Factory direct supply inductive proximity switch LJ18A3-8-J/EZ | AC two-wire normally open

Factory direct supply inductive proximity switch LJ18A3-8-J/EZ | AC two-wire normally open

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10 CNY (1.46USD)
20+
9 CNY (1.31USD)
50+
8.5 CNY (1.24USD)

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Product parameters:

  • Brand: Shanghai open
  • Model: LJ18A3-8-J/EZ
  • Type: inductive proximity switch
  • Frequency response: 0.5KHZ
  • Rated voltage: 90-250
  • Rated current: 300MA
  • Detection range: 8
  • Customized processing: Yes
  • 3 c rated voltage: 440V


"Model": LJ18A3-8-J/EZ

"Name": inductive proximity switch

"Shape": 18 mm diameter cylinder

"Detection distance": 8 mm (mm)

"Test object": metal/iron

"Voltage": AC AC90-250V

"Output mode": the second normally open

"Current": 300 MA (mA)

"Shell materials": metal/copper

"Function": the LJ series proximity switch (also known as the non-contact limit switch) is the role of action in close to the metal, widely used in machine tools and other equipment for control purposes.

Working principle:

Proximity switch consists of three main components: oscillators, switch circuits, amplifier output circuit. Oscillator producing an alternating magnetic field. When a metal object close to the magnetic field, and the sensing distance is reached, eddy currents in the metal, resulting in vibration attenuation, and oscillation. Oscillator, oscillator and oscillator stage amplifier circuit after changes are processed and converted into a switching signal, triggering control devices, so as to achieve non-contact detection purposes. Target off sensor nearer, nearer the target from the sensor, the larger the damping in a coil; damping larger smaller the sensor oscillator current. current loss of inductive proximity switch, as metal distance decreases.

Wiring instructions


Normally open (NO) and normally closed (NC), the difference between:
Normally open (NO) is a common condition signal output wire for the disconnected state, no output signal is only closed when the sensed object, the output signal.
Normally closed (NC) is a common condition signal output line closed, continuous signal output, only disconnected when the sensing object, turn off signal.
Two types of proximity switches according to the actual needs.


Three-wire connection method:
Color cast is the positive pole of the power supply, blue is the negative pole of the power supply, black is the load (output signal). For details, please read the wiring diagram on the baby.

Two connection methods of line (DC or AC):
Brown line cathode connected load, load the positive line and then connect the power of the cathode, anode of direct connection blue power supply.

Specific methods please refer to the wiring diagram on the switch plate to wiring, do not reverse wrong!


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