Photoelectric switch is the abbreviation of photoelectric proximity switch, which uses the detection object to block or reflect the beam, and the circuit is turned on by the synchronous loop, and then the presence or absence of the object is detected. Objects are not limited to metal, and all objects that reflect (or block light) can be detected. The photoelectric switch converts the input current into an optical signal on the transmitter, and the receiver then explores the target object according to the intensity or presence of the received light. The common photoelectric switch smoke alarm in the security system is often used in the industry to count the number of movements of the robotic arm.
Photoelectric switch, also known as photoelectric sensor, is based on the use of the detected object to block or emit the beam, and then determine whether there is an object, and convert the change of light at the emitting end and the receiving end into current to achieve the detection intention.
How to use photoelectric switches
1. The photoelectric switch is self-conditioned, and before the photoelectric switch is used, the switch itself and its appearance will be tested to see if there is any damage or inconsistency.
2. When the photoelectric switch is used to avoid the obstruction, the spacing between the objects will be large for the goods with color and color, and the bright object will be exposed to intense sunlight, because the reflection is weak or the light is disturbed, the photoelectric switch will not play a role.
3. When the photoelectric switch detects an object other than the time, it can be adjusted through the counterclockwise conditioning button until it is adjusted to the time and division position that can sense the object. At the time of operation, one point that needs to be paid attention to is to stop the live operation of the photoelectric switch to prevent the occurrence of risks.
Process/Methodology:
1. Self-conditioning. At the beginning of the use of the winding machine photoelectric switch, please check whether the switch itself is defective, whether the appearance is defective, etc.
2. When avoiding obstructions, the EL130 photoelectric switch is used for some goods such as colored goods. Less reflective goods. Items with large gaps between small items. Bright goods or in the sunlight or halogen environment, the photoelectric switch will not work, that is because the light is dry.
3. When the trough photoelectric switch with a slot width of 6mm on the ITR8402-A groove on the code disc cannot sense the goods, the direction of the photoelectric switch can be appropriately corrected to make it shoot directly into the center of the goods; If it does not work, you can open the photoelectric switch housing to adjust the sensing interval, adjust the sensitivity knob in the clockwise direction, and rotate it in the clockwise direction until it reaches the reliable sensing stop.
4. Direction conditioning, when the photoelectric switch senses the goods or outside the motor turntable, the counterclockwise adjustment sensitivity knob can rotate in the counterclockwise direction until it reaches the point where the foreign object can not be detected. Stay safe.
Precautions for the use of photoelectric switches
1. When the photoelectric switch is used, in order to ensure the role of the application, it is necessary to ensure the cleanliness of the application occasion.
2. It is forbidden to use it in environments with strong acids and alkalis and on occasions with strong chemical corrosion to prevent risks.
3. Try to prevent it from being used outdoors or in direct sunlight.
4. It is best not to use it in bad weather or in places where the temperature environment changes greatly, and some areas that are prone to impact and oscillation also need to be avoided in time.
5. In the environment of operation and application, the photoelectric switch should be prevented as much as possible from splashing water and oil.
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