Nouns for photoelectric switches

Folding detection distance The detection distance of the through-beam and mirror reflection photoelectric switches refers to the maximum distance that can be stably detected without effective obstructions on the optical axis. The detection distance of the reflective photoelectric switch is the maximum distance that can stably detect the standard detection object.

Folding backlash distance The backlash distance refers to the difference between the action distance and the reset distance. It is expressed by the ratio of the detection distance, which is generally less than 20% of the detection distance. Folding response time The time required from the initial effective light reception of the light receiver to the output action is called the response time. The time required from the initial effective shading of the light receiver to the output reset is called the reset application time. Folding dark motion Dark motion (DARK ON): Shading action. It means that when the speed of light entering the light receiver is reduced to a certain degree or when it is fully shielded, the output transistor will turn on and output. Folding light movement Light ON (LIGHT ON), also known as light-receiving movement. It means that when the light beam entering the light receiver increases to a certain amount, the output transistor is turned on and there is output. Folding external synchronization input In general, all long-distance photoelectric sensors with external diagnostic input function generally have external synchronization function. That is to say, the blue line and the black line in Figure 2 can be short-circuited (ON) by means of contact or transistor conduction, etc., to stop the light emission at any time. Based on this, the sensor can be pre-checked before work to see if it is normal. In work, using this nature can also accept the operation or interruption instructions issued by the control system at any time. If the former output and the latter external synchronization input are connected in series, functions such as AND gates can be realized.