LJ8A3-1-Z-BY LJ8A3-1-Z/BY

LJ8A3-1-Z-BY LJ8A3-1-Z/BY

Model:  LJ8A3-1-Z/BY， Embedded, flat head

Product Name: Inductive Proximity Switch

Appearance: 8mm diameter cylindrical body

Detection distance: 1 millimeter (mm)

Object Detection: Metal/Iron

Working voltage: DC 6-36VDC or below

Output Method: DC PNP three wire normally open

Output current: 300 milliampere (mA)

Shell material: metal/copper

working principle:

A proximity switch consists of three main parts: an oscillator, a switch circuit, and an amplifier output circuit. The oscillator generates an alternating magnetic field. When the metal target approaches this magnetic field and reaches the induction distance, eddy currents are generated inside the metal target, causing oscillation attenuation and even stopping. The changes in oscillator oscillation and stop oscillation are processed by the post amplification circuit and converted into switch signals, triggering the driving control device to achieve non-contact detection. The closer the target is to the sensor, the closer the target is to the sensor, and the greater the damping inside the coil; The greater the damping, the smaller the current of the sensor oscillator The current loss of inductive proximity switches decreases as the distance from the metal target decreases.

The difference between normally open (NO) and normally closed (NC):

1、 Normally open (NO) means that the signal output line is in a disconnected state and there is no signal output in the normal state

When an object is sensed, it closes and outputs a signal.

2、 Normally closed (NC) refers to the signal output line being in a closed state during normal operation, with continuous signal output, and only disconnecting and closing the signal when an object is sensed.