LN28RCP Optoelectronics

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LED group indicator LN28RPC is a kind of LED group indicator with LED source and color combination, which is mainly used in low and medium reliability field. Its shape is circular and its size is Φ28mm. Its function is to indicate that the control system realizes limits or other states at a glance. The LED group indicator has been widely used in DCS and PLC systems for signal indication, alarm indication and abnormal indication. This article mainly introduces the application field and working principle of LED group indicator LN28RPC.

The LED group indicator LN28RPC is suitable for signal indication and alarm indication in the field of low and medium reliability control systems. It can be used in analog control and discrete control, and in the field of simulation control such as DCS and PLC systems. Signal displayed by the LED indicator can be divided into general output signal and cross point signal. The purpose of the LED indicator is to indicate that the control system realizes limit or other states at a glance, and it is a very important auxiliary device in the control system.

The working principle of LED group indicator LN28RPC is mainly adapted to the working principle of LED diode. It relies on the connection of power supply and LED diode to make the diode show different colors of light. The working principle is based on the effect of voltage and current. When current is applied to the PN junction of the LED, electrons and holes are injected into the PN junction by the electric field to make the PN junction conduct, and then the light is emitted. The color of the luminous point depends on the forward voltage of the PN junction. Commonly used colors are yellow, red, green and blue.

In addition, the working principle of LED group indicator LN28RPC usually has only a single working mode when the light source is on. It turns on in sequence from bottom to top, namely ON-OFF state, which can be used to indicate the running state of the process or the execution state of the control instruction as a digital indicator. In short, the LED group indicator has been widely used in various systems as an alarm output device and indicator device.

In summary, LN28RPC can be classified as LED indication - discrete. It is a kind of LED group indicator with LED source and color combination. It is mainly used in low and medium reliability field. It is mainly used for signal indication, alarm indication and abnormal indication. Its working principle is based on the effect of voltage and current. When current is applied to the PN junction of the LED, electrons and holes are injected into the PN junction by the electric field to make the PN junction conduct and then emit light. The light source usually has only a single working mode when it is on. It is a very useful and important auxiliary device in control system.

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