Many of us have noticed the variety of colored lights that are on panels and electrical panels, these types of lights are signal lights.
LED indicator light, LED signal lamp,
LED indicator lamp
they say
Signal lights are a type of LED lamps that are usually used in industrial environments and process control to provide the status of electrical circuits and machines for operators, technicians, production managers and factory personnel.
These lights are specifically used to monitor the operation of the circuit, announce or display changes that occur in the electrical circuit, and also show whether the circuit is connected or disconnected, for example, when the equipment or a part of the electrical system is out of order. A red LED lamp can be used to warn the operator, so there are two key words for the signal light
1- Monitoring the operation of the circuit
2- On or off status
Note: In the electric circuit map, the signal light is marked with the following symbol.
Signal light colors
Different colors of the signal lights show different functions and each of these colors has a special meaning depending on the standard set for that system. In general, 5 different colors are used to show different statuses of the device or processes. are: red, yellow, green, blue and white
Standard colors
Application of signal light
Signal lights are widely used in the following cases: ships, machine tools, machinery, PLC panels, switch boards, power distribution boards, power boards, telecommunication boards, etc.
The internal building of the signal light
A signal light consists of the following components
1_ COVER
2_ LED light
(LED LIGHT)
3_ BODY
4_ SCREWS
5_ Plastic washer (RUBBER RING)
6_nut (fastener)
7_ Cover to prevent dirt from entering (DUST COVER)
Types of signal lights
Signal lights are usually classified from two points of view: 1_ The diameter of the signal light 2_ The voltage of the signal light
Types of signal lights in terms of diameter
Mainly, to install the signal lights on the board and other equipment, a hole or a hole should be created with a suitable tool, so it is very important to know the diameter of the mounting hole. Signal lights are produced and used in different diameters, but they are common. The most of them
16 mm
and
22mm
That is the signal light
22mm
is more common
Types of signal lights in terms of voltage
Signal lights are available in different voltages in the form of AC and DC, usually these voltages vary from 6V to 380V, and their common voltages are usually
24V
48V
110V
and
220V
Note: There are other types of signal lights, which are called BUZZER signal lights or buzzers. These types of signal lights have audio alarms in addition to optical alarms, and in cases where the operator may not be informed only by .the optical warning. These types of light signals are used for warning
