time· Determined by application requirements: High-speed applications (such as speed detection and counting) require models with a response time in the range of 0.1~2 ms.· Product specification confirmation: Different models have different response times, and the manufacturer's technical parameters must be consulted when selecting.📝 Summary: Reasonable installation distance and fast response time should be considered in combination with application requirements, target materials and environmental conditions to ensure stable and reliable operation of the switch.

A：Methods for proximity switches to avoid metal interference and mutual interference include:1. Reasonable arrangement of installation location: Ensure that the proximity switch is kept at a sufficient distance from the surrounding metal to prevent metal from affecting its magnetic field.2. Use shielded proximity switches: Shielded proximity switches have stronger anti-interference capabilities and are suitable for metal-intensive environments.3. Maintain appropriate spacing: When multiple proximity switches are installed side by side, the minimum spacing should be maintained according to the instructions to prevent overlapping sensing areas from causing mutual interference.4. Use models with different frequencies: Some models support multi-frequency design, which can reduce the possibility of mutual interference.5. Use filter circuits or anti-interference modules: Improve the overall anti-interference performance of the system.

The installation steps of the safety touch edge are briefly as follows:1. Confirm the installation location: select the edge that needs to be protected, such as automatic doors, lifting platforms, robotic arms, etc.2. Fix the bracket or rail: fix the touch edge on the surface of the equipment or in the matching aluminum profile groove to ensure that the installation is straight and firm.3. Avoid excessive bending: avoid sharp angles or too small bending radius on the touch edge during installation to avoid affecting the performance of internal switching components.4. Reserve activity margin: a certain margin should be left during installation to avoid pulling and breaking the wire during movement.5. Wiring connection: according to the cable type of the touch edge, connect it correctly to the safety controller or safety relay system.6. Test function: after installation, perform a pressure test to ensure that the touch edge is sensitive and can correctly trigger the shutdown or alarm function.It is recommended to read the product manual or technical information carefully before installation to ensure compatibility and correct operation.🙌Free PDF DownloadDownload our free technical guide on safety edges (PDF file)  🔊More InformationSafety Edges｜DADISICK

A：When choosing the right type and size of safety edge, the following key factors should be considered:1. Application scenario: Select the appropriate edge model according to the type and movement of the installed equipment (such as automatic doors, lifting platforms, AGVs, etc.).2. Edge length: Select the appropriate edge length according to the size of the actual protection area to ensure that all potential hazardous areas are covered.3. Trigger sensitivity: Select the required trigger pressure and response sensitivity to meet the safety requirements of the specific application.4. Installation method: Confirm whether the selected edge is easy to install on the device (such as embedded, surface mounting, etc.) and compatible with the original control system.5. Environmental factors: Consider the environment where the edge will be used, such as whether there is dust, moisture, oil, high temperature or low temperature, and select products with corresponding protection levels (such as IP65 and above).6. Interface compatibility: Ensure that the edge matches the electrical interface of the safety system such as safety controllers and relays for easy integration.If you are unsure, it is recommended to contact the manufacturer or technical support to provide equipment parameters and usage environment for professional recommendations. 

Safety Edge is often used to detect contact between objects or people and moving parts to prevent squeezing, collision or pinching accidents. It is suitable for a variety of industrial and automation environments. The following are the main application scenarios:1. Automatic doors and rolling shutter doors: installed on the edge of the door body, when a person or object is squeezed to the edge, the door will stop or rebound immediately to prevent pinching.2. Lifting platform and elevator door: detect obstacles during the platform descent or closing process to ensure personnel safety.3. Industrial robots and robotic arms: used at the edge of the robot's range of motion, detect abnormal contact and stop movement immediately.4. Conveyor lines and sorting systems: trigger emergency stop when items are piled up or people mistakenly enter the conveyor belt area.5. AGV/AMR carts: installed at the bottom or peripheral edges to prevent collisions with people or obstacles.6. Packaging and processing machinery: prevent mechanical moving parts from causing harm to operators during operation.In short, safety edges are important components for achieving dynamic protection and avoiding contact injuries.

A：Safety mats can be integrated with other safety devices in the following ways to achieve more efficient linkage safety protection:1.In conjunction with safety relays: Connect the safety mat to the safety relay. When a person is detected stepping on it, the relay immediately cuts off the power supply of the dangerous equipment.2.Linked with safety light curtains: Used in conjunction with light curtains, the ground and high-altitude areas are monitored separately to form all-round three-dimensional protection.3.Integrated into PLC or safety controller system: The output signal is connected to the PLC or safety module to achieve logic control, shutdown, alarm and other functions.4.In conjunction with safety door locks: When a person does not leave the carpet, the safety door lock remains locked to prevent accidental entry or mis-start of the equipment.5.Drive peripheral devices such as sound and light alarms: Stepping on the carpet can trigger sound and light alarms, improving on-site response efficiency.Through standard interfaces (such as dry contact output) and unified protocols, safety mats can be easily integrated into existing safety systems.

A：Safety relays can be used as central control modules to integrate multiple safety input devices (such as emergency stop buttons and safety light curtains) into a safety loop. The connection method is as follows:1. Emergency stop button connection:Connect the normally closed contact of the button to the input of the safety relay. When the button is pressed, the contact is disconnected, the relay detects the circuit break, immediately cuts off the output, and shuts down the relevant equipment.2. Safety light curtain connection:The safety output signal of the light curtain controller (usually PNP or relay normally open contact) is connected to another input channel of the safety relay. When the light curtain is blocked, the output signal is interrupted and the safety relay responds.3. Output control:The safety relay will close the output loop and allow the equipment to run only when all input signals are normal. If any input triggers a fault, the output is disconnected.4. Feedback loop (monitoring normally closed contacts):It is recommended to add a feedback loop to monitor whether the contactor is reliably released to ensure the redundancy and reliability of the entire safety system.Through this connection method, the safety relay realizes unified monitoring and control of multiple safety devices and improves the overall system safety level.

A：Safety relays are suitable for all kinds of industrial application scenarios that have high requirements for personnel safety and need to realize emergency control and safety monitoring of equipment. The following are some typical application scenarios:✅ 1. Emergency stop system (E-Stop)· Realize the immediate power off and shutdown of equipment or production line in an emergency.· Commonly used in mechanical processing, packaging, conveyor lines, etc.✅ 2. Safety light curtain/grating system·  Monitor the dangerous area and quickly cut off the power of the equipment once the intrusion of personnel is detected.· Suitable for punching machines, robot work areas, etc.✅ 3. Safety door lock/safety door switch· Detect whether the safety door is closed. Only when the door is closed and locked can the equipment run.· Applied to closed equipment such as injection molding machines, CNC machine tools, presses, etc.✅ 4. Two-hand control button· Requires the operator to press the button with both hands at the same time to avoid the danger caused by one-handed misoperation.· Commonly used in high-risk operation equipment such as shearing machines and punching machines.✅ 5. Safety carpet, safety edge· Once a person steps on the safety carpet or touches the edge, the relay is triggered to cut off the output.· Mostly used for area protection such as automated assembly lines and logistics sorting systems.✅ 6. Robots and automation equipment· Monitor and control the safety status of industrial robots, AGVs, collaborative robotic arms, etc.· Can be used in conjunction with PLC or safety controller.✅ 7. Centralized safety management of multiple devices· The signals of multiple safety devices are unified into one safety relay to achieve centralized control and fault feedback.

A：Safety relays implement redundancy and feedback circuits in the following ways to ensure that the system remains safe in the event of a fault:✅ Redundant design:· Dual-channel input: Two independent input circuits are used (such as the two contacts of the emergency stop button), and the output will only be output when the two conditions are met at the same time;· Dual relay output: Two or more relay contacts (K1, K2) are set inside to independently control the same actuator;· Fault detection: If any channel fails, the system immediately cuts off the output and remains in a safe state to prevent single-point failure.✅ Feedback circuit (Reset Loop):· Monitoring the status of the actuator: The safety relay requires a feedback loop to detect whether the contacts of the external actuator (such as a contactor) are truly disconnected;· Preventing failure bypass: If the actuator contacts are stuck, the feedback circuit will prevent the system from resetting to avoid incorrect restarts;· Automatic or manual reset: The safety relay decides whether to allow reset based on the feedback status to ensure that the system has restored safety before each startup.🔒 Summary:Redundancy ensures that "one fault is not fatal"; the feedback circuit ensures that the system will not be reset by mistake in a fault state, thereby greatly improving the safety level of the machine and complying with international safety standards such as ISO 13849 or IEC 62061.

A:Ultrasonic sensors measure distance by emitting and receiving sound waves, but for irregular or inclined surfaces, the echo signal may be weakened or the reflection may deviate. To improve measurement accuracy, the following methods are usually used:1. Choose a suitable installation angle: Aim the sensor at the possible reflection direction of the target to avoid signal deviation caused by too large an angle.2. Use wide beam or multi-sensor configuration: Improve coverage and echo capture rate.3. Use intelligent filtering and signal processing algorithms: Enhance the ability to suppress clutter and identify true echoes.4. Set appropriate detection thresholds and delay times: Avoid false triggering or missed detection.By optimizing installation and settings, ultrasonic sensors can more reliably measure the distance of objects on irregular or inclined surfaces.