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Sensor de efecto Haldzemo NJK-5002C salón
Interruptor de proximidad del sensor de efecto salón:
Parámetros:
- Modo: NJK-5002C
- Tipo de salida: NPN NO
- Tipo de cable: 3 cables (café, azul, negro)
- Longitud del cable: 1,2 m
- Voltaje de alimentación: CC 5-30 V
- Distancia de detección: 10 mm. Diámetro: 12 mm.
- Tamaño: M12 x 1 x 40 mm. Peso: 38 g
- Forma: Cilíndrico
Indicador LED de funcionamiento:
Indicador de señal, al detectar objetos metálicos, la luz está encendida para normalmente abierta, la luz está apagada para normalmente cerrada.
Diferencia entre normalmente abierto (NO) y normalmente cerrado (NC):
Normalmente abierto (NO) es el estado habitual de la línea de salida de señal está desconectado, sin salida de señal, cuando se detecta al objeto está cerrado, la señal de salida.
Normalmente cerrado (NC) es el estado habitual de la línea de salida de señal para el estado cerrado, salida de señal continua, cuando se desconecta el sentido del objeto, cierra la señal.
Definición del interruptor salón:
Un interruptor salón es un elemento de conversión magnético a eléctrico basado en el efecto salón, que utiliza el principio de efecto salón para convertir cambios en campos magnéticos en señales eléctricas detectables.
Aplicación:
Los interruptores salón son ampliamente utilizados en control de automatización, hogar inteligente, logística inteligente y otros campos para detectar y cambiar el estado de presencia y movimiento de objetos magnéticos.
SDWA
Comentado en los Estados Unidos el 19 de noviembre de 2024
Sensor has good range, only improvement would be if body of sensor was marked with part number/type as the label on the cord seems pretty wimpy and I wouldn’t expect it to last long in a harsh environment.
dr
Comentado en los Estados Unidos el 14 de noviembre de 2024
This type of sensor has proven to be very robust in the marine environment. I am a retired professional electronics engineer and live on a 52' boat at anchor 99.99% of the time and enjoy developing micro-controller products for boaters. I use these hall sensors in a number of my projects such as measuring engine RPM, sensing precisely when transmissions are in Neutral or fully engaged either Forward or Reverse, and also the positioning of active stabilizers.I've received these four sensors and have tested each one to confirm that they meet their specifications and they do in each and every stated parameter. In fact, the description states a working voltage from 5v to 30v but they each worked reliably triggering a micro-controller (1M ohm load) on my bench from 3.9v to 32v. The only change in the operation within that range was a gradual gain of 3mm in magnetic sensitivity and a brighter LED at 32v.Please note that the manufacturer states a sensitivity distance of 10mm, but this is purely a parameter based on the strength of the magnet you are using. For example, a very small 2.7mm x 8mm magnet gave me a reliable sensing range of 8mm at 12v, but a magnet about twice the size 4.5mm x 19mm expanded that sensitivity range to 16mm at 12v. Considerably greater than the 10mm stated.I also tested these under a very significant 80 Ohm load by connecting a standard automotive 40A relay coil directly to the sensor and they will drive it all the way from 9v to 25v. At 12v the current through the sensor was 123 mA, and at 25v the sensor provided 145mA with reliable relay operation. At 26v under this 80 ohm load the sensor would capture then start oscillating and not release when the magnet was removed. However, the sensor survived the high current and recovered just fine by reducing voltage back to 25v. NOW HEAR THIS: This was a test! Do not expect a long sensor life by driving it continuously in this way. If you need to drive any type of load beyond a micro-controller, LED, or very low current relay that draws perhaps 80mA, I would highly recommend putting a drive transistor or MOSFET between the sensor and load.I believe there is a lot of misinformation on the web regarding the proper connection and use of these sensors, and the very vague schematic (photo #1) provided by the manufacturers doesn't help the situation. I have drawn several schematics (photo #2) as a general guide for driving a microcontroller or small relay/LED and driving a transistor with larger relay.all my best,dr
kevin
Comentado en los Estados Unidos el 26 de octubre de 2024
I don't know what happened, but I tried everything according to the diagram, with 5v and 12v sources and nothing.:"(blue -brown +
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