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  • 24

    2026/08

    What should be the "slot width" for the slot-type photoelectric device? —— How are 5mm, 15mm, and 30mm used respectively?

    The slot-type photoelectric sensor (also known as U-shaped photoelectric switch) integrates the emitter and the receiver on both sides of the concave groove of the same housing. When the measured object passes through the groove and blocks the light path, it triggers the signal. Compared with the split-type beam-shooting photoelectric sensor, it has a compact structure and strong anti-interference ability. The width of the groove between the emitter and the receiver directly determines the maximum size of the object that can pass through.

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  • 21

    2026/08

    How to select the resolution of the optical curtain? - The relationship between the accuracy of object size and the spacing of the light beam

    The main difference between a measuring light curtain (or measuring grating) and a regular safety light curtain lies in the fact that the former outputs a "presence/absence" switch signal, while the latter outputs specific dimension values - how wide, how high, and what the diameter is of the object. Therefore, the selection of resolution directly determines whether the measurement results can be used.

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  • 19

    2026/08

    Which production stations in car manufacturing cannot do without sensors? —— A comprehensive analysis of the four major processes: stamping, welding, painting, and assembly

    Automobile manufacturing is an extremely complex system engineering project, typically divided into four major processes: stamping, welding, painting, and assembly. Sensors, as the "sensing organs" of

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  • 17

    2026/08

    How is the laser displacement sensor used in the lithium battery industry? - Three major applications: sheet thickness, roll diameter, and positioning.

    The production process of lithium batteries involves a total of over fifty steps. The core processes mainly include raw material grinding, coating, rolling, winding, assembly, testing, and packaging. In this precise production chain, laser displacement sensors, with their advantages of non-contact measurement, high-speed sampling, and high-precision output, have become indispensable measuring tools for key links such as sheet thickness detection, separator roll diameter monitoring, and cell assembly positioning.

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  • 07

    2026/08

    What is the "blanking" function of the safety interlock? What are the differences between fixed blanking and floating blanking?

    In many scenarios of industrial automation, safety light curtains face a contradiction: on the one hand, they need to protect the safety of operators; on the other hand, the workpieces, pallets or materials themselves must enter the area covered by the light curtain. If the light curtain stops the operation as soon as it is blocked, the production line cannot function normally.

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  • 05

    2026/08

    What to do when multiple sets of photoelectric devices are conflicting? Learn to "time-shift" and "isolate"

    On automated production lines, the scenario of multiple groups of photoelectric sensors being densely installed is becoming increasingly common. However, many on-site observations reveal that the more sensors are installed, the more malfunctions occur - when there is no object passing through, the equipment frequently stops; or when an object has already passed, the sensor does not respond. This is not because the sensors are broken, but because they are "clashing" with each other.

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  • 03

    2026/08

    What is the "optical fiber bending radius" of the optical fiber sensor? What will happen if the bending is too sharp?

    Optical fiber sensors are widely used in industrial inspections. One of their core advantages is that the optical fibers themselves are flexible and can be bent, allowing for flexible wiring in narrow

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  • 27

    2026/07

    What are the limitations of "long cable wiring" for photoelectric sensors? - The dual challenges of voltage drop and interference.

    In industrial settings, the installation locations of control cabinets and sensors are often quite far apart, and long cable wiring is a common requirement. However, many people overlook a crucial issue when extending the cables: cables are not infinitely extendable. When the cable length exceeds a certain limit, both voltage drop and electromagnetic interference will occur simultaneously, causing the sensor signal to become unstable or even completely fail.

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  • 24

    2026/07

    Can the "lens" of the photoelectric sensor still be used if it has been scratched? - The impact of the scratch on the detection.

    The lens of the photoelectric sensor serves as the "window" through which light enters and exits the sensor. Its condition directly determines the detection performance of the sensor. However, in industrial settings, lens scratches are quite common - during installation, caused by tools, improper cleaning methods, and equipment vibration resulting in friction with the workpiece can all leave scratches on the lens surface. So, can a scratched lens still be used? The answer is: it depends. Minor surface marks may not affect its use, but deep scratches must be replaced.

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  • 22

    2026/07

    What should I do if the "key" for the security door lock is lost? —— The replacement process for the actuator of the coded door lock

    In industrial safety protection, coded safety door locks (such as RFID-coded locks or magnetic-coded locks) prevent tampering and bypassing by assigning a "unique identity" to each actuator. However,

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  • 20

    2026/07

    The safety grating is installed on the vibrating equipment. How can we prevent the optical axis from shaking out of alignment?

    On equipment such as presses, presses, forging machines, and large bending machines, the installation of safety grilles faces a particular challenge - vibration. The continuous vibration during the operation of the equipment will be transmitted to the grilles through the supports, causing the optical axis between the transmitter and the receiver to gradually shift. Once the optical axis is off, it can result in frequent false alarms that cause the equipment to stop unexpectedly, or worse, the equipment fails to stop when it should, making the safety protection ineffective.

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  • 17

    2026/07

    How should the cables of the safety barrier be routed? - The signal lines and power lines must be routed separately through the wiring trough.

    After the safety grating was installed, the indicator light was normal and the optical axis was aligned properly. However, during the operation of the equipment, false alarms or signal loss occurred f

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