Lightweight Electronic Proximity Switch , Inductive Prox Sensor CE Certified
Working Principle
The electronic proximity switch contains high-frequency oscillation circuit, detection circuit, amplifier circuit, the solution circuit and the output circuit. When the power is supplied to the switch, the oscillator in the high frequency oscillation circuit generates an alternating electromagnetic field on the detection surface of the switch. When there is a metal close to the switch detection surface, the eddy current inside the metal absorbs the energy of the alternating electromagnetic field in the oscillator. The oscillator is weakened or stopped. Oscillator energy changes in the two states, the detection circuit is converted to a level signal, through the amplifier circuit to amplify the level signal after the trigger circuit to trigger the output transistor transistor circuit to produce a switch signal. Thereby detecting the presence or absence of the metal. To achieve the purpose of metal detection.
Parameter
| Lag distance |
Less than 10% of the detection distance |
| Detecting objects |
Magnetic metal (detection distance is reduced when non-magnetic metal) |
| voltage |
DC : DC 12~24 (6~36V) pulse (p-p) below 10% |
| AC : AC 110~220V (36~250V) 50/60Hz |
| Current consumption |
N.P : ≤13mA |
| D : ≤0.8mA |
| A : ≤1.7mA |
| Control output |
N.P : ≤300mA |
| D : ≤200mA |
| A : ≤400mA |
| Loop protection |
N.P.D : reverse connection protection, surge absorption, load short circuit protection |
| A : surge absorption |
| Ambient temperature |
-30~+65°C (no icing, no condensation) |
| Ambient humidity |
-35~95%RH |
| Insulation resistance |
50MΩ or more (DC500 megohmmeter) (between charging part and housing) |
| Withstand voltage |
AC 1000V 50/60HZ 1min (between charging part and Housing) |
| Temperature effect |
-30~+65°C: detection distance error ±15% at +23°C |
| -25~+60°C: detection distance error ±10% at +23°C |
| Voltage effect |
6-36V (90-250V) : ±15% of detection distance error |
| 10-30V (220V) : ±10% of detection distance error |
| Protection level |
IP67 (IEC) |
| Material |
Housing: ABS |
| Detection surface: ABS |
Note:Please read the "Precautions" of the product manual before use.
Details
Two-wire
NPN/PNP
Normally closed
DC
About maintenance and overhaul
In order to keep the proximity sensor to work stably for longtime, the following regular examinations should be performed just like general control
1. Check the installation position of detected object and proximity sensor if any deviation,loosening or deformation exists.
2. Check the attached wires and connecting parts if any loosening,bad contact or wire breaking off exists.
3. Check if there is any metallic powder accumulation or not.
4. Check if the temperature condition and surrounding environment condition are normal or not.
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