E3F-DS30B2

[Product Name]: Photoelectric switch

[Specification and model]: E3F-DS30B2

【Dimensions】: 18mm (mm)

[Detection method]: diffuse reflection type

[Detection distance]: 30cm (cm)

【Working Voltage】:D C 6-36V

[Output form]: NPN three-wire normally closed

Electrical connection diagram

Electrical connection diagram

Photoelectric switch (photoelectric sensor) is the abbreviation of photoelectric proximity switch, which uses the shielding or reflection of the light beam by the tested object to select the circuit by the synchronous loop to detect the presence or absence of the object. Objects are not limited to metals, all objects that reflect light can be detected. The photoelectric switch converts the input current into an optical signal on the transmitter, and the receiver detects the target object according to the strength or presence of the received light. The photoelectric switch smoke alarm is commonly used in security systems to record the number of movements of the robotic arm in industry.

Main types of photoelectric switches:

Opposite type photoelectric switch

　　It consists of a transmitter and a receiver, which are structurally separated from each other, and a switching signal change is generated when the beam is interrupted.

　　Characteristics: Distinguish opaque reflective objects; The effective distance is large because the beam only crosses the induction distance once; It is not easily disturbed, and can be reliably and suitable for use in the field or dusty environment. The consumption of the device is high, and cables must be laid on both units.

Diffuse reflection photoelectric switch

It is when the switch emits the beam, the target produces diffuse reflection, and the transmitter and receiver form a single standard component, whenElectric switchWhen enough combined light is returned to the receiver, the switch state changes. Characteristics: The effective action distance is determined by the reflection ability of the target, and is determined by the surface properties and color of the target; Smaller assembly expenses, when the switch is composed of individual components, coarse positioning can usually be achieved; The measurement distance is adjusted by background suppression function. Sensitive to dust on the target and sensitive to the changed reflection properties of the target.

Mirror reflection photoelectric switch

      The case of the transmitter and receiver is a standard configuration, the beam emitted from the transmitter is reflected in the opposite mirror, that is, it returns to the receiver, and when the beam is interrupted, a change in the switching signal is generated. The passage time of light is twice as long as the signal duration. Characteristics: Distinguish opaque objects; With the help of mirror parts, a high effective distance range is formed; It is not easily disturbed and can be reliably and suitable for use in the field or dusty environment.